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Glass French doors in a home at night in Greenwich, CT

Window and Door Installation in Greenwich, CT

Mosquera Construction replaces windows and installs doors in Greenwich, CT, with every opening checked, flashed, and trimmed correctly. One crew from measurement to final trim. Licensed, insured, with free written estimates.

Window and Door Installation in Greenwich, CT

Mosquera Construction installs and replaces windows and doors in Greenwich, CT. Window replacement, new construction windows, entry doors, and patio doors are installed and trimmed by one licensed crew.

New exterior bay window installed by Mosquera Construction in Connecticut

Greenwich housing runs to center-hall colonials, shingle-style houses, and backcountry estates, a large share of them built before 1950. Openings on these houses have usually moved, so no replacement unit drops in square without adjustment.

Windows in Greenwich tend to be older wood windows with divided lites on colonials and shingle-style houses. The most common request is replacement windows that keep the divided-lite look of an older colonial.

Every window and door in Greenwich has to handle salt air and wind-driven rain off the harbor, which works into sills and casing. That decides the flashing, the sill detail, and the trim material.

Window Replacement Done Right in Greenwich Homes

Most drafts and leaks in Greenwich homes come from the opening, not the glass. Sill pan, flashing tape, and house wrap have to lap in the right order.

Insert or full-frame depends on the frame. If the sill and jambs are solid, an insert saves time and trim. If there is rot, full-frame is the right call.

Doors need the same care. Entry and patio doors are hung plumb, level, and square, with the sill sealed so it never takes on water.

Trim finishes the job. Interior casing and exterior brickmold or flat stock are matched to the existing Greenwich house.

Hire a Licensed Window and Door Contractor in Greenwich, CT

Mosquera Construction is a licensed and insured window and door contractor working in Greenwich and the surrounding towns. Twenty years in Connecticut homes, with free written estimates.

Every Greenwich job follows the same four steps: measure and inspect, written scope, remove and install, then test and trim.

Braulio Mosquera runs the estimate and the job site. On Greenwich jobs that means the person who measured the openings is the one installing the units.

Front door with sidelights installed by Mosquera Construction in Connecticut

To start, call (203) 942-9495 or send photos of the windows or doors you want replaced. Estimates on Greenwich window jobs are written, itemized, and free.

  • Licensed Connecticut Contractor
  • Fully Insured
  • 20 Years of Experience
  • Working in Greenwich and Nearby
  • Free Written Estimates

Recent Projects

Window and Door Questions from Greenwich Homeowners

Yes. We work in Greenwich and the surrounding towns, including Old Greenwich, Cos Cob, Riverside, and Byram. If you're right on the town line, call and we'll confirm before scheduling a visit.

It depends on the number of openings, unit type, and what we find behind the trim. We don't quote by phone, because the number would be wrong. The visit and the written estimate are free.

Same-size replacement often doesn't need one, but enlarging an opening or adding a door does. In Greenwich that goes through the Town of Greenwich building department. We confirm before scheduling.

It depends on the frame. If the sill and jambs are solid, an insert works. If there's rot or the opening has moved, full-frame is the right call. We'll tell you after we look.

Yes. We swap one opening at a time and close it right away, so heat loss stays minimal. The sealants and flashing we use are rated to cure in cold weather.

It depends on unit lead times, which can run several weeks after ordering. Call (203) 942-9495 and we'll give you an honest schedule once the units are measured.

Why Greenwich Homeowners Choose Us

  1. Licensed and insured window and door contractor working in Greenwich and nearby towns
  2. Every opening inspected and any rot corrected before install
  3. Sill pans, flashing tape, and house wrap lapped correctly
  4. Insert or full-frame chosen after inspection, not by default
  5. Interior and exterior trim matched to the existing Greenwich house
  6. Free written estimates on every Greenwich window and door job
  7. Old units hauled away and the job site left clean

Window and Door Services Near Greenwich, CT

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Ready to Replace Windows or Doors in Greenwich?

Send photos of the windows or doors you want replaced. Estimates on window work in Greenwich, CT are written and free.

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