Low-expansion window and door foam is specially engineered to seal, insulate, and protect framing gaps without bowing or distorting window and door jambs. Whether you're installing new units or improving the energy performance of existing frames, these foams deliver precise expansion, airtight sealing, and durable long-term insulation.
Explore our curated selection of professional-grade formulas designed specifically for window and door installations.
Why Use Window & Door Foam?
Window and door assemblies require a sealant that expands just enough to fill the cavity without applying pressure that can warp frames. Window & Door Foam offers:
- Low, controlled expansion to protect frames
- Superior air sealing to eliminate drafts
- Moisture- and mold-resistant performance
- Adhesion to wood, vinyl, aluminum, concrete, and drywall
- UL and AAMA-compliant options
- Gun-grade and straw-grade formats for any project size
Perfect for contractors and DIY homeowners who demand precise, professional results. For more air-sealing and insulation options, explore our full collection of Foam Sealants.
Best Uses for Window & Door Foam
- Installing or retrofitting windows and doors
- Sealing between framing and rough openings
- Eliminating drafts and moisture infiltration
- Filling small gaps around pipes, outlets, and electrical penetrations
- Protecting against mold and condensation buildup
How to Apply Window & Door Foam
- Clean, dry, and lightly moisten the surface.
- Shake the can vigorously and attach the straw or gun applicator.
- Hold the can upside down and apply foam starting at the bottom of the cavity.
- Fill only 30–50% of the gap; foam will expand.
- Allow to cure for 24 hours.
- Trim excess foam and protect with paint, plaster, or sealant.
Gun-grade versions provide maximum control and professional precision.
Recommended Window & Door Foam Products
Stanley F948P Window & Door All Seasons Pro – 24 oz
A high-performance, all-weather low-expansion foam engineered to work in extreme cold, down to 10 °F (-12 °C). Offers waterproof and mold-resistant sealing with excellent year-round durability.
Explore Stanley F948P here to view full specs and purchase options.
Kraken Bond PRO Window & Door Gap Filler – 24 oz / 32 oz
Professional-grade PU foam with superior adhesion, high insulation value, and precise low expansion for window and door installations. UL certified, moldproof, and AAMA compliant.
Shop Kraken Bond PRO Window & Door Foam to compare sizes and performance.
SPRAYMAN Window & Door Low Expansion Gun Foam – 24 oz
Low-expansion polyurethane foam offering exceptional thermal and acoustic insulation with minimal pressure on frames. Provides high yield and excellent adhesion.
View SPRAYMAN Window & Door Foam for detailed specs and pricing.
Stanley F902 Window & Door Foam Sealant – Straw Applicator – 12 oz
A user-friendly, straw-applied low-expansion foam ideal for small to medium sealing projects. Moldproof, waterproof, and meets UL & AAMA standards.
See Stanley F902 Window & Door Foam Sealant for small-project applications.
Stanley F902P Window & Door Pro Gun Foam – 24 oz
A premium gun-grade formula offering superior control, consistent expansion, and professional results. Mold- and water-resistant, UL classified, and AAMA compliant.
Browse Stanley F902P Pro Gun Foam for high-precision installation work.
Frequently Asked Questions (FAQ)
What is window and door foam used for?
It’s a low-expansion polyurethane foam used to insulate and seal around window and door frames without causing warping or pressure damage.
What makes window & door foam different from regular expanding foam?
Window & door foam is low-expansion, meaning it fills the cavity without creating pressure that can distort or bow frames.
Can I use this foam in cold temperatures?
Yes, certain products like Stanley F948P are rated for installation down to 10 °F (-12 °C).
Is window & door foam waterproof?
Most formulations are water-resistant and mold-proof, making them ideal for both interior and exterior installations.
Can cured foam be painted or cut?
Yes, all foams in this category can be trimmed, sanded, and painted after curing.
Should I choose a straw or a gun applicator?
- Straw: Best for small DIY jobs
- Gun: Best for professionals and larger projects needing precise control