New insulated siding can make a meaningful difference in how comfortable a home feels all year long. Coastal Windows & Exteriors is a woman-owned exterior remodeling company serving 730+ towns across Massachusetts, New Hampshire and Maine, with 7,000+ installations completed since 2011 and professional insulated siding installation. Indoor comfort often improves noticeably with professional installation.
How new siding contributes to a warmer, cozier home:
- 9 out of 10 U.S. homes are under-insulated — Adding insulated siding is one of the most accessible ways to close this gap.
- A 1-inch foam layer adds an immediate R-value increase of 5 — Continuous insulation blocks heat loss across the full wall, not just between studs.
- Heating and cooling energy use may reduce by 2 to 7% — Compared to older uninsulated walls, insulated siding can deliver meaningful seasonal savings.
- Fewer drafts and cold spots throughout the home — Thermal bridging at the studs is eliminated, and walls feel more consistent and comfortable all winter.
- Air infiltration reduction cuts energy consumption — Sealing the wall cavity reduces the amount of conditioned air that escapes your home.
What Comfort Improvements Can Homeowners Expect?
- Top Recommendation: CraneBoard® Solid Core Siding® for homeowners who want the greatest comfort improvement — its foam core stops heat loss directly through the wall studs.
- Best for Budget: Standard insulated vinyl siding for homeowners who want noticeably warmer rooms without a full solid-core upgrade.
- Best for Drafty Older Homes: Foam-back re-siding paired with new house wrap for homes with aging walls and minimal existing insulation.
Still have questions about whether new siding will make your home warmer? See the areas we serve and talk to your local siding contractor.
Last Updated: July 2026
Sources:
- Nine out of ten homes in the U.S. are under-insulated, leaving most homeowners with significant room to improve thermal performance. ENERGY STAR Why Seal and Insulate ENERGY STAR’s official guidance on the comfort and energy savings benefits of sealing and insulating homes. (Accessed April 2026)
- Compared to a home built to the 2009 International Energy Conservation Code, insulated siding can reduce heating and cooling energy use by 2 to 7%. Polymeric Exteriors Insulated Siding Industry Guide The Insulated Siding Industry guide on the performance and energy benefits of insulated siding products. (Accessed April 2026)
- Reduced air infiltration in the home cuts natural gas or heating oil consumption by 15% according to ENERGY STAR. ENERGY STAR Why Seal and Insulate ENERGY STAR’s official guidance on the heating cost savings achieved by reducing air infiltration in homes. (Accessed April 2026)
