The Top Spray Foam Insulation Business in Knoxville, TN

Spray Foam Insulation

RetroFoam of East Tennessee specializes and offers consultation free of charge in the install of open cell OR closed cell Sprayfoam for new construction residential homes, barndominiums, retrofit attics & crawlspaces, and more. Be prepared to spend about 1 ½ times the cost of typical fiberglass, maybe more. We can help best insulate:

• New homes
• Barndominiums
• Metal pole barns
• Storage buildings
• Attic roofs
• Crawlspace foundation walls
• Crawlspace subfloors
• Residential remodeling
• Knee walls and dormer walls

Spray foam is quickly becoming the energy saving choice for open or exposed walls, rafters, floors, and framing cavities to provide more comprehensive coverage to secure your property. Call or text us today to discuss your insulation needs. During a free phone consultation, we focus on education first and selling second. For us, every home is like our grandma's!

Let's Compare The Two Products - Neither is Better Than The Other

Open Cell, while more porous than Closed Cell, will allow moisture to come through, can often provide equal or higher R-value for equal or less cost than Closed Cell, depending on the structure’s framing detail. It can be shaved back to the stud face if needed. It is our most common choice for 2x6 or greater residential roof & wall framing, 2x6 or greater pole barns, and barndominiums. The average R-value for all Open Cell products on the market is between R3.6 and R4.2 per inch thickness. The minimum we spray on a metal building is 5 inches.

Closed Cell has an average of R 6.6 to R7.2 per inch thickness, typically costs more, provides a solid vapor barrier at 1 inch or more, and is most often used for smaller metal buildings walls & roof, residential 2x4 exterior walls, and block foundation walls. It has higher moisture prevention.