Will new windows really lower my heating bill?

They help, but honestly the air sealing around them matters as much as the glass rating. That is where a careful installation earns its money.

Do you repair rot found at the opening?

Yes - and we find it often. We show you what is there and price the repair before we proceed.

Windows Contractor in Marlborough, MA

Replacement and new-construction window installation

(508) 598-8704

Free Windows Estimate

No cost, no obligation. We reply within 24 hours.

A good window installed badly performs worse than a cheap window installed well. The flashing, the shimming, and the air sealing are the job - the unit itself is just a product.

Problems We Fix

Drafts and cold spots

Unsealed gaps around the frame let conditioned air out all winter, and no amount of heat fixes a bad install.

Water damage behind the trim

Missing or reversed flashing sends water into the wall cavity, rotting the sill and studs invisibly for years.

Windows that don’t operate

Units racked out of square during installation bind, stick, and never seal properly against the weatherstrip.

What's Included

Full-frame replacement
Insert and pocket replacement
New-construction window installation
Rotted sill and framing repair at the opening
Bay, bow, and picture windows
Interior casing and exterior trim

Windows by Town

FAQ

Windows Questions

Insert replacement is faster and cheaper and works when the existing frame is sound. If there is any rot, the frame has to come out - otherwise you are building over a problem.

(508) 598-8704
190 Bolton St, Unit 11, Marlborough, MA 01752
@ofirconstruction
Serving all of Massachusetts

Free Estimate

Get Your Free Construction Estimate

Call and we answer during business hours. Prefer to write it down? The request form is at the top of this page.

(508) 598-8704 Go to the estimate form

No obligation and no cost for the estimate. We reply within 24 hours and we don't share your details.