Provisional #5 · Fire claim contested · Best Spray Foam research desk · Documents checked 2026-09-12

BEEST FullStop 24-Pack Review

FullStop sits fifth on its buyer-feedback block, not on what it can show you. Across the 14 pack-size listings in its Amazon family read on September 12, 2026, the bought-in-past-month badges add to 2,350, more than five times the next kit here, and the 12-can kit alone carries a 1K+ badge. That badge is Amazon’s estimate of recent purchasers on those listings, not a count of units shipped and not a measure of the foam. Against that: there is no technical data sheet on any channel, and none came back when our desk asked customer support for one. What does exist is real and badly placed. A thirteen-page safety data sheet, version 1.1, and a quick start guide carrying both surface-burning indices, flame spread 0 and smoke development 120, sit on a safety page the product listing does not link. The fire figures have no tested thickness, no laboratory and no report number, and the report support sent back describes a foam of a different color with no brand name on it, so it could not be matched to what is being sold. The net contents are legible only on the can in the maker’s own photograph. Read the R-value before you buy: 4.12 an inch is the lowest of any kit here that states one, so a 2-inch pass buys you about what 1.5 inches buys from the four coats above it.

This site is not connected to BEEST. The names are close and the domain is beestsprayfoam.com because bestsprayfoam.com was taken, but this kit is read by the same rules as every other one here. About this publication

Before you decide

BEEST FullStop 24-Pack

Pack this page compares
24-Pack, 24 x 26.8 oz (net, from the can label)
Claimed coverage
480 sq ft at 1 in (claimed)
R-value as published
R-4.12 / in (from 8.24 at 2 in)
Evidence
Fire claim contested

Research summary, not a hands-on test. Product claims on this page are attributed to the sources and dates shown. Before use, read the exact product label, the current safety data sheet and the application instructions, and confirm ventilation, protective equipment, occupant isolation and re-entry or reoccupancy conditions. A surface-burning classification alone does not establish approval to leave foam exposed or to use it in a particular assembly. Included protective items may not meet every requirement for your job; select ventilation and protective equipment from the exact product instructions and the exposure conditions, not from what the box contains.

Report a product error Score Maker’s description Documents Packs and prices Right of reply

Research desk note · editorial opinion, not a test result

What to check first

Check the fire claim before you pay anything for it, and know where to look. The brand’s page states an ASTM E84 flame spread index of 0 for cured foam and the Amazon listing says Class A. Class A needs two numbers, a flame spread index of 25 or less with a smoke-developed index of 450 or less, and both are published: the quick start guide, linked from the maker’s safety page rather than from the product page, prints flame spread 0 and smoke development 120. What is still absent is the tested thickness, the laboratory and the report number, so the result cannot be tied to an assembly or to the cans in the box.

Read the coverage figure as a volume, not an area. The Amazon title says 480 board ft/sq.ft. and the specification field says 480 square feet, while the brand recommends a 2-inch layer. At 2 inches, 480 board feet covers about 240 square feet, which is what the brand’s own page describes.

The listings agree on most of the practical numbers and disagree on the ones that decide a purchase. That is the whole reason this table exists.

A note on names. This site is Best Spray Foam and lives at beestsprayfoam.com because bestsprayfoam.com was already taken; the product on this page is sold as BEEST. There is no relationship between the site and the BEEST brand or its seller, and this kit is reviewed under the same rules and printed criteria as every other kit here. The commercial relationships the site has and plans are stated on the ownership page.

Best Spray Foam research desk ·

Research rating

What the documents support, out of 100

Desk confidence: Open
58.5of 100
  • Product documentation 10 / 30
  • Claim traceability 10.5 / 20
  • What you get 9 / 9
  • Price per ounce of product 11.7 / 15
  • Buyer feedback 16.3 / 20
  • Buying options 1 / 6
Every point, and the fact behind it
Technical data sheet 0 / 12 No technical data sheet on the official page, on the maker’s safety page or on either marketplace listing. Our desk asked BEEST customer support for one and none was sent, so there is nothing to read and nothing to score.
Safety data sheet 6 / 6 A thirteen-page GHS safety data sheet for FULLSTOP, issued 30 January 2026 and revised 9 March 2026 at version 1.1, supplier PetraTools of Carlisle with a ChemTrec line. It sits on the maker’s own safety page, which the product page does not link.
Fire evidence 4 / 12 Both indices are published, in the quick start guide the maker links from its safety page: flame spread 0 and smoke development 120 to ASTM E84, which is inside Class A on both counts. What is missing is the tested thickness, the laboratory and the report number, so the result cannot be tied to an assembly. Our desk also asked customer support for the test report. Something came back, and it describes a foam of a different color and carries no brand name, so we could not match it to the product being sold. An unmatched report earns nothing here, and this score is the published guide’s alone.
Net contents per can 2 / 4 The can label reads "Net: 26.8 Oz / 762 g" and is legible in the maker’s own product image on its own store, read 2026-09-12. The two figures agree with each other. No channel states it in text, so it can be read only off the package.
Yield stated with its conditions 4 / 4 The quick start guide gives the layer, the distance and the speed: thin coats of about 1 inch, 15 to 30 minutes apart, to a minimum of 2 inches total, sprayed 12 inches from a wall and 6 to 8 from a ceiling at a slow steady sweeping pace. The listing title still states board feet and square feet as the same number.
R-value, published and how high 1.5 / 4 R-8.24 at 2 inches on two channels, against 8.14 in the Walmart specification field, so 1.5 rather than 3 for a figure the channels do not agree on. The magnitude adds nothing: 4.12 an inch is the lowest of any kit here that states an R-value, and it takes about 2.75 inches of this foam to reach what the four coats reach in 2.
Density published 0 / 4 No data sheet on any channel, so no density or specific gravity to read.
Maker identity 3 / 4 The safety data sheet names PetraTools at 411 Northeast Street, Carlisle, Pennsylvania, with a phone number, and the store publishes the same address as Beest USA. There is no corporate site apart from the shop.
Equipment in the box 5 / 5 Gun, cleaners and protective equipment, with a second cleaner from 24 cans up.
Material in the pack 4 / 4 24 cans at the 26.8 oz on the label, 643.2 oz of product.
Pack sizes you can pick from 0 / 3 The brand store sells seven pack sizes and gives each one its own page with a single fixed option, so there is no size selector anywhere on it. One point comes off on top of that: the gun, the cleaner and the safety kit are listed as separate products priced at zero rather than being part of the pack, which is why ordering more than one pack does not get you more than one gun. Read 2026-09-12.
How widely it is sold 1 / 3 Three channels on 2026-09-12: the brand store, Amazon and Walmart, which carries the 12-pack and the 24-pack. No third-party retailer found.
Cost per ounce of product 11.7 / 15 399.99 dollars on the brand store for the 24-can kit, 643.2 oz on the can label, is 0.622 an ounce. Read 2026-09-12.
Marketplace rating and buying signal 13.9 / 15 4.2 from 611 Amazon ratings on the pack this page compares, read 2026-09-12, worth 5.9 of the seven rating points. Bought-in-past-month badges on 12 of the 14 pack-size listings in the Amazon variation family of the 24-can kit, ASIN B0DZJ25N8V, add to 2,350, which is the 8-point band: the 12-can kit at 1K+, the 24-can kit at 200+ and the 12-can foam-only pack at 200+ are the largest. All 14 listings in the family were read on 2026-09-12. The sum is Amazon’s estimate of recent purchasers on those listings, not units shipped, and a customer who bought two sizes can be counted twice.
Brand store rating, weighted by verified count 2.4 / 5 4.56 across 225 reviews on beestusa.com, read 2026-09-12, of which 25 carry the platform’s verified-purchase label, 11 percent. The average is over all 225; the 25 is the weight. The store holds the platform’s top Authentic Shop medal, which is a ratio taken over a different set and does not describe the reviews on this product page.

Why this confidence level · editorial opinion, not a test result

Core documents are missing or a headline claim cannot be checked at all. Everything this kit publishes is real and almost none of it is where a buyer would look. The safety data sheet, the quick start guide with the full application method, and both surface-burning indices sit on a safety page; the net contents are legible only on the can in the product photograph; the page that sells the kit links none of it. What is genuinely open is the part a fire claim rests on: no tested thickness, no laboratory, no report number, and no technical data sheet at all. The net contents are published, though only on the can itself: the label in the maker’s own product photograph reads 26.8 oz, 762 g, which is what the cost-per-ounce figure divides by. It has the largest Amazon rating pool of the kits we track and the largest bought-in-past-month sum, 2,350 across the 14 pack-size listings read on September 12, 2026, and it scores highest on the feedback block by a distance. That badge is Amazon’s estimate of recent purchasers rather than a count of units shipped, and the block is capped at twenty, which is worth holding in mind beside the rest of this record: what carries this kit’s score is the feedback block, not what it can show you. Our desk wrote to customer support for the missing paperwork. The safety data sheet came back and matched. No technical data sheet came back at all. Something came back for the fire report, and it describes a foam of a different color with no brand name on it, so we could not tie it to the product being sold and it earns nothing. The buying side has its own quirk worth knowing before you order more than one pack: the gun, the cleaner and the safety kit are listed on the store as separate products priced at zero rather than being part of the kit, so two packs in a basket still comes with one gun. Its store rating comes with a second number. The FullStop page shows 4.56 across 225 reviews, and 25 of the 225 carry the platform’s verified-purchase label. The store holds the platform’s top authenticity medal, which is a ratio taken over a different set and says nothing about the 225.

Scored on . The score is what the documents support; the confidence level is our view of that evidence and never changes the arithmetic. How the rating is built · All 13 scored side by side.

How the manufacturer describes it

The following is compiled from the manufacturer’s own published statements on its official product page and its Amazon listing. It is presented as the brand describes the product. We have not tested it and we do not adopt these claims.

  • A one-component, moisture-cured polyurethane foam for walls, ceilings, attics, roofs, basements and garages, described as expanding to seal gaps and cracks and as adhering to wood, metal, drywall, brick, concrete and glass.
  • Two nozzles are supplied: the brand describes a blue tip for vertical surfaces and a black tip for horizontal work.
  • A recommended 2-inch layer, applied as two 1-inch coats, at an application temperature of 68 to 77 F.
  • A stated full cure of about 6 hours, after which the brand says the foam can be trimmed or painted.
  • The Amazon listing describes the formulation as a hybrid, a closed-cell outer skin with an open-cell core. The brand does not publish a density figure or a test report for that description.
  • BEEST describes itself as a family-owned US business with a support team available 24 hours a day.

Compiled from BEEST USA, 24 Pack FullStop Spray Foam Insulation Kit and the brand's marketplace listing, read on .

As an Amazon Associate I earn from qualifying purchases. That fee never sets the order or the score.

Documents on file

What exists for this product, what each document says in its own terms, and what it leaves open. A document we have seen but the seller does not publish is described, not hosted.

  • Technical data sheet Not published on any channel we read

    Technical data sheet · read 2026-09-12

    Open:
    • We did not find a data sheet on the official page, the safety page or either marketplace listing as of September 12, 2026, and none was sent when our desk asked customer support for one
  • Safety data sheet Published by the seller

    FULLSTOP safety data sheet, version 1.1, revised 9 March 2026 · read 2026-09-12

    • Written to 29 CFR 1910.1200, thirteen pages, superseding the 30 January 2026 issue
    • Supplier PetraTools of Carlisle, Pennsylvania, with a ChemTrec emergency line
    Open:
    • It is linked from the maker’s safety page and not from the page that sells the product
  • User manual Published by the seller

    FULLSTOP quick start guide · read 2026-09-12

    • Thin coats of about 1 inch, 15 to 30 minutes apart, to a minimum of 2 inches total
    • Sprayed 12 inches from a wall and 6 to 8 inches from a ceiling, at a slow steady sweeping pace
    • Cans at room temperature, 68 to 77 F, and work between 41 and 86 F
    • Surface skin in 5 to 10 minutes, fully cured in 24 hours
    • A NIOSH respirator with organic vapor cartridges, glasses, coveralls and nitrile gloves
  • Fire test report Published, with an open question

    Fire claim · read 2026-09-12

    • The official page states an ASTM E84 flame spread index of 0 for cured foam and describes the product as Class A
    • The quick start guide prints both indices: flame spread 0 and smoke development 120, with the note that the rating does not replace required firestopping or thermal barrier assemblies
    Open:
    • No tested thickness, laboratory name or report number is published
    • Our desk asked customer support for the test report. What came back describes a foam of a different color and carries no brand name, so we could not match it to the product being sold and it counts for nothing in the score.

The FastCoat, SprayCoat, ThermCoat and SuperCoat documents state the same yield basis of 20 board feet at 1 inch, the same nozzle A for walls and nozzle B for ceilings, the same 1-inch layer advice with water misting between coats, and the same 24-hour cure with a 40-minute cutting time. The SprayCoat and ThermCoat data sheets also carry the same packaging line, 28.7 oz at a gross 2.05 lb with 12 to a box. We record that pattern and draw no conclusion from it: none of the four states a relationship with the others, and we have not established who manufactures any of them.

What three sellers publish about the same kit, and where they disagree

FieldOfficial pageAmazon listingWalmart listing
Pack on this page24 cans24 cans12 cans (a different pack)
Stated R-value8.24 at 2 in, and 4.12 per inch8.24 at 2 in8.24 at 2 in in the description; 8.14 in the specification field
Stated coverageAbout 240 sq ft at 1 in per 12 cans, about 120 sq ft at 2 in480 board ft/sq.ft. in the title; 480 square feet in the coverage fieldAbout 240 board ft for 12 cans
Net contents per canNot in the page text; the can label in the store’s own product image reads Net 26.8 oz (762 g)Not in the text; the unit-price fields imply about 26.8Not published
Recommended thickness2 inches, as two 1-inch coats2 inches2 in
Application temperature68 to 77 F68 to 77 FNot stated in the specification table
Full cureAbout 6 hoursNot statedNot stated
Fire statementClass A, and an ASTM E84 flame spread index of 0 when curedClass A fire rated, meets ASTM E84Class A fire rated, meets ASTM E84
Smoke-developed indexNot publishedNot publishedNot published
UPCNot published on the page810148643195810148642532
Shipped weightAbout 51 lb53.2 lbNot stated
WarrantyThe page shows both a 1-year and a 10-year warranty statementNot statedHas written warranty: No
Sold byBEEST USAPETRA TOOLS; the manufacturer field reads PetraOutdoor Trading LLC

What the differences mean

Both fire numbers exist, in a document the product page does not link

Class A is a pair of results: a flame spread index of 25 or less together with a smoke-developed index of 450 or less. The official product page publishes only the flame spread index of 0. The quick start guide, which the maker links from a separate safety page, prints both: flame spread 0 and smoke development 120, with a footnote that the rating does not replace required firestopping or thermal barrier assemblies. No tested thickness, laboratory name or report number appears with either.

Why it matters. A buyer standing on the page that sells the product sees half a classification. The other half is two clicks away on a page about safety, which is a listing problem rather than a documentation one. The fire line stays pending for a different reason: without a thickness and a report, the result cannot be tied to an assembly or to the cans in the box.

Sources: BEEST USA, 24 Pack FullStop Spray Foam Insulation Kit · Amazon listing B0DZJ25N8V, BEEST FullStop 24-pack kit · Walmart item 18098158810, BEEST FullStop 12-pack kit

The net weight is on the can and nowhere else

None of the three listings states a net weight per can in its text. The figure is printed on the can itself: the label in the maker’s own product photograph on beestusa.com reads "Net: 26.8 Oz / 762 g", and the two units agree with each other. Amazon’s unit-price fields imply the same 26.8. The Amazon page also gives a shipped kit weight of 53.2 lb for 24 cans plus a gun, two cleaners and safety gear, which is not a net contents figure. Read 2026-09-12.

Why it matters. Net contents per can is the one number that lets you compare two brands’ cans at all, and it is the first line of any pack-to-document match. Reading it off a photograph works, and it is how the cost per ounce on this page is computed, but a figure a buyer has to zoom into a picture to find is weaker than one printed in the listing.

Sources: BEEST USA, 24 Pack FullStop Spray Foam Insulation Kit · Amazon listing B0DZJ25N8V, BEEST FullStop 24-pack kit · Walmart item 18098158810, BEEST FullStop 12-pack kit

Three different R-value statements

Amazon and the official page state 8.24 at 2 inches. The official page also states 4.12 per inch. Walmart’s specification field states 8.14, while the description on the same Walmart page says 8.24 at 2 inches.

Why it matters. A per-inch figure is the form the FTC R-value Rule restricts on insulation labels and ads, and an unexplained 8.14 against 8.24 on the same listing is an open question rather than a rounding difference.

Sources: BEEST USA, 24 Pack FullStop Spray Foam Insulation Kit · Amazon listing B0DZJ25N8V, BEEST FullStop 24-pack kit · Walmart item 18098158810, BEEST FullStop 12-pack kit

Board feet and square feet used interchangeably

The Amazon title reads 480 Board ft/sq.ft. and the specification field reads 480 square feet. The official page describes about 240 square feet at 1 inch per 12 cans and about 120 square feet at 2 inches.

Why it matters. Board feet is a volume and square feet is an area. At the brand’s own recommended 2-inch thickness, 480 board feet finishes about 240 square feet, so a buyer reading 480 square feet could plan for twice the area the product supports.

Sources: BEEST USA, 24 Pack FullStop Spray Foam Insulation Kit · Amazon listing B0DZJ25N8V, BEEST FullStop 24-pack kit

Two warranty statements on one page, and none at one retailer

The official product page shows a 1-year warranty in one place and a 10-year warranty in another. Walmart’s specification table records: has written warranty, No.

Why it matters. A warranty is part of what you are buying. Ask which term applies to the pack you are ordering, from the seller you are ordering it from, and get it in writing.

Sources: BEEST USA, 24 Pack FullStop Spray Foam Insulation Kit · Walmart item 18098158810, BEEST FullStop 12-pack kit

A formulation description with no supporting document

The Amazon listing describes a hybrid formulation, a closed-cell outer skin with an open-cell core. No density figure, data sheet or test report supporting that description is published on any of the three listings.

Why it matters. Cell structure affects moisture behavior and thermal resistance, and density is one of the three conditions the residential code sets for exposed rim-joist foam. A description is not a specification.

Sources: Amazon listing B0DZJ25N8V, BEEST FullStop 24-pack kit

In the box

  • 24 foam cans
  • 1 applicator gun
  • 2 solvent-based cleaners, where kits up to 18 cans include one
  • Gloves, goggles and a coverall

Included protective equipment is close to standard across the kits in this category, so it is rarely a reason to choose one over another. Its exact contents vary by size and we do not itemize them. What it is never a substitute for is the product’s own safety data sheet, the instructions and a work plan sized to your space and ventilation.

Every pack size, and what each one costs per can

The listing sells two things under one product page: the foam on its own, and the same foam boxed with an applicator gun, cleaner and safety gear. Each size exists in both forms, and the price gap between them is what you are paying for the equipment. Prices below were recorded on one day and will move; the arithmetic beside them is the part that stays useful.

CansFoam onlyKit with gun and gearKit premium
1 $19.95$19.95 a can $49.95$49.95 a can $30.00
2 $39.95$19.98 a can $79.95$39.98 a can $40.00
6 $109.95$18.32 a can $149.95$24.99 a can $40.00
12 $179.95$15.00 a can $219.99$18.33 a can $40.04
18 $264.95$14.72 a can $289.95$16.11 a can $25.00
24 $339.95$14.16 a can $389.95$16.25 a can $50.00
36 $499.95$13.89 a can $544.95$15.14 a can $45.00

Each price links straight to that size and style on Amazon. Per-can figures are our arithmetic from the recorded prices. The highlighted row is the lowest cost per can in the foam-only column.

What the kit charges for the gun and cleaner

Every kit size adds one applicator gun and protective equipment. Sizes up to 18 cans add one foam cleaner; the 24 and 36-can kits add a second. To turn that into money we price the gun at 25 dollars and each cleaner at 10 dollars. That is a working assumption, not a market price we measured, and you can substitute your own figures. It is worth using because the seller’s own 36-can kit prices the same equipment at exactly 45 dollars, which is what the assumption produces.

CansEquipment addedKit chargesAssumed valueDifference
1 1 gun, 1 cleaner, safety gear $30.00 $35.00 $5.00 less
2 1 gun, 1 cleaner, safety gear $40.00 $35.00 $5.00 more
6 1 gun, 1 cleaner, safety gear $40.00 $35.00 $5.00 more
12 1 gun, 1 cleaner, safety gear $40.04 $35.00 $5.04 more
18 1 gun, 1 cleaner, safety gear $25.00 $35.00 $10.00 less
24 1 gun, 2 cleaners, safety gear $50.00 $45.00 $5.00 more
36 1 gun, 2 cleaners, safety gear $45.00 $45.00 exactly equal

The premium column is arithmetic on the recorded prices. The assumed value column is the assumption above. The gap is what the kit charges for its equipment against what the same equipment costs inside the 36-can kit. Safety gear is included in every kit and is not priced here, so the assumed value is the floor rather than the full contents.

The 24-can kit costs more per can than the 18-can kit

At the recorded prices the 18-can kit works out at 16.11 dollars a can and the 24-can kit at 16.25. Buying the larger box is the more expensive way to buy the same foam, by about 14 cents a can, or roughly 3 dollars across the order. Nothing about a bigger box guarantees a lower unit price, which is exactly why we run this arithmetic on every ladder.

The 18-can kit is the cheapest way to get the equipment

Price the gun at 25 dollars and a cleaner at 10, and the 36-can kit charges exactly that, 45 dollars for a gun and two cleaners. Against the same yardstick the 18-can kit charges 25 dollars for a gun and one cleaner that would come to 35, so it hands you 10 dollars of equipment for nothing. The 24-can kit charges 50 dollars for the gun and two cleaners the 36-can kit sells for 45.

If you already own a gun, compare the foam-only boxes

The equipment is only worth paying for once. A second gun and a third cleaner have no value on a job you are repeating, so at that point the foam-only ladder is the only column that matters, and it falls steadily from 19.95 a can at one can to 13.89 at 36.

A two-pack is not cheaper than two single cans

One can was 19.95 and the two-pack was 39.95, which is 19.98 a can. The small packs are a convenience, not a discount.

Amazon states unit prices on two different bases

Some sizes show a price per count and others a price per fluid ounce, so the figures on the page cannot be read down the column. Where the per-fluid-ounce basis is shown, the arithmetic implies about 26.8 fluid ounces per can, which is a volume figure Amazon derives for unit pricing and not a net weight the manufacturer publishes.

Recorded from the Amazon listing on September 7, 2026. We publish a dated snapshot, never a price history, and we do not track or predict price movements. Check the live price before you buy, and confirm the size and style selected in your cart, because each combination is a separate listing.

Listing signals

  • Amazon rating: 4.3 from 601 ratings Platform-reported on the 24-pack kit listing
  • Amazon rating spread: 66% five star, 18% four, 5% three, 3% two, 8% one Platform-reported distribution, not a sample we drew
  • Amazon category rank: #7 in Urethane Adhesives Platform-reported best sellers rank
  • Walmart rating: 4.4 from 23 ratings on the 12-pack Platform-reported on a different pack
  • Pack options on Amazon: 14 listings across 1, 2, 6, 12, 18, 24 and 36 cans, as foam only or as a kit Variation list on the product page
  • First archived capture of the brand site: April 2025 Internet Archive first capture of beestusa.com, which dates the public site and not the company

These are platform-reported figures recorded on the access date, not a review sample we have drawn and not a measurement. A rating summarizes what a platform accepted and weighted. It says nothing about thickness, yield, cure or code suitability. How we weigh ratings and demos: reviews, ads and expansion demos. How we read a fire claim: ASTM E84 and Class A. How coverage units work: coverage and yield.

Each source read on the date shown: BEEST USA, 24 Pack FullStop Spray Foam Insulation Kit, read 2026-09-06 · Amazon listing B0DZJ25N8V, BEEST FullStop 24-pack kit, read 2026-09-06 · Walmart item 18098158810, BEEST FullStop 12-pack kit, read 2026-09-06. Prices sit in the pack table below, each with the date it was read.

As an Amazon Associate I earn from qualifying purchases. That fee never sets the order or the score.

Pack sizes

Choose a pack only after matching the exact product, required volume and included equipment. Larger boxes do not automatically cost less per usable board foot. Check pack identity and bundle contents.

12-Pack Smaller pack option
240 board feet claimed · 12 cans, net weight not published
24-Pack Kit we compare
480 board feet claimed · 24 x 26.8 oz (net, from the can label)
Where to buy - and why

Buyers praise the brand’s named customer service, while the largest review pool sits on Amazon. Either is fine: go official for support, Amazon for the biggest returns safety net.

As an Amazon Associate I earn from qualifying purchases. That fee never sets the order or the score. Official stores pay us nothing, and which seller we point to does not change because of the fee.

Product overview

BEEST describes FullStop as a high-coverage DIY closed-cell kit that expands to seal gaps and adhere to many surfaces. The listing states an R-value of 8.24 at 2 inches and recommends a 2-inch layer applied at 68 to 77 F (20 to 25 C).

Manufacturer-stated features

  • Closed-cell; R-4.12 per inch, stated as R-8.24 at 2 inches - manufacturer claim
  • Moisture-cured, ozone-safe, paintable once cured - manufacturer
  • Adheres to wood, concrete, metal, glass, brick and drywall
  • Manufacturer-recommended 2-inch layer thickness
  • 24-can kit (480 board feet claimed)

Overview synthesized from the brand’s official page and the Amazon listing. Specifications are manufacturer claims, not independently verified.

The 24-pack claims 480 board feet, about a small garage at ~1 inch. Coverage is one of its better-reviewed traits, but still plan under the theoretical figure.

What buyers actually say

Ratings on Amazon

4.2 from 611 ratingsFullStop kit, 24 pack

Read September 8, 2026.

Reviews on the brand’s own shop, and how many carry the verified-purchase label

Few of these carry the verified-purchase label

25 of 225 reviews on beestusa.com are matched to an order in that shop. The other 200 are not.

11%

Few of them carry the label: 25 of the 225 reviews. The store holds the platform’s top authenticity medal, which is a ratio taken over a different set and says nothing about the 225 reviews under this product.

A shop’s own star rating is the number its seller controls most completely. This is how much of it the review platform could match to a real order placed in that shop. Verified means the platform matched the review to an order in that shop. Unverified does not mean false: it can be a buyer who ordered on a marketplace, a review imported from another platform, or one collected outside the shop’s checkout. Which of those applies is not published, so a reader cannot tell. Counted one page at a time on September 12, 2026.

One of the largest and most positive feedback pools, with gun/hardware reliability the main complaint.

Stands out: Coverage and sealing are repeatedly praised on basement rim-joist and crawl-space jobs.

Buyers praise

  • Coverage described as strong for the price
  • Named, responsive customer service on issues
  • Complete kit that first-timers found easy

Buyers complain

  • Reports of the gun leaking or blowing out at a joint
  • Non-returnable frustration when a job gets canceled
  • Occasional late shipping

Buyer tip: Buyers get the best payoff sealing block-to-joist footer gaps and rim joists first.

Amazon showed 4.2 from 611 ratings on September 12, 2026 for the pack this page compares, with 9 percent of them at one star. The lines above are recurring themes across published reviews, weighted toward verified purchases, rather than verbatim quotes. How we read them.

What stands out

  • The largest bought-in-past-month sum among the kits we track: 2,350 across 14 Amazon pack-size listings read September 12, 2026
  • A full thirteen-page safety data sheet with a named supplier and an emergency line
  • Both surface-burning indices are published, in the quick start guide

Open questions

  • No technical data sheet found on any channel we read as of September 12, 2026, and none was sent when we asked
  • R-4.12 an inch by halving the 8.24 at 2 in it prints, among the lowest figures in the set
  • 25 of the 225 reviews on its own store carry the verified-purchase label
  • The gun, cleaner and safety kit are separate zero-priced items, so two packs still ship one gun
  • Where the foam is made is not stated on any channel we read as of October 18, 2026: BEEST calls itself American family-owned, which describes the company, and makes no Made in USA claim

Best for

Buyers who weigh what other people are actually buying and will read the safety page themselves.

Not for

Anyone who wants a technical data sheet, or who is buying on R-value per inch.

All pack sizes & where to buy

PackClaimed coverageAmazonOfficial
12-PackMost chosen 240 bd ft (12 cans, net weight not published) Check price Store
24-PackCompared 480 bd ft (24 x 26.8 oz (net, from the can label)) Check price Store

Amazon links are per-size. Official links open the brand store, where you pick the size. Prices and availability change - always confirm on the retailer.

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How the maker says to use it

FULLSTOP quick start guide BEEST's own instructions, published on its product page. PDF, opens in a new tab. Read 2026-09-12. Open

BEEST FullStop - application demo · YouTube

Videos may include manufacturer-produced footage; shown for application reference, not as independent test results.

Questions and answers

Questions about BEEST FullStop 24-Pack

Answered from this product’s documents and listings, the same records the rest of this page is built from.

Ask your own
  1. How is BEEST FullStop for coverage? From the records

    Coverage and sealing are among its better-reviewed traits on basement rim-joist and crawl-space jobs, though still plan under the theoretical 480 board feet.

  2. What is the most common complaint? From the records

    Gun/hardware reliability - a few buyers report the gun leaking or blowing out at a joint. Customer service is otherwise praised.

  3. Is the kit returnable? From the records

    Some buyers noted non-returnable frustration when a job was canceled, so confirm return terms with the seller before buying more than you need.

  4. Is BEEST spray foam closed cell? From the records

    BEEST calls FullStop a closed-cell kit, and its Amazon listing describes a hybrid instead: a closed-cell outer skin with an open-cell core. Neither channel publishes a closed-cell content figure, a density or a test report, so neither description can be checked against a document, and the R-4.12 an inch it states is among the lowest figures of the kits we track.

  5. Is BEEST spray foam made in the USA? From the records

    BEEST does not say so. Its store sets "AMERICAN OWNED. BUILT TO PERFORM." over "BEEST USA is a family-owned American business," and its Amazon listing heads a bullet "AMERICAN FAMILY-OWNED WITH U.S.-BASED SUPPORT." Both describe the company and its support team, not where the foam is made. None of the pages, listings, safety data sheet or quick start guide we read on October 18, 2026 names a country of manufacture or claims Made in USA. The Amazon listing gives the manufacturer as Petra and lists no country of origin, and the safety data sheet names PETRATOOLS of Carlisle, Pennsylvania as the supplier, which is who sells it rather than where it is made. US customs rules require an imported product to show its country of origin on the article or its container, so the can or the box is the place to check.

  6. How many BEEST store reviews are verified purchases? From the records

    On September 12, 2026 the BEEST store served 225 reviews for FullStop, and 25 of them carried the review platform’s verified-buyer flag, 11%. Verified there means the platform matched the review to an order in that shop. An unverified review is not a false one: a buyer who ordered on Amazon and wrote on the brand site is genuine and unmatched.

Compared side by side

BEEST has a right of reply

Everything on this page is a dated reading of documents that can change. If you make or sell this product, or you have read something here that is wrong, send the document. Every submission is read against the record; where it changes the record, the change is dated on the page, and where it does not, the reply says why. A submission cannot buy a position or remove a finding the documents still support, and what moves a record is written down.

Write to the research desk or copy research@beestsprayfoam.com