Gaps & Cracks · Documents read 2026-09-08
Akfix 805 Gap Filler
The second-biggest seller here, 400+ bought a month, with a data sheet link that returns a 404.
2 of four things confirmed
These are the four things we could check for a gaps & cracks can, and nothing else. Not a performance score: nothing on this page was applied or tested by us. How the gaps & cracks page is ordered.
- Brand data sheetwe looked on the brand store and the marketplace listings and found no data sheet
- Claim checkableNo figure for gap size, expansion or yield anywhere we could read, and the data sheet link is broken.
- Brand-channel sellerSold by Wios Global Trade LLC, which carries only the Akfix line in our intake.
- 100 or more ratings571 ratings on the anchor listing
Before you decide
Akfix 805 Gap Filler, Straw, 12 oz and 25.3 oz
- Format
- Straw, 12 oz and 25.3 oz
- Job
- Gaps & Cracks
- Documents on file
- 2, last read 2026-09-08
- Claim checkable
- Not on the documents we hold
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.
Report a product error The claim What the documents state Documents Sizes and prices Right of reply
The claim, in the seller's words
"A single-component, moisture-curing and self-expanding aerosol polyurethane foam ... designed for easy dispensing through the straw adapter." No gap size, yield or expansion figure is given. What the documents state
| Sizes | 12 oz and 25.3 oz cans; 1 to 48 packs on the brand storeBrand store |
|---|---|
| Adhesion | Most building materials except polyethylene, Teflon, silicone and oily surfacesBrand store |
| Finish | Mold-proof, water-proof, over-paintable; cured foam can be trimmed and sandedBrand store |
Our reading
The second-biggest gap filler seller in the intake after Loctite: 508 ratings on the 2 x 12 oz listing and a "400+ bought in past month" badge on September 8. Its evidence is the weakest of the major brands here, not because Akfix publishes bad numbers but because the data sheet button leads nowhere. Akfix has published detailed sheets for its other lines, so this looks like a broken link rather than a policy.
Still open
- Data sheet link broken on the brand store on September 8 and again on September 14, 2026; on the re-check list.
- The 12-pack of 25.3 oz cans (B0CQ4QRRVN) is the only pack above two cans in the intake.
Documents on file
- TDS 805 Big Gap Filler PU Foam, TDS link on the brand store no date or revision printed read 2026-09-08 The link on the product page returned a 404 page on September 8, 2026 and again on September 14, 2026, when the store still linked the same file path. No copy is on file. Recorded as absent until it resolves.
- PAGE Akfix store product page no date or revision printed read 2026-09-08
Sizes and prices, latest read October 29, 2026
Each displayed price is what that listing showed on the date printed in its row; ratings were read October 29, 2026. A pack with no price is one where the listing showed none, where the figure contradicted another variant, or where its last successful read passed the freshness window. Prices are snapshots, each dated where it appears, not live figures, so check the seller before you pay.
| Pack | Price | Per ounce | Demand | |
|---|---|---|---|---|
| 2 x 12 oz | price withheld read Oct 29, 2026 | not comparable | 200+ bought | Check price |
| 2 x 25.3 oz | no price shown read Oct 29, 2026 | not comparable | not shown | Check price |
| 12 x 25.3 oz | no price shown read Oct 29, 2026 | not comparable | not shown | Check price |
As an Amazon Associate I earn from qualifying purchases. That fee never sets the order or the score.
Jobs where a can from this category is part of the answer
These pages name the category rather than this particular can. Each one sets out the constraint that decides the product for that assembly, the code section that applies, a worked quantity example, and where foam is the wrong answer.
- Attics As gaps and cracks foam. Top plates, wire holes, plumbing chases and the hatch perimeter are gap-filler work; Loctite Tite Foam and Kraken Bond Gaps & Cracks carry the clearest sheets.
- Rim joists As gaps and cracks foam. For the sill-to-foundation joint and the wire and pipe holes through the rim, before the surface foam goes on.
- Sheds As gaps and cracks foam. Sheds leak at the sill and the corners; the sealant goes on first.
- Metal Buildings As gaps and cracks foam. Every screw line, conduit, hydrant and vent through a steel skin is an air path. Sealing those is cheap and it is the part of the job that pays back fastest.
- Pole Barns As gaps and cracks foam. Every screw line, hydrant, conduit and vent through the skin is an air path, and in a barn the eave and the sliding door jambs are the big ones. Sealing those is cheap and it pays back fastest.
- Sound Control As gaps and cracks foam. The part of this job that reliably works. Outlet boxes on a shared wall, the gap where a pipe or duct crosses between rooms, the perimeter of a partition at the top plate. Cheap, checkable, and it removes the paths that make an assembly rating meaningless.
Compared side by side
- Akfix 805 vs Kraken BondAkfix 805 Gap Filler against Kraken Bond Gaps & Cracks in the packs both brands sell, with what each maker publishes about the can: yield, density, working range, fire wording and the price on the same day.
- Fire block foam vs regular foamEach brand’s fire block can set against the same brand’s gap filler, from their own sheets: surface-burning results, German classes, ICC-ES listings, fireblocking evaluations and the price per ounce in the same pack.
Others on the gaps & cracks page
All 19 gaps & cracks records
Questions and answers
Questions about Akfix 805 Gap Filler
Answered from this product’s documents and listings, the same records the rest of this page is built from.
-
Does Akfix publish a data sheet for the 805 Gap Filler? From the records
We looked on the brand store and the marketplace listings and found no data sheet.
-
Can the gaps & cracks claim on this can be checked? From the records
No figure for gap size, expansion or yield anywhere we could read, and the data sheet link is broken.
-
Who sells the Akfix 805 Gap Filler on Amazon? From the records
Sold by Wios Global Trade LLC, which carries only the Akfix line in our intake.
We have not sprayed or tested this product. Every figure above names the document or listing it came from, and where a maker publishes nothing the record says so. The photograph is the maker's own product shot where one is published; this one came from the brand store. Read the rating method and our editorial policy.
Akfix 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