https://sunsealsprayfoam.com/blog/ Straight answers about spray foam insulation in Houston. en-us https://sunsealsprayfoam.com/blog/spray-foam-insulation-cost-houston https://sunsealsprayfoam.com/blog/spray-foam-insulation-cost-houston Sun, 13 Sep 2026 12:00:00 GMT Real installed prices for spray foam in Houston by application. Open-cell runs about $2.50 to $3.50 per square foot, closed-cell $3.50 to $5.00, and a typical attic lands between $4,000 and $10,000. https://sunsealsprayfoam.com/blog/open-cell-vs-closed-cell-houston https://sunsealsprayfoam.com/blog/open-cell-vs-closed-cell-houston Sat, 12 Sep 2026 12:00:00 GMT Open-cell is the usual choice for Houston attic roof decks. Closed-cell belongs in crawl spaces, on metal buildings and near the coast. Here is how to decide, assembly by assembly. https://sunsealsprayfoam.com/blog/houston-attic-insulation-code-r-value https://sunsealsprayfoam.com/blog/houston-attic-insulation-code-r-value Fri, 11 Sep 2026 12:00:00 GMT Houston is in IECC Climate Zone 2A. Depending on the code edition your jurisdiction enforces, the attic minimum is R-38 or R-49, and spray foam at the roof deck meets it as an unvented attic assembly.