Spray Foam Insulation

Spray foam insulation delivers high R-value, superior air sealing, and long-term energy savings by expanding to fill gaps that batts and boards miss. It improves comfort by reducing drafts, helps control moisture leading to mold, and adds sound reduction in homes and commercial spaces. From attic slopes and roof decks to rim joists, crawl spaces, and basements, spray foam enhances the building envelope and lowers heating and cooling loads.

Choose the right chemistry for your project. Closed-cell spray foam offers higher R per inch, a built-in vapor retarder, and added structural stiffness—great for exterior walls, below-grade areas, and metal buildings. Open-cell spray foam costs less per board foot, expands aggressively to seal irregular cavities, and excels at interior sound control. For small repairs and air sealing, single-component cans handle gaps and cracks. For larger areas, two-component DIY spray foam kits cover hundreds of board feet. Contractors can scale up with proportioner rigs, heated hoses, and bulk tanks for consistent, high-output application.

This category includes spray foam guns and applicators, interchangeable nozzles and tips, hoses, heaters, foam cleaners, saws and knives for trimming, and PPE such as respirators, gloves, and disposable suits. You will also find fire-resistant intumescent coatings and ignition barriers to meet code in habitable spaces.

Application tips that pay off: verify substrate cleanliness and moisture levels; warm tanks to the recommended temperature; test-spray to dial in mix; apply in lifts within specified thickness; allow proper cure and ventilate thoroughly; mask windows and wiring to avoid overspray; calculate yield in board feet to buy the right kit; and dispose of spent cylinders per local regulations.

Browse spray foam insulation supplies, closed-cell and open-cell foam, DIY kits, professional spray foam equipment, and accessories to improve energy efficiency, air sealing, moisture control, and comfort on your next build or retrofit.