Best Window and Door Foam

The foam makers sell window and door foam for that job: all four window and door data sheets we read, Kraken Bond Window & Door Pro, Stanley F902 and F902P and TYTAN Window & Door Extreme, list door and window frames or window fitting among their uses. They attach conditions. Stanley’s F902 says the foam is proven not to bow frames "when properly installed", and TYTAN’s sheet for its 24 oz can says "DOOR AND WINDOWS FITTING WITHOUT USING MECHANICAL COUPLING IS FORBIDDEN", warning that a lack of mechanical couplings may cause deformation of the mounted element. Whether a given window maker allows foam is a question for that maker’s installation instructions, and none of our records holds them.

Fill the gap only part way and work from the bottom up; all four window and door data sheets we read (Kraken Bond Window & Door Pro, Stanley F902 and F902P, TYTAN Window & Door Extreme) give both instructions. Stanley’s F902P says "Do not fill the entire gap" because the foam will expand, and Kraken Bond’s sheet says not to fill the entire gap "at once". TYTAN’s sheet for its 24 oz can adds width limits for open woodwork: gaps over 1.18 in (3 cm) are not recommended, gaps over 1.97 in (5 cm) are unacceptable, and slots wider than 1.18 in are filled from the bottom in a zigzag from one wall to the other.

Yes, if the cured foam is covered: all four window and door data sheets we read ask for paint, plaster or a coating on cured foam outdoors or against UV light. Stanley’s F902P calls itself suitable for "interior, and exterior applications" and says to paint or coat the cured foam outdoors; Stanley’s F902 and Kraken Bond Window & Door Pro say cured foam will discolor in ultraviolet light; and TYTAN’s 24 oz Window & Door Extreme sheet asks for plaster or paint "Immediately after full foam hardening". Kraken also says "Do not apply in areas exposed to direct sunlight during application", while the Stanley and TYTAN sheets say the foam should not be used in places exposed to direct sunlight, without saying whether that means during spraying or afterwards.

The four window and door data sheets we read let you cut the foam within 45 minutes and put the full cure at 24 hours. Stanley’s F902 and F902P give a cutting time of 40 min or less to ASTM C1620, Kraken Bond Window & Door Pro gives 30 to 45 min, and TYTAN’s 24 oz Window & Door Extreme sheet gives 40 min or less for a foam strip of 3 cm diameter. TYTAN is the one that ties finish work to the cure in words: "The manufacturer recommends to commence finishing works after full hardening is completed, i.e. after 24 h." None of the sheets names casing or trim boards, and all four say the cure depends on temperature and humidity.

Wet foam comes off with a foam cleaner and cured foam only mechanically, and the cleaner makers warn about the finish. The Stanley T244, Akfix 800C and Sprayman foam cleaner sheets all name window and door frames among the surfaces they clean, but Stanley’s and Akfix’s add that the cleaner "May damage sensitive surfaces", and Kraken Bond’s TE 101 sheet says "test before use" and lists paint among what it cleans off surfaces. Once the foam has cured the solvent no longer helps: Stanley’s T244 sheet says cured foam is "not affected by the solvent", and TYTAN’s Window & Door Extreme sheet says hardened foam may be removed mechanically, with a knife as its example. None of the four cleaner data sheets names a frame material, such as vinyl or aluminum, as safe or unsafe.

It depends on the can: Stanley’s F902 sheet stops at 41 F for the air and the surface, Kraken Bond Window & Door Pro gives an application temperature down to 28 F, and TYTAN’s sheet for its 24 oz Window & Door Extreme can goes to -4 F ambient and substrate. All three give a can range of 41 to 86 F, and TYTAN adds "Applicator temperature cannot be lower than can temperature." Stanley’s F948P All Season Pro is sold on a 10 F claim that appears in the Amazon title only; Stanley lists a safety data sheet for it and no technical data sheet, and that safety data sheet gives no application temperature. The Stanley, Kraken and TYTAN sheets also warn that a drop below the minimum application temperature within 24 hours of applying can affect the seal or the foam’s performance.

Stanley F902 and F902P and Kraken Bond Window & Door Pro state it in dated data sheets. Great Stuff PRO Window & Door states it on a web page with an SDS only. Akfix 805P states it in a listing title with no document behind it. TYTAN Window & Door Extreme has a dated sheet that states a low pressure, low expansion formula and names AAMA 812-19, but that sheet is for the 24 oz can, and the can in this list is the 12 oz straw can, which no document we hold names.

No. Every can here describes the behavior in words. Two brands use the sentence "proven not to bow window or door frames when properly installed" and neither names the test. TYTAN's 24 oz sheet names AAMA 812-19, the assessment written for foam at a rough opening, as verified, and prints no figure or report number; its 80 to 110 percent post-expansion line is a volume figure, not a pressure result. That is why the page asks where the statement lives rather than how big the number is.

Do not decide from the category name alone. Kraken Bond’s Gaps & Cracks sheet describes its foam as high expansion and, on the same sheet, lists fixing and insulating window and door frames; the brand also sells a separate low-expansion Window & Door Pro foam. Other general fillers likewise list frame use. Because none publishes pressure on the frame, use the window maker’s instructions and choose a product whose document states low expansion or low pressure for that opening.