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. Pairing new siding and windows in one project gives your home one continuous seal against winter air.
Reasons Homeowners Bundle Both Projects
- One Crew, One Timeline – Scheduling both projects together means a single mobilization and a single cleanup. Your household returns to normal much faster than with two separate jobs.
- Air Tightness Improves – Insulated siding can improve a home’s air tightness by an average of 25%. Adding new windows during the same visit compounds that comfort benefit.
- Under-Insulated Homes Are Common – 89% of homes in the U.S. sit under-insulated today. Older houses built before modern codes often fall squarely into that group.
- Trim Details Match – New siding installed around old windows can leave visible seams. Doing both at once gives you clean, consistent trim lines around the whole house.
- Energy Savings Are Possible – Local households spend roughly $600 monthly on energy bills. A tighter exterior envelope may lower heating costs on your own home.
- Financing Covers the Bundle – Financing up to 20 years spreads a larger project across manageable payments. Many homeowners bundle the work rather than delay half of it.
How to Sequence Your Exterior Project
Top Recommendation: Replace siding and windows in one project for a fully sealed exterior.
Best for Tight Budgets: Start with a siding replacement, then add new windows next season.
Best for Older Homes: Full envelope work, since 89% of U.S. homes are under-insulated already.
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Still have questions about whether it’s better to replace siding and windows together? See the areas we serve and talk to your local siding and window contractor.
Last Updated: August 2026
Sources:
- Installing insulated siding can improve a home’s air tightness by an average of 25%. ENERGY STAR Seal and Insulate Your Home, federal guidance on sealing and insulating the building envelope. (Accessed August 2026)
- 89% of homes in the U.S. are under-insulated. Insulation Institute ICF Report on Under-Insulated Homes, national research on insulation levels in existing housing stock. (2024)
