--- title: Spray Foam Insulation, Closed Cell | House Tite, Ohio url: https://housetite.com/spray-foam-insulation/ description: Closed cell spray foam for rim joists, block walls, roof decks, pole barns and new builds in Central and Southeast Ohio, and straight talk on when blown in is the better value. updated: 2026-11-06 --- *Home > Services > Spray foam, where it earns its cost* Spray foam # Spray foam, where it earns its cost Closed cell foam for rim joists, crawl space and basement walls, roof decks, pole barns, metal buildings and new construction. For most attics, blown in is still the better value, and we will tell you so. Get a price Call 740-590-5352 Or text a photo to [740-590-5352](sms:+17405905352). ![A room with roof deck and walls sealed in closed cell spray foam](https://housetite.com/photos/web/sprayfoam_roofdeck_walls.jpg) *Roof deck and walls in closed cell foam.* ## Open cell and closed cell Two different materials out of the same kind of gun, according to the DOE's Building America guide [1]: | | Open cell | Closed cell | |---|---|---| | R-value per inch | About R-3.6 | About R-6 | | Water vapor | Lets vapor through | A vapor retarder at 2 inches | | Liquid water | Absorbs it, up to one third of its volume | Will not absorb water | | Strength | Adds little | Substantially increases racking strength | | Cost | Lower installed cost | Higher installed cost | ## Where we use it - [Rim joists and sill plates](https://housetite.com/rim-joist-insulation/) - Crawl space and basement block walls - The underside of roof decks, cabins and sun rooms - [Pole barns, shops and metal buildings](https://housetite.com/pole-barn-insulation/) - [New construction](https://housetite.com/new-construction-insulation/), including flash and batt and under slabs ## Flash and batt A thin coat of closed cell foam first to seal the air leaks, then fiberglass or rock wool batts fill the rest of the cavity. Most of the air sealing of foam for less money. The DOE lists it as one of the hybrid ways to use spray foam [1]. More detail, with sources, on our [insulation questions page](https://housetite.com/insulation-questions/). ### Get a price Call or text a photo of your attic hatch or crawl space. We come out, measure, and give you one written price for the whole job. Get a price Call 740-590-5352 ### Straight answers - [Is spray foam worth it?](https://housetite.com/insulation-questions/is-spray-foam-worth-it/) - [Blown in or batts?](https://housetite.com/insulation-questions/blown-in-vs-batts/) ![A round house with walls and roof in closed cell foam](https://housetite.com/photos/web/roundhouse_walls_roof.jpg) *A round house.* ![An installer in a white suit spraying closed cell foam on crawl space block walls](https://housetite.com/photos/web/crew_spraying_crawl_walls.jpg) *Crawl space block walls.* ![Closed cell foam on a roof deck between trusses](https://housetite.com/photos/web/sprayfoam_ceiling_trusses.jpg) *Roof deck between trusses.* ![Floor joists over an open space sealed with closed cell foam](https://housetite.com/photos/web/floorjoists_after_foam_1.jpg) *A floor over open space.* ![New framed walls filled with closed cell foam](https://housetite.com/photos/web/sprayfoam_walls_newframe_2.jpg) *New walls.* ![](https://housetite.com/photos/web/video_blower_door_test.jpg) Blower door test ### Measured, not guessed A blower door pulls air out of the house and measures how much leaks back in, in CFM50. Here is the test on a house we finished with closed cell spray foam. Watch on YouTube Questions about this job ### Is spray foam better than blown in? Not for every job. For a typical vented attic floor, blown in fiberglass or cellulose is usually the better value. Foam earns its cost where air sealing and moisture matter most: rim joists, block walls, roof decks, metal buildings. ### Open cell or closed cell? For most jobs around here we recommend closed cell. It insulates, seals air and stops vapor in one layer, and it does not soak up water. On sloped roof rafters the DOE rates closed cell Preferred in all climates and open cell only Acceptable in cold climates, with vapor retarders [1]. ### What about roof leaks? Roofs leak no matter what is under them. Closed cell bonds to the deck and keeps a leak where it came in. Keep the roof in good shape and pick the insulation for the other 364 days of the year. Get a price ## Tell us about the job A few details and a photo or two is all it takes. We call you back to set up a time to come out, measure, and give you one written price for the whole job. Call 740-590-5352 Text a photo 740-590-5352 Email sprayfoam@housetite.com Hours Monday to Friday, 8 to 5. Weekends by appointment. ## Sources 1. U.S. Department of Energy, Building America. [Which Spray Foam Is Right For You? Appropriate applications for open-cell and closed-cell foam insulation (2009)](https://www1.eere.energy.gov/buildings/publications/pdfs/building_america/spray_foam_guide.pdf). --- **House Tite** · insulation contractor · Nelsonville, Ohio · call or text 740-590-5352 · sprayfoam@housetite.com · Monday to Friday, 8 AM to 5 PM Eastern. Weekends by appointment. Get a price: https://housetite.com/quote/ (or text a photo of the attic or crawl space to 740-590-5352).