Great Stuff Wide Spray
Wide-pattern can, 18 oz, fan and cone nozzles
The original wide-pattern can: 6 in wide, Class A up to 6 in by 1 in per Intertek, not for cavity fill; SDS only.
- Dated data sheet
- Claim checkable
- Brand-channel seller
- 100+ ratings
Three products, side by side · Listings read September 8, 2026
Best Wide Spray Foam
Wide spray is a three-product category. A fan or wide-angle nozzle turns a one-component can into a small-area surface spray: seams, rim joists, the last pass a narrow tip leaves behind. The three are presented side by side because with three products a comparison says more than a rank, and because their fire and thermal claims differ in kind, not only in size.
A wide pattern is a small job done without a gun, or the finishing pass after a kit. It is not a cavity fill.
Great Stuff says its can is not approved for full cavity fill and that filling an enclosed void can accumulate flammable vapor. DAP recommends one layer for air sealing and two for a full cavity, at 1/2 in wet per pass. Kraken recommends a total of 2 in and includes ThermaFoam free with its larger insulation kits, which is the complementary role stated by the seller itself.
The three
No numbered order. Three cans, each claim in its own words.
Presented in the order the format grew: the brand that defined it, the one that undercuts it per ounce, the one that publishes the number the others do not.
Kraken Bond ThermaFoam Wide Spray
Wide-pattern can, 16 oz
Cheapest per ounce, dated sheet with both E84 indices and 10 board ft per can; R-5.66 from a conductivity method with no aging basis.
- Dated data sheet
- Claim checkable
- Brand-channel seller
- 100+ ratings
DAP Wall & Cavity Foam
Wide-pattern can, 20 oz, adjustable horizontal or vertical nozzle
The only can in the tracked set with an aged, method-named R-value, 4.1 at 1 in to ASTM C518; 3.1 from 418 ratings.
- Dated data sheet
- Claim checkable
- Brand-channel seller
- 100+ ratings
Side by side
What each one states, and what each one leaves out
Prices are the September 7, 2026 snapshot. Every cell is the maker's statement or our note that there is none.
| Great Stuff Wide Spray | Kraken Bond ThermaFoam Wide Spray | DAP Wall & Cavity Foam | |
|---|---|---|---|
| Can and pack on Amazon | 12 x 18 oz, $219.49 | 12 x 16 oz, $119.99 | 1 x 20 oz, $21.60 |
| Price per ounce, cheapest bare pack | $1.02 per oz (12 x 18 oz, $219.49) | $0.62 per oz (12 x 16 oz, $119.99) | $1.08 per oz (1 x 20 oz, $21.60) |
| Pattern or use limit | Up to 6 in wide; not for full cavity fill | Recommended total thickness 2 in; wide gaps, cavities and joints | One layer for air sealing, two for a full cavity, 1/2 in wet per pass; interior only |
| Fire claim, as we read it | Class A up to 6 in wide by 1 in thick, Intertek classified; no index values on the page | Class A, FSI 15 or less and SDI 40 or less to ASTM E84; no tested thickness or laboratory named | ASTM E84 flame spread 10, smoke developed 450, tested at 2.75 in; UL classified foamed plastic |
| R-value claim and its basis | None published | R-5.66 per inch, stated alongside 0.025 W/m.K to DIN 52612. Three of the four methods the FTC rule names at 16 CFR 460.5 are conductivity measurements, so the method type is not the problem: DIN 52612 is not one of the four, and no aging basis is given. The 0.025 figure taken on its own works out at R-5.77 per inch, so the sheet is printing two numbers that do not quite match | Aged R-4.1 at 1 in to ASTM C518, the only aged, method-named R-value in the tracked set |
| Yield claim | Up to 6 in wide; two 18 oz cans cover up to 60 linear ft at a 4 in band That is a coverage figure with no thickness attached, so it cannot be compared with the board-foot claims in the other two columns. | 10 board ft at 1 in per 16 oz can; recommended total thickness 2 in | Up to 11 board ft per can, theoretical; foam expands up to 3x, printed on the sheet as ASTM C1643. We cannot match that designation to an expansion or yield method; C1536 is the aerosol foam yield standard |
| Working range and cure | No working temperature is published for this can; one-time use, and a partly used can may restart with a new tip within 24 h | No working temperature is printed on this sheet, though the sibling Kraken cans give one; tack-free 5 plus or minus 2 min, cutting 40 min or less to ASTM C1620 | Application 40 to 120 F on the data sheet; tack-free 7 to 12 min |
| Documents | SDS · PAGE | TDS, 01.22.2026 rev.2 · PAGE | TDS · PAGE |
| Amazon rating, September 8 | 4 from 12 ratings | 3.9 from 29 ratings | 3.1 from 418 ratings |
| Seller of record | DuPont, the brand owner. | Kraken Bond. | DAP Products Inc. |
Desk notes
What we make of each, and what is still open
Great Stuff Wide Spray
"Coats and air-seals seams, joints, large gaps, and irregular surfaces (up to 6 in wide)." "Class-A Fire Rated up to 6 in wide by 1 in thick. Intertek Classified." "Not approved for full cavity fill."
The brand that defined the format, and the one whose page says most clearly what a wide-spray can is not: not a cavity fill. Its fire claim is the only one of the three that names both a tested extent and a certifier. It is sold by DuPont on Amazon as a 12-pack of 18 oz cans. The per-ounce figures in the table below are computed from those listings rather than typed in here, so they cannot drift away from the prices we recorded.
- No data sheet; the coverage figure is a page statement.
- Twelve ratings on the Amazon 12-pack.
Great Stuff Wide Spray, SDS 000001155708Great Stuff Wide Spray product page
Kraken Bond ThermaFoam Wide Spray
"R-Value 5.66 (per inch thickness)." "Fire Rating Class A (FSI ≤ 15, SDI ≤ 40) (ASTM E84)." "Yield 10 board feet at 1 inch." "Recommended total thickness: 2 in."
The cheapest of the three per ounce, $119.99 for twelve 16 oz cans against $219.49 for twelve 18 oz cans of Great Stuff, and the only one with a dated data sheet. The sheet prints both E84 indices, which Great Stuff does not, and omits the tested thickness, which Great Stuff states. Its R-value comes from a German conductivity method with no aging basis stated. DAP publishes an aged figure to a US method for its own can and it is 27.6 percent lower, which is a difference between two products and two methods rather than a measurement of aging. Kraken has been asked which method and aging basis stands behind its number.
- No tested thickness or laboratory for the E84 result.
- R-value method and aging basis under query with the brand.
Kraken FS113 ThermaFoam Wide Spray TDS, 01.22.2026 rev.2Kraken Bond product page
DAP Wall & Cavity Foam
"Broadcast sprays like 2-component foam while air sealing and insulating." "ASTM C518 Aged R-Value 4.1 at 1 in." "ASTM E84 Surface Burning Characteristics (Flame/Smoke) 10/450 at 2.75 in." Interior use only.
The one can in the whole tracked set that states an R-value the way the FTC rule asks: a named ASTM method, a thickness and an aging basis, R-4.1 at 1 in aged. That is worth more than the number itself. Its E84 result carries a smoke-developed index of 450 at 2.75 in, which is the Class A ceiling, and it says so. The rating is the weakest of the three, 3.1 from 418, and the coverage guide on this site uses this product as the worked example of what an honest thermal claim looks like. The listing is DAP’s own.
- Sheet has no revision date.
- Amazon rating of 3.1 from 418 is the lowest of the three wide-spray cans; the pattern of complaints has not been read yet.
Where it fits
Two true framings at once
Small jobs without a gun
A rim joist bay, a seam, an awkward corner, a shed wall. The can carries its own nozzle, there is nothing to clean, and the cost of a full kit is not justified. All three makers name this use.
The finishing pass after a kit
A narrow gun tip leaves edges and thin spots. A wide pattern covers them. Kraken Bond includes ThermaFoam free with its FastCoat kits of 18 cans and up, which is this role stated by a seller rather than by us.
Not a cavity fill, not a wall system
Great Stuff says its can is not approved for full cavity fill. DAP allows two layers. Neither is a substitute for a kit sized in board feet, and the three weak ratings suggest some buyers expected one.
Not listed, and why
Products we know of that are not on this page
- Stanley F995 Wide Foam has a data sheet on stanleychem.com that claims R-5.66 per inch and is not yet sold in the US; it stays out of prices and comparison until it is.
Questions
Wide spray foam, answered from the records above
Which wide-spray can has the strongest fire documentation?
Each states something the others do not. Great Stuff names a tested extent, 6 in wide by 1 in thick, and its certifier, Intertek, without indices. Kraken Bond prints both indices, FSI 15 or less and SDI 40 or less, without a thickness or laboratory. DAP prints both indices and the thickness, 10 and 450 at 2.75 in, and its 450 sits at the Class A ceiling for smoke.
Why is DAP’s R-value lower than Kraken’s?
The two numbers are not comparable, which is the answer. DAP states R-4.1 at 1 in as an aged value to ASTM C518, one of the four methods the FTC R-value rule accepts. Kraken states R-5.66 per inch from a DIN 52612 conductivity measurement with no aging basis stated. Different products, different methods, different conditioning: 4.1 is 27.6 percent below 5.66, and none of that gap can be assigned to aging alone without matching product, thickness and method. What it does show is that an aged, method-named figure and an unaged conductivity figure are not the same kind of number.
Which is cheapest?
Per ounce, Kraken Bond ThermaFoam: $119.99 for twelve 16 oz cans on September 7, against $219.49 for twelve 18 oz cans of Great Stuff. DAP sells a single 20 oz can at $21.60.
Why do all three have weak ratings?
DAP 3.1 from 418, Kraken 3.9 from 29, Great Stuff 4.0 from 12, against 4.0 to 4.3 for the single-can insulation kits we rate. We have not read the complaint patterns yet, so we do not know why. It is the open question on this page rather than a finding.
Read before you buy
The guides this page leans on
- Spray foam R-value: the DAP worked example of an aged, method-named claim
- ASTM E84 Class A: what the rating proves
We have no relationship with any brand on this page and earn nothing from these links today. Nothing here was applied or tested by us; every figure names its source.
Continue to product researchSee the provisional order and evidence limits for spray foam insulation kits.
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