Best Window Installers near Saint-Constant, QC
These companies serve Saint-Constant from nearby bases in towns including Saint-Laurent, Saint-Hubert and Dollard-des-Ormeaux.
12 companies listed · 3 open weekends · 10 rated 4.5+ · 4 show a licence
Data verified October 18, 2026
Innovation Portes et Fenêtres
Élit Tech Portes Fenêtres & Toitures Métalliques
Portes et Fenêtres Factory Direct Montréal Windows & Doors
Doors & Windows Inc South Shore
Portes et Fenêtres Inter-Québec
Listed for homeowners in and around Saint-Constant, QC, these 12 companies fit and repair windows. Frame materials, glazing options and any credentials shown are taken from company websites; the customer lines are quoted from public reviews.

Area overview: Saint-Constant, QC
The 12 companies on this page are rated from 4.0 to 5.0 across 1,348 reviews; 9 have 50 or more reviews and 10 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (97%), quality (70%) and punctuality (62%). 3 are open on Saturdays. 4 show a licence on their websites. Domain records put 4 websites of the companies on this page at ten or more years old; the oldest dates from 2000. 4 give free estimates and 1 lists coupons or special offers. We have a website on file for all 12 of the companies on this page; 10 publish a contact page and 9 list a public email. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book.
Is the home visit and measurement free?
A no-cost quote is offered by 4 of the 12 companies on this page. It comes with a sales visit, so agree how long it will take before they arrive. Ask for the quote in writing on the day, itemized by window, and be wary of a discount that disappears the moment the visit ends.