Canister and hose systems · Closed cell and open cell

Best Two-Component Spray Foam Kits

Two cylinders, a hose and a gun that mixes the chemicals in the nozzle. This is the only category where open cell foam is actually sold, and the only one where a maker will tell you in print that the yield on the box is a laboratory figure. It also carries the longest safety list on the site. Eight kit families from four makers, each described in its maker's own words, side by side.

Two-component spray produces isocyanate aerosol, and every maker here says so in its own way.

DuPont lists coveralls with no skin exposed, an organic vapor/P100 respirator and chemical-resistant gloves. HandiFoam prints "for professional use only" and names a powered air purifying respirator. Read the exact label and safety data sheet, isolate and ventilate the space, and keep unprotected people and pets out.

Open cell versus closed cell, in product terms

The decision you make before the brand

The building science lives at Spray Foam Guides. Here is what the choice does to the products you can buy, read from the two HandiFoam data sheets, since HandiFoam is the only maker here that documents both.

Closed cell

Density 1.75 lb/ft3 free rise, over 90 percent closed cells (HandiFoam FR)
R-value These are not three versions of one number. HandiFoam FR prints R-6.4 aged 180 days at 75 F, at 1 in, to ASTM C518. Froth-Pak prints R-6.2 per inch as an aged LTTR, long-term thermal resistance, measured at 2 in; LTTR is a reporting protocol for how a foam ages, not one of the four test methods the FTC rule names. Vega Bond says "about R-7" with no method at all. Compare them only if you are willing to compare a 180-day laboratory value with a 15-year projection with a round number.
Fire Class A at 2 in, flame spread 10, smoke 350 (HandiFoam FR); Class A up to 2 in (Froth-Pak)
Vapor 0.9 perm at 1 in, which the HandiFoam FR data sheet itself calls a Class II vapor retarder. It is the only perm rating published by any maker on this page.
Where it wins Rim joists, crawl space walls, foundations, anywhere moisture or a vapor retarder matters, and where the most R per inch of depth is the point
Kits Froth-Pak 200 and 630, HandiFoam FR II-200 and II-600, Vega Bond V200, V400, V600, Stanley F994C

Open cell

Density 0.75 lb/ft3 free rise, 5 percent closed cells (HandiFoam Low Density); 1 lb/ft3 stated by Vega Bond
R-value R-4.3 aged at 1 in to ASTM C518 (HandiFoam); R-4.4 with no method (Vega Bond)
Fire Class B at 4 in, flame spread 50, smoke 400, printed as such (HandiFoam); "Class A" with no indices (Vega Bond)
Sound STC 35, sound transmission class, how much noise the wall stops, in a stud wall with 3 in of foam; NRC 0.70 at 3 in, noise reduction coefficient, how much the surface soaks up (HandiFoam). The only sound figures on any sheet here.
Where it wins Interior walls and ceilings where sound matters, deep cavities where the same dollars buy more thickness, and retrofits by injection
Kits HandiFoam Low Density II-250, II-450, II-1350; Vega Bond Open Cell 320 and 1,100 sq ft

No single can we screened is sold as open cell. Twenty-one straw cans carry the word "insulation" on the label, and every one of them is a gap filler rather than a cavity fill. What none of those makers publishes is a closed-cell content figure, so we cannot tell you what the cell structure of any of them actually is; the one exception in our whole set is a wide-spray can that prints over 80 percent closed cells to ASTM D6226. If the job needs foam sold and documented as open cell, it needs a kit from this page. The building science of the two cell types is at Spray Foam Guides.

The part the fire class does not cover

A Class A result does not let the foam stay bare

Every kit on this page is sold for surfaces inside a building, and the code treats foam plastic on those surfaces as something that has to be covered. The surface-burning class is a separate question from the covering, and passing one does not answer the other.

Thermal barrier, the general rule

The 2021 IRC asks for foam plastic to be separated from the interior of the building by a thermal barrier: 1/2 in gypsum board, 23/32 in wood structural panel, or an assembly tested to the same 15-minute standard. On a basement wall or an interior stud wall, the drywall that finishes the room is that barrier. Section R316.4.

Ignition barrier, in the spaces you crawl into

Attics and crawl spaces entered only to service utilities take an ignition barrier instead, from a list of materials the code gives with the thickness for each. Sections R316.5.3 and R316.5.4. The band joist above a foundation wall is a third case again, with four numeric limits of its own in R316.5.11.

What an evaluation report changes

Section R316.6 lets an assembly go without the prescriptive barrier where it is approved on the basis of an end-use test such as NFPA 286, FM 4880, UL 1040 or UL 1715. HandiFoam is the only maker here that publishes an evaluation report number, ICC-ES ESR-2717, and a report covers only the exact product, thickness, substrate and geometry it names.

Class A is a flame spread and smoke result from ASTM E84 or UL 723 at a stated thickness. It is not an exemption from any of the sections above, and no maker on this page claims that it is. Your jurisdiction adopts an edition of the code and amends it, so the reading that counts is your building official's. Our crawl space, rim joist and basement pages set out which case applies where.

Side by side

Eight kit families, each row in the maker's words

Scroll sideways on a phone. "Not stated" means we looked and the maker does not say. That gap is worth knowing about, so we print it rather than leaving the box empty.

	DuPont Froth-Pak 200	DuPont Froth-Pak 630	DuPont Froth-Pak 12	Stanley F994C SuperCoat Canister Foam	Vega Bond V200, V400, V600 closed cell kits	Vega Bond Open Cell Spray Foam Insulation Kit	HandiFoam FR (HFO) II-200 and II-600	HandiFoam Low Density II-250, II-450, II-1350
Cell type	Closed cell	Closed cell	Closed cell	Closed cell	Closed cell	Open cell	Closed cell	Open cell
Sizes	One kit: ISO (A) and polyol (B) cylinders, Insta-Flo gun, 8 cone and 4 fan nozzles, wrench, petroleum jelly, 9 ft gun hose assembly	One kit with the same contents as the 200 and a 15 ft gun hose assembly; a 30 ft assembly version is sold on Amazon	Small two-component sealant kit with a 3 ft hose, sold in packs of 2, 4 and 12	200 board feet kit and 600 board feet kit, two canisters each	V200 (200 board feet, 9.5 ft hose), V400 (400 board feet), V600 (600 board feet, 15 ft hose); slow-rise V200 SLR and V600 SLR for drill-and-fill; each with gun and hose, gloves, coverall, glasses and nozzles	320 sq ft coverage kit with 10 ft hose; 1,100 sq ft coverage kit	II-200 (201 board feet) and II-600 (601 board feet) disposable kits; refillable systems from 8 to 120 gallons	II-250 (250 board feet), II-450 (450 board feet), II-1350 (1,350 board feet) disposable kits
Yield claim	200 sq ft at 1 in	630 sq ft at 1 in	Not stated on the Amazon listing we read; the frothpak.dupont.com products page lists only the 200 and 630	Up to 200 board feet, or 600, at 1 in	200, 400 or 600 board feet at 1 in	320 or 1,100 sq ft	201 and 601 board feet	250, 450 and 1,350 board feet
How the maker defines the yield	"The theoretical yield has become an industry standard for identifying certain sizes of two-component kits. Theoretical yield calculations are performed in laboratory conditions, without taking into account the loss of blowing agent or the variations in application methods and types."	Same theoretical-yield definition as the 200	None found	"Covers up to" on the retail page; no theoretical-yield definition	"Covers up to" on the store; no definition of the figure	Stated as coverage; thickness not stated on the store	"Yield is based on free-rise density ... Applying foam into a cavity may result in higher in-place densities due to packing effects. These higher densities may result in lower yields."	Free-rise density basis with the same packing caveat as the FR sheet
R-value claim	R-6.2 per inch; 12.2 at 2 in	R-6.2 per inch; 12.2 at 2 in	Not stated	R-6.27 per inch	About R-7 per inch	R-4.4 per inch	R-7.0 initial and R-6.4 aged 180 days at 75 F, both at 1 in	R-4.3 at 1 in, aged 90 days at 140 F
Reading the R-value	Two published results at two thicknesses. Read each at the thickness it names; do not multiply the per-inch figure to get the 2 in one, because the aging basis is measured at 2 in.	Two published results at two thicknesses, on the same aged basis as the 200 kit.	No R-value is published for this kit at all. The Froth-Pak 200 and 630 figures belong to a different product and do not transfer to it.	One per-inch figure with no test method and no aging basis behind it, so there is nothing to check it against and nothing that says how it would behave at another thickness.	An approximate per-inch figure, given as “nearly” and “approximately”, with no method. Read it as a round number rather than a measurement.	One per-inch figure from a store page, with no thickness, method or aging basis attached.	Two results at the same thickness, one initial and one aged 180 days at 75 F. The aged figure is the one to plan with, and the pair is here because the sheet prints both.	One aged figure at one thickness. Note the aging condition, 90 days at 140 F, is not the condition on the FR sheet, so the two aged numbers are not measured the same way.
R-value basis	"R-value per inch: aged LTTR measured at 2-in. thick"	"Aged LTTR measured at 2-in. thick"	None found	Stated on the retail page with no method or aging basis	"Nearly R-7" and "approximately R-7" on the store, no method or aging basis	Store statement; no method or aging basis	ASTM C518, initial and aged values both printed	ASTM C518, aged value printed
Fire claim	Class A fire rated up to 2 in thick; no index values on the page	Class A fire rated up to 2 in thick; no index values on the page	Not stated on the listing	Class A, ASTM E84 "certified for minimal smoke and fire spread"; no indices. Nothing is certified to ASTM E84: it is a test method that returns two numbers, and neither is printed here	"ASTM E84 Approved Class A Building Material (Lowest Fire Spread Rate and Minimal Smoke Production)"; no indices. A product is not approved to ASTM E84, and Class A is not the lowest flame spread rate, it is a band that runs from 0 to 25	"ASTM E84 Class A Rated, low flame spread and smoke"; no indices. The class is stated without the two numbers that produce it	Class A: ASTM E84 flame spread 10, smoke developed 350, tested at 2 in; CAN/ULC-S102 at 4 in beads FSI 15, SDI 75; ICC-ES ESR-2717	ASTM E84 flame spread 50, smoke developed 400, tested at 4 in: Class 2 (B), stated as such
Density	Not stated	Not stated	Not stated	Not stated	Not stated	1 lb/ft3, stated as higher than "standard half-pound open-cell foam"	1.75 lb/ft3 free rise, 2.10 in place; closed-cell content over 90 percent	0.75 lb/ft3 free rise, 1.12 in place; closed-cell content 5 percent
Cure	Tack-free in about 30 seconds; 1-hour room re-entry with proper ventilation	Tack-free in about 30 seconds; 1-hour room re-entry with proper ventilation	Not stated on the listing	Tack-free in about 30 seconds; fully cured within 24 hours	Slow-rise version tack-free in about 3 minutes; fast-rise not stated	Not stated	Tack-free 15 to 30 seconds	Tack-free 30 to 45 seconds
Hose	9 ft (200); 15 ft (630); 30 ft assembly sold separately	15 ft; 30 ft version listed on Amazon	3 ft	Gun hose assembly included; 10 ft and 15 ft replacement assemblies sold separately at $89.99	9.5 ft (V200); 15 ft (V600); 10 ft and 15 ft assemblies sold separately	10 ft with the 320 kit	Disposable kit hose; length not stated on the sheet	Disposable kit hose; length not stated on the sheet
Reuse and shelf life	Reusable for 30 days after opening; shelf life 24 months	Reusable for 30 days after opening; shelf life 24 months	Not stated	Usable for up to 30 days after first use	Not stated	Not stated	Shelf life 12 months; reuse window not stated on the sheet	Shelf life 12 months
PPE the maker names	Protective clothing or impermeable coveralls with no skin exposed, goggles or safety glasses, respirator with organic vapor/P100 cartridge, chemical-resistant gloves (nitrile, butyl, neoprene or PVC)	As the 200: coveralls, eye protection, organic vapor/P100 respirator, chemical-resistant gloves	Not stated on the listing, and we found no label or safety data sheet for this kit. We are not transferring the 200 and 630 list to it: protective equipment follows the exact product’s own label and SDS.	Not listed on the retail page	Gloves, coverall and safety glasses included in the kit; the store also sells half-mask respirators and organic vapor/P100 cartridges separately	Not stated on the open cell page	"Certified respiratory protection or a powered air purifying respirator (PAPR)," glasses with side shields or goggles, nitrile gloves, protective clothing; "FOR PROFESSIONAL USE ONLY"	As the FR sheet: certified respiratory protection or PAPR, eye protection, nitrile gloves, protective clothing; professional use only
Who the maker says it is for	"The all-in-one, self-contained, disposable kit for professional contractors"	"Particularly well-suited for bigger applications such as larger renovation projects or cold storage insulation"	Sealant use, not insulation, by its name	"Designed primarily for professional contractors"	Homeowners and contractors, by the store copy	"DIY users and contractors alike"	"For professional use only," printed on the sheet	"For professional use only"
Documents	PAGE	PAGE	None found	PAGE	PAGE	PAGE	TDS, Rev 07/2024-9 · SDS, November 9, 2022 · SDS, July 25, 2022 · MANUAL, Rev 11/2024	TDS, Rev 6/2024 · SDS, September 2018 · SDS, February 2018
Amazon, September 7, 2026	200 kit, 9 ft hose: $409.00, 3.9 rating from 19 ratings	630 kit, 15 ft hose: $989.00, 4.4 rating from 55 ratings, 100+ bought in past month	12 kit, pack of 2 on September 8 (pack of 4 in the September 7 title): $217.49, 3.6 rating from 4 ratings	No Amazon listing found	No Amazon listing found	Open cell kit, with hose and gun: $399.99, no rating from 0 ratings	Handi Foam E84 Class 1 low pressure kit: no price, 3.3 rating from 16 ratings	Open cell kit, pack of 4: $2102.79, 3.5 rating from 2 ratings
Brand store	Not read	Not read	Not read	$349.99 for the 200 kit and $899.95 for the 600 kit on the retail store, both out of stock on September 8, 2026	V200 $399 and V600 $799.99, both out of stock with "more stock September 14th"; V400 $549.99 out of stock; V200 SLR $429.99 in stock, on September 8, 2026	$399.99 for the 320 sq ft kit and $799.99 for the 1,100 sq ft kit, both in stock on September 8, 2026	Not read	Not read
Price per stated unit	$2.04 per stated square foot, from the Amazon listing we track for this kit	$1.57 per stated square foot, from the Amazon listing we track for this kit	No figure: the listing is a multi-kit pack, so its price does not divide by one kit yield	No figure: this kit has no Amazon listing, so there is no price to divide	No figure: this kit has no Amazon listing, so there is no price to divide	No figure: the listing is a multi-kit pack, so its price does not divide by one kit yield	No figure: the listing carries no price	No figure: the listing is a multi-kit pack, so its price does not divide by one kit yield

The records

What each maker claims, what it documents, and what we make of it

Closed cell

DuPont Froth-Pak 200 Foam System

One kit: ISO (A) and polyol (B) cylinders, Insta-Flo gun, 8 cone and 4 fan nozzles, wrench, petroleum jelly, 9 ft gun hose assembly

See it on Amazon

"Froth-Pak 200 Insulation and Sealant covers 200 square feet at 1 inch thickness. Provides an R-value of 6.2 at 1 inch thick and 12.2 at 2 inches thick. 30-second cure time and 1-hour room reentry."
frothpak.dupont.com product page, read September 8, 2026

The benchmark of the category and the only maker in it that defines, in print, what its yield number is: a laboratory figure that ignores blowing-agent loss and application variation. Its R-value is stated as an aged LTTR measured at 2 in, so the basis is named, which is more than most of this set does. Which of the four test methods the FTC rule accepts produced it is not stated, so that is the next question rather than a settled point. The page names the PPE a user needs in one list. What it does not give is a data sheet link or the E84 indices behind "Class A."

Documents on file

PAGEFroth-Pak 200 Foam System product pageThe page states yield, R-value with its aging basis, fire class, cure and PPE. SDS is offered through the DuPont resource center; no technical data sheet is linked from the page.

Open questions

No TDS linked from the product page; E84 indices not published there.
Nineteen ratings on Amazon for the 200 kit against fifty-five for the 630.

Other listings, September 7, 2026

200 kit, 9 ft hose, $409.00, 19 ratings
200 kit, pack of 7, $3080.00, 19 ratingsShares the review pool of the single kit

Closed cell

DuPont Froth-Pak 630 Foam System

One kit with the same contents as the 200 and a 15 ft gun hose assembly; a 30 ft assembly version is sold on Amazon

See it on Amazon

"Froth-Pak 630 Insulation and Sealant covers 630 square feet at 1 inch thickness. Provides an R-value of 6.2 at 1 inch thick and 12.2 at 2 inches thick."
frothpak.dupont.com product page, read September 8, 2026

More people buy this two-component kit on Amazon than any other one we track: fifty-five ratings and a "100+ bought in past month" badge on the 15 ft version. Per stated square foot it is cheaper than the 200: $989 for 630 sq ft against $409 for 200 sq ft, about $1.57 against $2.05 per theoretical square foot. Same documents, same gaps.

Documents on file

PAGEFroth-Pak 630 Foam System product page

Open questions

No TDS linked; E84 indices not published on the page.

Other listings, September 7, 2026

630 kit, 15 ft hose, $989.00, 55 ratings
630 kit, 30 ft hose, $1069.00, 5 ratings
630 kit, 15 ft hose, pack of 3, $2945.00, 3 ratings

Closed cell, not stated

DuPont Froth-Pak 12 Spray Foam Sealant Kit

Small two-component sealant kit with a 3 ft hose, sold in packs of 2, 4 and 12

DuPont does not state a cell type for this kit. We have grouped it with the closed-cell Froth-Pak systems because it is the same product line, and that placement is our inference, not a published figure.

See it on Amazon

"Froth-Pak 12 Spray Foam Sealant Kit, 3 ft Hose"
Amazon listing title, read September 8, 2026

DuPont sells this one on Amazon and does not list it on its own products page. Two listings, six ratings between them, a pack size that changed overnight and a rating that doubled. We list it because the intake caught it; there is nothing to check it against.

Documents on file

Nothing on file.

Open questions

Not on frothpak.dupont.com; no document found.
Pack size and rating on B096N4S4VV changed between September 7 and 8.

Other listings, September 7, 2026

12 kit, pack of 2 on September 8 (pack of 4 in the September 7 title), $217.49, 4 ratingsRating read 1.6 on September 7 and 3.6 on September 8
12 kit, pack of 12, $607.79, 2 ratings

Closed cell

Stanley F994C SuperCoat Canister Foam 200 and 600

200 board feet kit and 600 board feet kit, two canisters each

No Amazon listing found

"Class-A fire rated and boasting an R-value of 6.27 per inch ... covers up to 200 board feet (at 1-inch thickness)."
oneclickdiy.com retail page, read September 8, 2026

The canister sibling of a kit we rate, with the retail copy of a finished product and the paper of an unreleased one: a 6.27 R-value with no method behind it, a Class A claim with no indices, no data sheet on a documents page that has one for every other Stanley foam, no Amazon listing, and both sizes out of stock. The brand’s own product page for the canister system carries the single-can SuperCoat text, describing a "one component" foam that yields "up to 20 board feet" per layer, which is the F990P can, not a two-canister kit. It stays in the table so the comparison is complete. It cannot be recommended on what is published.

Documents on file

PAGEStanley F994C SuperCoat Canister Foam, stanleychem.comProduct page exists; the stanleychem.com documents page lists no F994C technical or safety data sheet on September 8, 2026, although it lists both for every other Stanley foam we track.

Open questions

No TDS or SDS on stanleychem.com.
The stanleychem.com F994C page describes a one-component can; the two-component copy exists only on the retail store.
No Amazon listing; only replacement hoses are sold there.
Both kit sizes out of stock on the retail store.

Closed cell

Vega Bond V200, V400 and V600 Closed Cell Kits

V200 (200 board feet, 9.5 ft hose), V400 (400 board feet), V600 (600 board feet, 15 ft hose); slow-rise V200 SLR and V600 SLR for drill-and-fill; each with gun and hose, gloves, coverall, glasses and nozzles

No Amazon listing found

"R-Value R-7 per inch. ASTM E84 Approved Class A Building Material ... Stops Mold and Moisture. Completely seals out unwanted air leaks."
vbinsulation.com product pages, read September 8, 2026

Nobody else covers this many sizes: closed and open cell, fast and slow rise. It is also the only maker here that ships PPE in the box and sells respirator cartridges on the same store. Every performance figure is a store statement: R-7 with no method, Class A with no indices, board feet with no definition. No sheet, no SDS, and no Amazon listing for the kits themselves; only the nozzles and hoses are on Amazon.

Documents on file

PAGEVega Bond V600 Closed Cell Spray Foam Fast Rise 600 Board Feet KitNo data sheet or safety data sheet linked from any Vega Bond product page on September 8, 2026.

Open questions

No TDS or SDS published.
Kits not found on Amazon; accessories only.
V200 and V600 out of stock on September 8.

Open cell

Vega Bond Open Cell Spray Foam Insulation Kit

320 sq ft coverage kit with 10 ft hose; 1,100 sq ft coverage kit

See it on Amazon

"Vega Bond features a 1 lb/ft3 density, providing stronger sound absorption and improved thermal performance, with an R-Value of 4.4 per inch ... Acts as an air barrier at 2 inches."
vbinsulation.com product page, read September 8, 2026

One of two open-cell kits a US buyer can order, and the one that states a density and an air-barrier thickness. The R-4.4 figure is close to what HandiFoam prints from a named ASTM test for its lower-density open cell, which is worth noticing; Vega Bond gives no method. Coverage is stated without a thickness, so the two kit sizes cannot be turned into board feet from the page alone.

Documents on file

PAGEVega Bond Open Cell Spray Foam Insulation KitNo data sheet linked.

Open questions

Coverage stated without thickness.
No document of any kind.

Closed cell

HandiFoam FR (HFO) II-200 and II-600

II-200 (201 board feet) and II-600 (601 board feet) disposable kits; refillable systems from 8 to 120 gallons

See it on Amazon

"Low pressure, medium density, two-component spray polyurethane foam ... Conforms to the requirements of ASTM E84 as a Class 1 (A) system."
HandiFoam technical data sheet TD052, rev. 07/2024-9

The most completely documented product in this entire category, and the only one that prints both an initial and an aged R-value with the test named, both surface-burning indices with the tested thickness, a code evaluation report number and a yield definition that explains why in-place foam yields less. It also says, in capitals, that it is for professional use only, and it names a PAPR. That is the honest version of what a two-component kit is.

Documents on file

TDSHandiFoam FR (HFO) technical data sheet TD052 · Rev 07/2024-9
SDSHandiFoam HFO FR A-side SDS SD063A · November 9, 2022
SDSHandiFoam HFO FR B-side SDS SD063B · July 25, 2022
MANUALDisposable kit operating instructions A16600 · Rev 11/2024

Open questions

The one Amazon listing has 16 ratings and a title that does not say which kit it is.
Hose length and reuse window are not on the sheet.

Open cell

HandiFoam Low Density (open cell) II-250, II-450 and II-1350

II-250 (250 board feet), II-450 (450 board feet), II-1350 (1,350 board feet) disposable kits

See it on Amazon

"Low pressure, low density, two-component spray polyurethane foam. Designed to fill and seal various size voids, deaden sound or reduce vibration." STC 35 and NRC 0.70 at 3 in.
HandiFoam technical data sheet A16531, rev. 6/2024

The only open-cell product in the category with a data sheet, and the sheet is candid where others are not: the fire result is a Class B at 4 in, printed as such, the R-value is aged, and the sound numbers that sell open cell, STC 35 and NRC 0.70, are given with the assembly they were measured in. A buyer who reads this sheet and the FR sheet together has the whole open-versus-closed decision in two pages.

Documents on file

TDSHandiFoam Low Density Disposable technical data sheet A16531 · Rev 6/2024
SDSLow Density B-side SDS A16180B · September 2018
SDSTwo-component A-side SDS A16178A · February 2018

Open questions

Only one Amazon listing, a four-pack at $2,102.79 with two ratings.
Hose length not on the sheet.

What matters before the headline number

Four things that decide whether the yield on the box reaches the wall

Mix ratio

Off-ratio foam stays soft, shrinks, smells or fails to cure. The Froth-Pak operating instructions tell you how to check: the gun ports must show bare aluminum, and a nozzle that has sat idle for more than 30 seconds is replaced rather than reused.

Chemical temperature

The Froth-Pak instructions ask for tank contents at 75 F or warmer. The HandiFoam operating instructions ask for core chemical at 75 to 85 F. Both makers warn that output drops as the chemical gets colder, which is the most common reason a kit runs out early.

Yield is theoretical

DuPont and HandiFoam both say it: the number is a laboratory figure, and in-place density, packing and blowing-agent loss reduce it. Plan on less.

Controls are part of the product

PPE, isolation, ventilation, re-entry and re-occupancy limits come from the exact product's label and safety data sheet, and from local requirements. Only one number of this kind appears anywhere on this page: DuPont's one-hour room re-entry with proper ventilation. That is a figure for a protected applicator. No maker here publishes a figure for when unprotected people can move back in, so do not read the one-hour line as that number.

Questions

Two-component kits, answered from the records above

What is a two-component spray foam kit?

Two pressurized cylinders, an A side (isocyanate) and a B side (polyol), joined by hoses to a gun where they mix in a disposable nozzle and react into foam within seconds. The chemistry happens as you spray, so mix ratio, chemical temperature and nozzle condition decide the result. Every maker on this page ships the kit with cylinders, hose, gun and nozzles; some add gloves and a coverall.

Is there a single-can open cell foam?

No. Across the 496 products we screened in September 2026, every open cell product is a two-component or hose system: Vega Bond and HandiFoam kits, an injection retrofill kit, and nozzles. Open cell versus closed cell is a decision you make on this page, not on the single-can kit page.

Which kit publishes the most complete numbers?

HandiFoam. Its FR (HFO) sheet prints an initial and an aged R-value to ASTM C518, both E84 indices with the tested thickness, an ICC-ES evaluation report number and a yield definition. Its Low Density sheet does the same for open cell and states a Class B fire result plainly. DuPont defines its theoretical yield and states an aged R-value on its web page without a linked sheet. Vega Bond and Stanley publish store statements only.

Why does the open cell kit publish a lower R-value and a different fire class?

Read them as separate published results rather than one cause. On HandiFoam’s two sheets the low-density foam cures at 0.75 lb per cubic foot with 5 percent closed cells and prints R-4.3 aged at 1 in and an E84 result of 50 and 400 at 4 in, which its sheet calls Class 2 (B). The FR foam cures at 1.75 lb per cubic foot with over 90 percent closed cells and prints R-6.4 aged at 1 in and 10 and 350 at 2 in, Class 1 (A). Density, formulation, blowing agent and the tested thickness all differ between them, so no single one of those explains the gap. The low-density sheet is also the only one here that prints sound figures.

How much does a two-component kit cost per board foot?

Only where the listing and the kit size line up. Froth-Pak 630 is $989 for a stated 630 sq ft at 1 in, about $1.57; Froth-Pak 200 is $409 for 200 sq ft, about $2.04. Three kits give no figure, for three different reasons. The HandiFoam FR listing carries no price. The HandiFoam Low Density listing is a pack of four whose title does not say which system size is inside. The Vega Bond closed-cell kits and the Stanley canister have no Amazon listing at all, so only their brand-store prices are on this page, quoted as text. The Vega Bond open-cell kit does have a listing at $399.99. Every one of these yields is the maker’s theoretical figure, and two of the four makers say in print that it is a laboratory number.

Are two-component kits for DIY use?

The makers answer differently. DuPont calls Froth-Pak a kit "for professional contractors." HandiFoam prints "FOR PROFESSIONAL USE ONLY" and names a powered air purifying respirator. Vega Bond addresses "DIY users and contractors alike" and ships gloves, coverall and glasses. Stanley says "primarily for professional contractors." Read the PPE list on this page before deciding. Two clocks matter here and they are not the same one: how soon a worker in full gear can go back in, and how soon everybody else can.

Read before you buy

The guides this page leans on

We have no relationship with any maker on this page and earn nothing from these links today. Nothing here was sprayed or tested by us. Every figure in the comparison table names the document it came from, and the dated sources for each kit are listed in its record above.

Continue to product researchSee the provisional order and evidence limits for spray foam insulation kits.

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