Corrections | Best Spray Foam

What triggers a change

A maker publishes, revises or withdraws a data sheet, safety data sheet, test report or registration we cite.
A marketplace listing changes its pack size, price, seller or title in a way that affects a record. We already show both readings when a pack size moved between two dates.
A reader, maker or seller shows us a document we did not have, or a reading error we made.
A code edition, standard or rule we cite is superseded.

What we do

We change the record, update the read date on the affected page, and, where the change reverses something we said, add a note saying what was said before and why it changed. We do not silently rewrite a finding.

What we have corrected

Every reversal this site has published, newest first. A price refresh or a new document arriving is not a correction; a sentence that was not true is.

2026-10-28 · Stanley F990P SuperCoat: exact Amazon package

We said: The 24-pack record linked its Amazon button to B0FJ2PSSLX, an 18-can kit, while the featured-variant row still carried an older 24-can ASIN that no longer represented the package shown.

We say now: The 24-pack record links to B0DQPRKCFF, the current 24-can foam-only package, and states that the gun is not included. The dated Amazon rating is tied to that exact ASIN; Amazon shares the rating pool across the variation family.

The available Amazon package changed, but the editorial identity and variant records were not reconciled together.
2026-10-28 · Kraken Bond Gaps & Cracks: window and door frame use

We said: The record said the Amazon title’s window and door wording conflicted with the maker’s data sheet because the foam is described as high expansion.

We say now: The data sheet itself says both "High expansion rate" and "Fixing and insulating window and door frames." The record now shows both statements and the separate low-expansion Window & Door Pro product without calling the marketplace title a contradiction.

The first reading captured the expansion table and missed the frame application in the same sheet.
2026-10-28 · Froth-Pak 200 and 630: shelf life, vapor permeance and nozzle pause

We said: The records stated a 24-month shelf life with no source, omitted the published vapor-permeance pair and reduced every nozzle pause to 30 seconds.

We say now: The unsupported shelf-life duration is removed. DuPont’s Product Information Sheet prints 5.4 perm at 1 in and 3.1 perm at 2 in under ASTM E96. The operating manual gives 50 seconds at 70 to 75 F, 35 seconds at 80 F and 30 seconds at 85 F before a nozzle is replaced.

The record carried a shelf-life figure not printed in the documents and read only the hottest-temperature row of the nozzle table.
2026-10-28 · Sprayman Gaps & Cracks, TYTAN Fill All and Akfix 800C: package and yield rows

We said: The Sprayman record presented the listing’s 12 oz as if the sheet agreed, the TYTAN record printed only one of two differently worded half-inch bead yields, and the Akfix cleaner record called the package 12.3 fl oz.

We say now: Sprayman is shown as 12 oz on the store and listings but 13.5 oz on its undated sheet. TYTAN is shown with both 502 ft for a "1/2 in width bead" and 1,463 ft for a "1/2 in bead," with the unresolved difference stated. Akfix 800C is shown as 500 mL, case of 12, as its sheet prints.

Listing labels were allowed to stand in for two document rows, and one adjacent TYTAN yield row was omitted.
2026-10-28 · Stanley F993 and Akfix 895: the pesticide records and safety-sheet census

We said: The product records said no active ingredient was named without recording that both safety data sheets list 1,4-dichlorobenzene at 0.5 to 5 percent, and the safety table omitted Stanley F993.

We say now: Both product records state the 1,4-dichlorobenzene range and the exact limit of the evidence: neither safety data sheet identifies it as the pesticide active ingredient. Stanley F993 is now a row in the safety table with the classifications its sheet prints.

The composition rows were missed when the pesticide claims were read, and F993 was not carried into the cross-product safety table.
2026-10-28 · Gun-cleaner and nozzle guide: how many sheets and which maker sets the one-week routine

We said: The page counted three cleaner sheets, omitted Sprayman from the cured-foam answer and attributed the more-than-one-week cleaning routine to Kraken Bond.

We say now: The page counts all four cleaner sheets. Stanley, Akfix and Sprayman set the more-than-one-week routine; Kraken Bond does not. The Froth-Pak nozzle timing follows its temperature table rather than a single 30-second figure.

The Sprayman cleaner sheet was present in the product records but omitted from the page summary, and its routine was assigned to the wrong brand.
2026-10-13 · Black foam, and whether spray foam is waterproof: what the black foams say about sunlight

We said: Every black foam maker that publishes a sheet tells you to protect the cured foam from sunlight, and the black foams still recommend a coating.

We say now: All but one do. DAP’s sheet for Touch ’n Seal Black Foam says it will not break down or discolor in sunlight, says it can be painted, and asks for no cover.

The sentence was written from the sheets that do ask for a cover; DAP’s sheet was in the records and was not read for this point until October 13.
2026-10-13 · How to spray foam insulation, and the cure-time table: what the FastCoat and ThermCoat documents say about layers, distance and mist

We said: The FastCoat and ThermCoat documents gave no wait between layers and no shake time, ThermCoat was held about 16 inches from a wall and gave no ceiling distance, FastCoat was held 12 to 16 inches under a ceiling, and every kit built 2 inches as two layers. The safety data sheets of FastCoat and SuperCoat were summed up as a flammable aerosol that is harmful if inhaled.

We say now: Both manuals give about 30 minutes between 1-inch layers, a 20 to 30 second shake, 12 to 18 inches from a wall, 6 to 8 under a ceiling and a mist of water before and between layers; one picture on the FastCoat sheet shows 12 to 16 inches. The FastCoat and ThermCoat data sheets ask for at least three layers to reach 2 inches. Both safety data sheets also class the foam as a respiratory and skin sensitizer and as suspected of causing cancer.

Both manuals are images without a text layer, so a text search of the documents missed them, and the 16 inches was the distance the ThermCoat sheet gives for its yield, not for spraying; the documents were read again by eye on October 13.
2026-09-18 · Kraken Bond Gaps & Cracks: the price of one 24 oz can

We said: One 24 oz can at $149.99, $6.25 an ounce, with the 2-pack at $29.99 and the 12-pack at $149.99 withheld as unreliable.

We say now: The single can’s price is withheld and the 2-pack at $29.99 and the 12-pack at $149.99 are printed. The same change printed two correct case prices that had been withheld: Sprayman Pest Blocker at $94.99 for 12 cans and Sprayman Black Foam at $249.99 for 48.

The single-can listing was carrying the 12-pack’s price, which the record already said, and the rule that withholds contradicting prices always withheld the bigger pack; it now withholds whichever of the two is out of line with the rest of the product’s prices.
2026-09-13 · The rubric: what sells now counts for more, what is in the box counts for less

We said: Buyer feedback capped at 15 against 30 for documentation, with three of those fifteen points for how much a kit is selling. Equipment and material in the box were worth 14.

We say now: Buyer feedback is capped at 20, and eight of those points are for Amazon’s bought-in-past-month estimate rather than three. What is in the box is worth 9. Documentation is untouched at 30 and is now one and a half times the feedback block rather than twice it.

Two findings pointed the same way. The box block was not earning its weight: eleven of the thirteen kits scored full marks on it, so it separated almost nothing. And the selling figure is the one number in this category a brand cannot write for itself. A star average can be bought, imported from another platform or left to age, as the verified counts on these stores show plainly; a count of Amazon’s bought-in-past-month estimate cannot. It was being scored below paperwork that costs a brand nothing to produce. The change moves BEEST FullStop above TYTAN Thermospray, fifth against sixth, which is the visible consequence and the reason this entry exists.
2026-09-12 · Brand store reviews: the score now counts verified reviews, not reviews

We said: Three designs in one day, each wrong in its own way. First a verified share counted out of each store’s photo gallery, which is not its review list. Then a shop-wide verified count from the platform, scaled onto a product score. Then the platform’s Authentic Shop medal, which is a ratio over a narrower set.

We say now: Every review the widget serves for the product is read one page at a time and the verified flags are counted. Kraken Bond 275 of 283, Sprayman 44 of 44, Akfix 32 of 34, Vega Bond 141 of 213, Y’allCanDIY 15 of 68, BEEST 25 of 225, Magic Chems 8 of 109, ixirpro 7 of 310, TYTAN 0 of 16. The score is built on the verified number.

Each earlier design read something adjacent to the thing a buyer sees and treated it as the thing itself. The medal is the sharpest example: one store holds the top tier while 200 of the 225 reviews under its product are unverified.
2026-09-12 · Y’allCanDIY: whether its own store publishes reviews

We said: That the brand store publishes no reviews, which scored zero on the brand-store line.

We say now: It publishes 68 across its kit pages at an average of 4.75, 15 of them tied to an order. The line scores 2.1 and the kit moves from 44.2 to 46.3.

The same mistake as Vega Bond: the count sits in an attribute on the widget container rather than in the rendered text.
2026-09-12 · Vega Bond Purplecoat: whether its own store publishes reviews

We said: That the brand store publishes no reviews, which scored zero on the brand-store line.

We say now: The Purplecoat page on vbinsulation.com prints 213 reviews at 4.77, and the review platform certifies 241 of the store’s 339 reviews as verified purchases. The line scores 3.9 and the kit moves from 42.9 to 46.8.

The count sits in an attribute on the widget container rather than in the rendered text, so reading the page as a reader sees it showed nothing.
2026-09-12 · Brand store reviews: a verified count exists after all

We said: That no verified-buyer count could be obtained, so the check rested on a sample of reviews read out of each store’s page source.

We say now: The review platform publishes a verified count for four of these stores on its own site: Kraken Bond 325 of 340, Sprayman 58 of 59, Akfix 61 of 63, Vega Bond 241 of 339. Where that census exists it is used and the product’s review count is scaled by the store’s verified share. The sample check now applies only where no census is published.

We stopped at the widget API, which wants the shop’s key, and never looked at the platform’s own public page for the store, which gives the figure away for nothing.
2026-09-12 · BEEST FullStop: we halved its store rating on a reading of our own that was wrong

We said: That three of seventeen readable reviews on beestusa.com carried a verified-buyer flag, which halved the brand-store line from 4.0 to 2.0 and took the total from 60.1 to 58.1.

We say now: Every published review on that store is a verified purchase. The platform gives it the Diamond Authentic Shop medal, the top tier, read the same day. The line is 4.0 again and the total is 60.1.

We counted flags in the store’s photo gallery, which is a different set from its published reviews and includes material submitted outside an order. The gallery sits in the page source and the published reviews do not, so the easier thing to read was the wrong thing to read. It stood for about an hour.
2026-09-12 · Brand store reviews: whether the people who wrote them had bought the product

We said: That the verified share of a store’s reviews could not be checked, so every brand-store rating was scored the same way whoever wrote the reviews.

We say now: The platform publishes it twice over: as a count on its own page for the store, and as an Authentic Shop medal on the store itself, awarded in five tiers and never below 80 percent verified. Kraken Bond 325 of 340, Sprayman 58 of 59, Akfix 61 of 63, Vega Bond 241 of 339, BEEST holding the top medal. ixirpro, Magic Chems and TYTAN hold no medal, which puts them under 80 percent, and their scores are halved.

We asked the platform API for a count, were refused without the shop’s key, and stopped there, instead of opening the page the platform publishes for anyone.
2026-09-12 · Kraken Bond FastCoat: the safety data sheet and who stands behind the product

We said: That Kraken Bond publishes no safety data sheet, and that no legal entity could be attached to the product, which held the identity line at 2 out of 4.

We say now: A thirteen-page GHS safety data sheet for FastCoat, issued 10.05.2025, naming Lotus Global Trade LLC as supplier with a CHEMTREC emergency line, published on krakenchem.com alongside sheets for the rest of the range. The documentation line scores full and the identity line scores full.

We looked at the shop that sells the kit and at one parked domain, and never at the corporate site that carries the company’s document library.
2026-09-12 · Stanley F990P SuperCoat: the fire evidence

We said: A zero for fire evidence, on the basis that a report our desk had seen was unpublished and therefore could not count.

We say now: The report came from Stanley customer support on request, carries the brand name and both indices, and matches the product sold, so it scores one point under a published result. A buyer still has to write and ask, which is what the missing point is for.

The rubric had only two states, published or nothing, and treated a document anyone can obtain by asking as if it did not exist.
2026-09-12 · Every kit: what the score measures

We said: Model identifiers were worth 4 points, R-value scored the same whether it was 4.0 or 5.66 an inch, and where a product was listed was worth 2 points inside the kit block.

We say now: Model identifiers are gone. R-value counts how high the figure is as well as whether it is published. Two new lines, worth six points together, cover how many pack sizes you can pick from in one place and how many shops carry the product.

Identifiers turned out to say more about how a seller builds its catalog than about the foam, and two kits printing an R-value were being scored alike when one needed half again the thickness to match the other.
2026-09-12 · BEEST FullStop: the fire claim, the safety data sheet and the price per ounce

We said: That no smoke-developed index was published, that no safety data sheet appeared on any channel, and that cost per ounce could not be computed because the net contents were unpublished.

We say now: Both indices are published, flame spread 0 and smoke development 120, in the quick start guide. A safety data sheet is published, version 1.1, revised 9 March 2026. The net contents, 26.8 oz, are on the can label in the maker’s own product photograph, so the price per ounce is computed like every other kit.

All three documents are linked from a safety page rather than from the page that sells the product, and we read only the selling page.
2026-09-12 · TYTAN Professional Thermospray: the documents and the pack

We said: That no US data sheet or safety data sheet existed for this pack, and that the Amazon listing we linked was a 12-pack.

We say now: Selena USA publishes a US data sheet updated 26.02.2026 and a thirteen-page safety data sheet, both on tytan.com/us. The listing we had linked is the 2-can kit; the 24-can kit is a separate listing and is the one this page compares.

We looked at the brand store and at the global site, and not at the maker’s US section.
2026-09-12 · Y’allCanDIY: the safety data sheet

We said: That no safety data sheet was published on any channel.

We say now: A thirteen-page safety data sheet, issued 29 August 2025, sits behind an MSDS button on the brand store.

The button is not labeled as a document link and our first read did not open it.
2026-09-11 · Stanley F990P SuperCoat: the documents and the fire wording

We said: That Stanley published no technical data sheet for this kit, and later that the printed manual called it Class A fire rated.

We say now: A dated, revision-numbered technical sheet and a safety data sheet sit on the maker’s own documents page. The manual makes no fire claim: read end to end, its only fire words are the aerosol safety lines.

The documents page is not linked from the product listing, and the manual was summarized rather than read to the end.
2026-09-11 · Kraken Bond foam cleaner: the document and the can size

We said: That no document of any kind existed for this cleaner, and that the can held 12 oz.

We say now: A technical data sheet is linked from the brand product page, and both the sheet and the store say 16.9 fl oz.

The same document scan that missed the Sprayman sheets, and a can size taken from a listing rather than from the sheet.
2026-09-11 · Sprayman sealants: the data sheets

We said: For three days, that Sprayman published no data sheet for any sealant it sells.

We say now: Sprayman publishes a technical data sheet for every sealant in the range, behind a button whose whole label is TDS.

Our document scan matched link text rather than the address behind it, so a button labeled only TDS was invisible to it.
2026-09-11 · Sprayman Fire Block: the document behind the fire claim

We said: That there was no document behind any of the fire wording.

We say now: The sheet was on the brand page the whole time, printing UL 723 flame spread 10 and smoke developed 15.

The same scan, the same missed button.
2026-09-13 · Magic Chems and ixirpro: the R-value, the coverage figure and the specification block

We said: That Magic Chems published no R-value on any channel and that its 480 board feet existed only in an Amazon title, and that ixirpro printed its R-value only on a sibling listing and published no density.

We say now: Magic Chems states R-5.66 an inch in the FAQ on its own store, on the price badge, in its on-page calculator, in the description of all seven Amazon listings and on chem2go, and 20 sq ft a can at one inch in that calculator, which is where the 480 comes from. ixirpro states R-5.66 an inch on its own kit page and a density of 22 plus or minus 3 kg/m3 in a Product Specs block. Its yield criterion moves from 0 to 2 and its R-value criterion from 0 to 4; ixirpro’s R-value reason changes while the score stays at 2.5, and its density stays at 0 because no test method is named.

The document scan looked for files and read the listing titles, and stopped there. Both figures were in page copy: a FAQ accordion, a badge, a calculator and a product description, none of which is a file. The rule for the technical sheet now says in so many words that a specification block on a product page is not a data sheet, so the zero it scores is the rule rather than a judgement call.
2026-09-14 · Research rating, B5 density line for Kraken Bond FastCoat, Sprayman SprayCoat and Stanley F990P SuperCoat

We said: All three scored the full 4 points for a density of 0.94 plus or minus 0.06 lb/ft3 under ASTM D1622, read as the figure for a four-sheet family because the Akfix ThermCoat sheet, which prints it, shares its other values with theirs. Totals: Kraken 90.7, Stanley 83.8, Sprayman 79.0; published order Kraken, Stanley, Akfix, Sprayman.

We say now: The density is printed on the Akfix ThermCoat sheet only and is not transferred. The FastCoat, SprayCoat and SuperCoat sheets carry no density line and score 0 on B5. Totals: Kraken 86.7, Akfix 83.7, Stanley 79.8, Sprayman 75.0; published order Kraken, Akfix, Stanley, Sprayman. The Akfix line is labeled specific gravity on the sheet and is read as a density because lb/ft3 is a density unit.

Shared values on similar sheets are not a maker’s statement that the products share a formulation, and the sheets are not identical: the three carry a 5 plus or minus 2 minute tack-free or skin time against Akfix’s 4 minutes.
2026-09-14 · Research rating, B4 R-value publication tier for BIGRIZY GUARD

We said: 3 points for an R-8.52 at 2 in figure stated on one channel and not contradicted, while Vega Bond and Adhesive Guru scored 1.5 for figures that were also on one channel.

We say now: 1.5 points. A figure printed on one channel only scores the middle tier for every product, because the full tier requires two or more channels that agree. BigRizy’s total moves from 34.3 to 32.8.

The same evidence position was scoring differently across three products and the written rule did not say why.
2026-09-14 · Research rating, ixirpro Spray Foam Kit marketplace line

We said: E1 printed as 10.0 and the total as 46.7.

We say now: E1 is 10.1, which is what 3.8 from 353 ratings plus the 6-point badge band gives when rounded to one decimal; the total is 46.8. Every computed line now carries its inputs and a script recomputes them.

The points had been typed by hand beside the inputs rather than computed from them.
2026-09-14 · Research rating, price per ounce for Adhesive Guru QuickCoat and Magic Chems Spray Foam Kit

We said: Adhesive Guru scored 14.7 on price per ounce from a 32.8 oz can figure that no channel states as net or gross (total 45.6). Magic Chems scored 14.5 from the 12-can kit at 151.99 while its card, coverage row and material line describe the 24-can kit (total 45.6).

We say now: Adhesive Guru’s price line is not computable and scores 0 until a net figure is published; its total is 30.9. Magic Chems is priced on the 24-can kit the card compares, 324.99 on the brand store on September 11, 2026, 0.533 an ounce, 13.6 points; its total is 44.7.

The price rule divides by net ounces and prices the pack the page compares; neither line was doing what the rule said.
2026-09-14 · Research rating, the brand store review line

We said: Labeled ’Brand store reviews’ and described as counting verified reviews rather than reviews, which read as a score of verified buyers alone.

We say now: Labeled ’Brand store rating, weighted by verified count’. The star average is the store’s average across all reviews the widget serves; the weight is how many of those carry the platform’s verified-purchase label. The line says the two figures come from different sets, and a review without the label is not read as false.

The widget publishes an all-reviews average and a per-review label, not a verified-only average, and the published description did not say so.
2026-09-14 · Research rating, the marketplace buying signal, and the BEEST FullStop record

We said: Amazon’s bought-in-past-month badge was described as a count of what shipped last month and as the one figure a brand cannot manufacture; BEEST FullStop was called the busiest kit in America, its badges were summed to 2,350 a month, and listings Amazon would not serve were counted as carrying no badge.

We say now: The badge is Amazon’s own estimate of recent purchasers on the listings we could read, not units shipped and not a market position. BEEST’s 2,350 is the sum across the 14 pack-size listings read on September 12, 2026, the largest among the kits we track; a customer buying two sizes can be counted twice, and unread listings are unknown rather than zero. No score moved.

Amazon defines the badge as an estimate of recent purchasers, and a sample of tracked listings cannot support a national claim.
2026-09-14 · TYTAN Fire Block 113 and Fire Block Extreme claim-checkable mark

We said: Both TYTAN fire block records carried the ’claim checkable’ mark on the strength of a UL 723 surface-burning pair and an index number

We say now: Neither carries the mark. Their sheets print a UL 723 pair and name NFPA 286 with no result, listing or report number; a surface-burning result does not earn the fireblocking mark for any brand

The category’s own traceable rule requires a fireblocking test with a lookup number, and the same evidence was refused the mark on Kraken Bond and Sprayman
2026-09-14 · Count of fire block sheets printing both surface-burning indices

We said: Kraken Bond Extreme Fire Block was described as one of two sheets, and in the ONE_LINE as the only listed sheet, with both UL 723 indices; the FAQ said two cans print a complete result

We say now: Four sheets print both indices (Kraken Bond, Sprayman’s shared sheet, TYTAN Fire Block 113, TYTAN Fire Block Extreme), covering five listed cans; none earns the fireblocking mark

The TYTAN records were added after the sentences were written and the sentences were not recounted
2026-09-14 · Black foam plant and fish statements, and the count of black foams with a US surface-burning figure

We said: DAP Touch ’n Seal Black was called the only black foam with a US surface-burning figure, and Stanley and DAP were called the only makers with a plant and fish statement; Kraken Bond was said to have no fish statement

We say now: DAP and TYTAN both print a UL 723 pair; Kraken Bond’s straw sheet (4.9.2026 rev. 2) states the foam does not harm aquatic or terrestrial life above or below the waterline, with no test named

The TYTAN record was added after the DAP sentences were written, and the Kraken straw sheet sentence was missed on the first read
2026-09-14 · Stanley F948P cold-weather claim

We said: Described as the only cold-weather window foam in the set

We say now: One of two cans in the category sold on a cold-weather claim: Stanley’s 10 F in a listing title, TYTAN’s -4 F on a dated sheet for the 24 oz Window & Door Extreme can

TYTAN Window & Door Extreme was added to the category with a -4 F application range on its sheet
2026-09-14 · TYTAN Window & Door Extreme, TYTAN Fire Block Extreme and Akfix 892 document scope

We said: The 12 oz straw cans carried the claim-checkable mark and figures from sheets that name only the 24 oz can

We say now: The sheets are recorded as naming the 24 oz can only; the straw cans’ figures are marked not verified and the mark is withheld for them (Akfix 892’s gun can keeps its own mark)

The card’s weight and applicator, the sheet and the purchase ASIN must belong to the same variant
2026-09-14 · TYTAN Window & Door Extreme pressure statement

We said: The 80 to 110 percent post-expansion figure was presented as ’the low-pressure expansion figure that matters when a frame can bow’

We say now: The sheet states a low pressure formula in words and names AAMA 812-19 without a figure; 80 to 110 percent is a volume increase to EN 17333-2 and is not a pressure measurement

A post-expansion ratio is a volume result and cannot stand in for a pressure test
2026-09-14 · Kraken Bond Pro PestSafe pest claim classification

We said: Shown on the pest page as ’Protects the foam’ (the exempt, treated-article side) although its note said neither the sheet nor the store states what is protected

We say now: Shown on the building side: the sheet says ’helps block the entry of pests’ and the store adds a pesticide with no target or ingredient named

An unstated protection target cannot be recorded as the positive, exempt claim
2026-09-14 · Stanley F902P 12-pack unit price

We said: The 12-pack at $135.60 was said to cost more per can than the $15.99 single

We say now: The 12-pack works out to $11.30 a can, about 29 percent less than the $15.99 single, both September 7, 2026 prices

Arithmetic error: 135.60 / 12 = 11.30
2026-09-14 · Privacy policy: what the site collects

We said: ’Nothing directly ... nothing you type reaches us’ and ’The site ... collects nothing from anyone.’

We say now: Personal data reaches the desk by email: sender address, name, message and attachments are received, used to reply and to keep the correction record, and kept for as long as that record exists.

The same page acknowledged keeping submitted documents and correspondence; the opening denial contradicted it.
2026-09-14 · Privacy policy: outside services

We said: ’The one page that talks to outside services’ was the weather check; ’the rest of the calculators on this site work entirely in your browser.’

We say now: Product pages with videos request thumbnails from YouTube on load and the youtube-nocookie embed on play; some product photos are loaded from Amazon’s image servers; the glossary keeps the page you came from in session storage; the weather check remains as described.

The network inventory of the built pages showed YouTube and Amazon image requests and a sessionStorage key that the page did not mention.
2026-09-14 · Submissions and editorial policy: what a submission gets

We said: ’A complete submission gets the record updated and the date of the change printed on the page’ and ’we answer every complete submission.’

We say now: Every submission is read against the record and ends in one of four states: received, in review, updated with a dated note, or no change with the reason given in the reply. No response time is published.

The promise of an update for every complete submission was not conditioned on what the document shows and was not backed by a stated service target.
2026-09-14 · Ownership page: the BEEST name

We said: ’The resemblance is a coincidence of names. Best Spray Foam is not affiliated with, owned by, or sponsored by BEEST or its seller.’

We say now: Best Spray Foam is an independent publication; the BEEST kit is one of the products it reviews under the same rules; the commercial relationships the site has and plans are stated on the ownership page.

A statement about why two names resemble each other is not something the desk can evidence; the page now states the facts it can stand behind.
2026-09-14 · TYTAN Thermospray: the FAQ carried another kit’s ratings and the wrong pack

We said: That the page compared a 12-pack and that the kit rated 4.3 from 564 Amazon ratings; those figures belong to Vega Bond Purplecoat.

We say now: The page compares the 24-can kit (Amazon B0FQ672N7M and store.tytan.com), which carried 3.9 from 3 ratings on September 12, 2026. The product-source record now also states that Selena USA publishes a dated US data sheet and safety data sheet on tytan.com/us.

A FAQ block written for one kit was reused for another and never re-read against the record.
2026-09-14 · Magic Chems: the 24-can kit is orderable and is the pack the page prices

We said: That the 24-can kit was not orderable and the 12-can kit was the product today, and that the buyer pool was positive on a very large sample.

We say now: On September 11, 2026 the store had the 24-can kit at $324.99 in stock and Amazon carried it as B0DNXSVD3L; the score prices that pack. The 24-pack listing pool reads 3.5 from 148 with 24 percent at one star; the 12-pack is a separate listing at 4.2 from 376.

Stock and price were re-read on September 11 but the body text, the buyer summary and the specification rows kept the September 8 reading.
2026-09-14 · DAP Wall & Cavity: the gap to the 5.66 kits is not a measurement of aging

We said: That the 28 percent gap between DAP’s aged R-4.1 and the other kits’ R-5.66 was about the size of the aging effect.

We say now: The figures come from different products on different test and aging bases, so the gap cannot isolate aging. DAP shows what an aged, method-named figure looks like; the others do not print one.

A difference between two products was attributed to a single cause without a like-for-like basis.
2026-09-14 · Stanley F990P: the fire score is not zero

We said: A product-source note said the fire criterion scored zero.

We say now: The fire criterion scores 11 of 12: the published sheet has no fire section, and the score rests on a test report Stanley support sent on request, one tier below a printed result.

The note was written before the report arrived and was not updated when the score was.
2026-09-14 · Project pages: van and shed ventilation, permits, condensation and sound

We said: That a van had no code and the label was the whole rulebook; that open doors and short sessions were a ventilation plan; that sheds under 200 sq ft need no permit; that the first inch stops condensation on steel; that foam adds no mass.

We say now: Vehicle conversions carry vehicle, state, local and insurance requirements; ventilation, respirator and re-entry conditions come from the exact product’s label and safety data sheet; permit exemptions depend on jurisdiction and use; a first inch can stop condensation when the assembly and thickness suit the conditions; foam adds little mass.

Card summaries had dropped the conditions their own body text carried, and two safety shortcuts had become advice.
2026-09-14 · Project arithmetic: shed, rim joist, sound and DAP examples

We said: A shed introduction said 250 sq ft of wall and 370 board feet where the worked example gave 300 and 420; the rim joist page called a 12-pack enough for a job its own example sized at 281 board feet at 2 in; the sound page priced 96 sq ft at two sheets; the DAP one-liner said a rim joist bay took a can and a half.

We say now: Each example now states its geometry: 300 sq ft of wall and 420 board feet at 1 in; a 12-pack covers the rim joist example at 1 in and the 24-pack at 2 in; 96 sq ft takes three 4 by 8 sheets per layer; one 16 in bay between 2x12 joists is about 1.1 sq ft, so a can covers roughly five bays at 2 in on the stated figure.

The examples were written at different times from different inputs and never reconciled.
2026-09-14 · Garage and value pages: which foam is cheaper per claimed board foot

We said: The garage page said a canister kit was cheaper per stated board foot; the value page said single-can kits were cheaper by roughly half.

We say now: On the stated figures the single-can kits cost less per claimed board foot; a canister’s case on a ceiling is speed and reach, and the value page says so with the arithmetic.

Two pages used different cost definitions without saying so.
2026-09-14 · Thickness guide: the doubling question and the whole-wall shares

We said: The FAQ answered that doubling insulation does not halve heat loss; the table called the R1 baseline "nothing"; the whole-wall shares printed 90.9 and 83.7 percent.

We say now: For a fixed temperature difference and the same path, doubling R halves conduction through that path, and whole-building use need not halve; the baseline is an R1 reference assembly; the shares computed from the rounded values shown are 90.6 and 83.5 percent, with ORNL’s own 90.9 and 83.7 footnoted.

The FAQ answered a different question from the one it asked, and the shares were copied from the paper rather than computed from the shown inputs.
2026-09-14 · R-value guide: what the site does with per-inch figures

We said: That the site never divides a reported R-value by its thickness, and that 5.66 was 0.025 W/mK rounded down.

We say now: The comparison tables do bring kits to one inch, labeled as arithmetic with the thickness and document each figure came from, and never present the result as a tested value at another thickness. The four sheets print both 5.66 and 0.025 W/mK; converting 0.025 gives about 5.77, and the 1.9 percent gap is unexplained rather than a rounding.

The rule text was older than the tables it described.
2026-09-14 · Kraken FastCoat: which packs carry the wide-spray cans

We said: A FAQ said the 24-pack was the size where the box starts carrying wide-spray cans.

We say now: The 18-can kit ships one ThermaFoam Wide Spray can and the 24-can kit two, at no change to the pack price; the 12-pack ships none.

The FAQ was written from the 24-pack listing alone.
2026-09-14 · BEEST FullStop: the R-value comparison and the missing data sheet

We said: That R-4.12 was the lowest figure of any kit that publishes one, and that no technical data sheet exists on any channel.

We say now: TYTAN and Y’allCanDIY sit at 4.0 and BONDURE at 4.07, so 4.12 is among the lowest, not the lowest. No data sheet was found on the channels read as of September 12, 2026, and none was sent when asked; that is a finding about the search, not a proof of absence.

A comparative was left standing after new rows were added, and an absence was written as a certainty.
2026-09-16 · TYTAN Fire Block 113 and Fire Block Extreme claim-checkable mark

We said: Neither carried the mark: their sheets name NFPA 286 with no result or report number beside it, and the Extreme 12 oz straw can had no document

We say now: Both carry it. TYTAN names ICC-ES ESR-3302 on its fire block flyer and on a dated sheet for the Extreme 12 oz straw can, and the report evaluates both foams under AC546 for keeping wood fireblocking intact where it is penetrated, on NFPA 286 test reports, within Type V-B and non-rated residential construction

We read the sheets, and not the other downloads on TYTAN’s own product pages, where the report number and the straw can’s sheet are
2026-09-16 · Stanley F952 Fire Block and F905 Gaps & Cracks: the smoke-developed index

We said: Both records said the sheet prints a UL 723 flame spread index and no smoke-developed index

We say now: Both sheets print the pair: F952 flame spread 10 and smoke developed 15, F905 flame spread 10 and smoke developed 20

The smoke figure sits on the next row of the table with its parameter and method cells blank, and we read that row as empty
2026-09-16 · Akfix 840 Fire Block: the brand’s sheets

We said: The record said Akfix publishes no sheet for this foam on its US store or on akfix.com

We say now: Akfix publishes a sheet for the 840 straw foam on akfix.com and one for the 840P gun foam on both sites, 2017 revisions that give DIN 4102-1 class B2 and "UL listed" for a 900 g pack rather than the US cans

We looked on the store page for the straw can, which has no documents, and not on the gun foam page or the maker’s fire-rated range
2026-09-16 · Froth-Pak 200 and 630: the R-value basis

We said: The records read the product page’s aged LTTR at 2 in as the only basis, and the two-component page called LTTR a reporting protocol rather than a named test

We say now: DuPont’s Product Information Sheet gives R-6.2 at 1 in and 12.2 at 2 in, each aged 180 days at 75 F under ASTM C518, and the sheet is on file

The sheet sits in DuPont’s resource center and not on the product page
2026-09-16 · Stanley F994C and Vega Bond: PPE in the box

We said: The Stanley record said its retail page lists no PPE, and the Vega Bond note called it the only maker here that ships PPE in the box

We say now: The Stanley retail page packs a coverall, safety glasses and nitrile gloves and tells the user to wear a respirator; Vega Bond and Stanley both ship PPE in the box

The packing list is on the Stanley retail product page and was missed
2026-09-16 · HandiFoam Low Density: the STC test wall

We said: The note said the sheet does not give the wall behind STC 35

We say now: The sheet describes it: 5/8 in OSB outside, one layer of type X gypsum inside, 2 by 4 studs and 3 in of foam. It gives no stud spacing

The wall is described on the second page of the sheet

What we do not do

We do not remove an open question because a maker would prefer it gone. An open question closes when the document that answers it is in the record. We do not adjust a score, mark or position in response to anything other than evidence.

How to report an error

Write to research@beestsprayfoam.com, or use the link at the bottom of the page you are reading, which fills in the product and the URL for you. Tell us the page, the sentence, and what the correct statement is, with the document that supports it if there is one. A report that identifies a specific sentence is the one we can act on, and every fix is dated.

What happens to a report

Reports are read by the Best Spray Foam research desk. Each one ends in one of four states, and where the message includes a way to reply we write back to say which: received; in review; updated, with the change dated on the page and, where it reverses a statement, logged above; or no change, with the reason, which is that the cited document does not cover the product, size or claim, or that the record already says what the report asks for. We do not publish a response time. Reports that a page states a safety-related figure wrongly are read first. Your name, address and correspondence are not published; the privacy page says how they are kept.

If you make or sell something we cover, the same address is your right of reply. We publish what a maker states and what it does not, and where we have read a document wrongly we would rather hear it from you than leave it standing.