NH Seacoast & Southern Maine
Your home should be comfortable. We'll make sure the insulation isn't what's stopping that.
Cold rooms, drafts, high energy bills, ice dams. Green Advantage has been fixing insulation problems for local homeowners since 2016.
Green Advantage Insulation is a family-owned insulation contractor based in Portsmouth, NH, specializing in closed-cell spray foam insulation. Founded in 2016, we serve homeowners across the NH Seacoast and Southern Maine — including Portsmouth, Dover, Exeter, Hampton, Kittery, York, and surrounding communities throughout the region. When another solution makes more sense for the home, we offer hybrid systems and alternative approaches to get the right result.
Since 2016
Serving NH Seacoast & Southern Maine
24-Hour
Callback guaranteed. Call any time.
Free
Estimates. No pressure, no obligation.
Our Work
Real Jobs, Real Results
A look at some of the homes and spaces we've worked on across the Seacoast.
Wall framing fully insulated with spray foam before drywall goes up.
New construction — insulated from the studs out.
Curved roofline in an older home — spray foam gets into every corner.
Garage conversion fully sprayed — walls, ceiling, every surface covered.
Get Started
Get a Free Estimate
Tell us about your home and we'll come take a look. Straight quote, no pressure.
Prefer to call? We're a small local crew — you'll reach someone directly.
(603) 988-4137