Coastal Windows & Exteriors serves 730+ towns across Massachusetts, New Hampshire and Maine with 7,000+ installations completed since 2011, and double-hung window installation removes the old sash, preps the opening, and sets a new unit.
Steps in a Quality Installation
- Precise Measurement — Every opening is measured before the work begins. Accurate numbers prevent gaps, drafts, and future leaks.
- Old Unit Removal — The existing sash comes out with care for your walls and trim. Your home stays protected throughout.
- Opening Prep — Crews inspect and prep the frame for a clean fit. Any hidden damage gets addressed before the new window goes in.
- Level Setting — The double-hung unit is set square, level, and plumb. A true fit makes the sashes glide with ease.
- Weathertight Sealing — Insulation and weatherstripping lock out air and water. Cold-climate winters demand a tight seal.
- Final Walkthrough — You inspect the finished work with the crew. Nothing wraps up until you are satisfied.
Best Approach for Your Install
Top Recommendation: Full-frame replacement for older homes where the surrounding frame shows wear.
Best for Sound Frames: A pocket install that reuses a solid existing frame and speeds the job.
Ideal for Waterfront Homes: Triple-pane double-hung units that balance airflow, quiet, and efficiency.
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Last Updated: August 2026
Sources:
- Double-hung windows remain the most requested type, cited by 35% of professionals. Fixr Windows and Doors Report, 2026 survey of windows and doors professionals on window styles. (2026)
