Foam board insulation — also called rigid foam insulation — delivers the highest R-value per inch of any insulation product. It's moisture-resistant, mold-proof, and maintains its insulating power permanently. AI Greenhome installs foam board insulation in basements, crawl spaces, attics, garages, and more across New York and the surrounding region.
Foam board insulation consists of rigid panels of foam plastic that provide a continuous, high-performance thermal barrier. Unlike batt insulation, foam boards do not sag, compress, or absorb moisture. They are available in three main configurations:
Highest R-value; foil-faced panels serve as a built-in vapor barrier. Best for basement walls and roof assemblies.
Excellent moisture resistance; ideal for below-grade foundation walls, and areas consistently exposed to water.
Most versatile and cost-effective; perfectly suitable for attics, walls, and general framing applications.
Never settles, sags, or compresses — maintains performance for the life of the home
Sheds water rather than absorbing it — no mold, no material degradation
Does not provide habitat for mice, insects, or fungal mold growth
Delivers more R-value per inch than any standard batt or loose-fill product
Foil-faced polyiso options completely eliminate the need for separate vapor barriers
Will not rot, break down, or require replacement under normal conditions
Foam board is the best choice for concrete and masonry foundation walls. It will not absorb water, compress, or degrade in damp below-grade environments. Polyiso panels with a bright white finish also improve light reflection in the space.
Foam boards on crawl space walls, combined with a ground vapor barrier, create a dry, conditioned crawl space that improves comfort on the floors above and protects your home's structural integrity.
Foam board panels are used to insulate pull-down staircase hatches and attic storage areas where loose-fill material would be disrupted by routine foot traffic. They maintain insulation continuity perfectly without interfering with access.
Rigid foam on the shared walls of attached garages blocks severe heat loss into the main living spaces and helps prevent carbon monoxide from migrating into the home.
Foam board installed over exterior wall sheathing eliminates thermal bridging through structural wood studs — a significant source of heat loss that typical batt insulation alone cannot address.
| Feature | Polyiso | XPS | EPS |
|---|---|---|---|
| R-Value/inch | R-6.5 | R-5 | R-4 |
| Moisture Resistance | Good (foil facers) | Excellent | Moderate |
| Vapor Barrier | Built-in | Semi-permeable | Needs separate |
| Best Use | Basements, roofs | Below-grade | General purpose |
| Cost | Premium | Mid-range | Most affordable |
As a NYSERDA-approved contractor and partner with Con Edison and PSE&G, we help homeowners identify and combine eligible rebates, utility incentives, and federal tax credits for HVAC, insulation, and home efficiency upgrades. Our team handles the paperwork, program coordination, and installation process from start to finish — making energy upgrades simpler, more affordable, and more transparent.
AI Greenhome is a BPI Gold Star Certified contractor serving homeowners across the New York 5 Boroughs and Long Island. We partner with NYSERDA, Con Edison, PSE&G, Central Hudson, and Orange & Rockland to maximize your rebates and make energy-efficient upgrades truly affordable.
Industry-leading certification for building performance.
We help homeowners navigate NYSERDA, utility, and federal incentive programs to maximize eligible rebates and reduce upgrade costs for HVAC, insulation, and home energy improvements.
We start with a no-cost audit to identify the best upgrades.
Fully certified professionals you can trust.
Instant approval, flexible monthly plans, and low interest rates.
Trusted by homeowners across New York and the surrounding areas.
Call (646) 756-4866 or Get a Free Estimate at ai-greenhome.com
