Why humidity matters for spray foam in Metairie
Metairie's climate zone, 2A, is defined by heat and humidity. A vented attic pulls in outdoor air that's often near 80 degrees with high humidity. That moisture ends up in ducts, around the air handler and in the insulation itself.
Sealed spray foam attics and moisture control
Sealing the roof deck with spray foam keeps that outdoor air out. But a sealed attic still needs a way to stay dry, especially with open-cell foam, which lets some moisture through. Common approaches include a small supply of conditioned air into the attic or a dedicated dehumidifier.
Spray foam and air conditioner sizing
After an attic is sealed, the home's cooling load usually drops. An oversized air conditioner short-cycles and removes less humidity. If you're replacing the AC soon, have the contractor size it after the foam goes in.
Related: attic spray foam · open-cell vs. closed-cell · common problems
How getting a spray foam estimate works
- Call or send a requestTell us what you want insulated and where you are.
- Get a written estimateA local installer measures and quotes foam type, thickness and price.
- Get it installedMost attics are done in a day or two.
Why call us for spray foam insulation
- One callSkip calling around. We connect you with a local spray foam installer.
- Local installersCrews that work in Metairie and across Jefferson Parish.
- Free to useThere's no charge to you for the referral.
- Built for our climateAdvice that fits Gulf Coast heat, humidity and termites.
Hot attic? Get a free spray foam estimate.
Call now(504) 555-0199Spray foam insulation service areas
Spray foam insulation questions
Do I need a dehumidifier after spray foam?
Not always, but many sealed attics in humid climates use one or get a small supply of conditioned air. Ask your installer and HVAC contractor.
Will spray foam make my house too tight?
Tighter homes are more efficient but need adequate fresh air. Your HVAC contractor can tell you whether ventilation is needed.
Request a spray foam insulation estimate
Tell us about the project and a local installer will call you back. Prefer to talk? Call (504) 555-0199.