Finding the right installer starts with knowing what to look for. A GAF Master Elite certified contractor with local references and proven experience is your safest bet.
Finding the right installer starts with knowing what to look for. A GAF Master Elite certified contractor with local references and proven experience is your safest bet.
What to Evaluate Before Hiring
- Certifications & Credentials — Look for GAF Master Elite status and Lead-Safe EPA Certification. Coastal Windows & Exteriors holds both, and has completed 7,000+ installations across Massachusetts.
- Local Track Record — Ask for completed projects in Norfolk County specifically. Brookline’s older housing stock often requires custom sizing and structural prep.
- Product Lines Offered — Contractors who carry only one brand limit your options. We install ProVia Entry Doors and Soft-Lite Sliding Patio Doors — both made in the USA.
- Color & Design Flexibility — The full Sherwin Williams catalog should be available to you, not a handful of stock colors.
- Transparent Estimates — A trustworthy installer provides written, itemized quotes. We offer free estimates with no pressure and no surprises.
- Reviews & Ratings — We carry 900+ Google reviews and a 4.8-star rating. Check those numbers against any installer you consider.
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Last Updated: March 2026