Spray Foam Insulation in Bowling Green, KY

Spray foam insulation expands to fill the cavity it is sprayed into, so it blocks air movement and insulates at the same time. In Bowling Green, where summers are long and humid, that air seal matters as much as the R-value. Humid outside air leaking into attics, walls and crawl spaces brings moisture with it, and stopping it keeps the house drier and easier to cool.

Closed-cell foam

Closed-cell foam is dense and rigid, about R-5 to R-7 per inch according to HomeGuide, and at enough thickness it slows water vapor. We use it on crawl space walls, rim joists, basement walls and metal buildings, where moisture is part of the problem. HomeGuide lists it at $3.00 to $5.00 per square foot installed.

Open-cell foam

Open-cell foam is soft and expands a lot, about R-3.5 to R-3.7 per inch. It fills irregular rafters and stud bays well and costs less, about $1.50 to $3.50 per square foot. It is a common choice for the underside of the roof deck when the attic holds ductwork or an air handler, because it brings that equipment inside the conditioned space. The Department of Energy advises against open-cell foam below ground level.

Where foam fits best around Bowling Green

• Attics with ductwork. Foam on the roofline keeps ducts out of the hottest attic air in July.
• Crawl space walls and rim joists. Closed-cell foam on block foundation walls, paired with a sealed ground cover.
• Bonus rooms and kneewalls. Foam fills the slopes and kneewalls that batts never fit well.
• Metal shops and pole barns. Closed-cell foam on steel stops condensation.
• New construction and additions. Open or closed cell in open stud bays.

Before we spray

We look for roof leaks, plumbing leaks, mold and standing water first. Foam over a problem hides it. We also look at ventilation: a much tighter house may need bath fans that vent outdoors and a check on any gas appliances. Get a free estimate