Modern replacement windows are one of the most impactful upgrades for energy savings, year-round comfort, and a tighter, better-protected home envelope. At Fortena, we handle the hard choices by assessing your home, priorities, and budget, then recommending the best fit rather than pushing whatever is on hand.
If you are planning a window replacement or door installation in Quebec, you may be eligible for meaningful rebates through active energy efficiency programs. For homeowners, Rénoclimat can provide up to $150 per eligible door or window. Depending on your building type, additional support may also be available through utility and commercial-focused initiatives that incentivize building envelope upgrades, including eligible window replacements for multi unit and commercial properties. In our full guide, we summarize what is currently open at the provincial, federal, and utility levels, the key conditions to qualify, and the practical steps to apply so you can reduce the total cost of your upgrade without compromising on performance.
We start with a free visit to review your openings, check for drafts or moisture risks, and take precise measurements. You also get clear guidance on styles, glazing, and performance options based on your home and budget.
Customized Windows Ordering and Project Planning
Next, we confirm the final specifications and order your windows to match your exact measurements and selections. We then plan the job details, including access, protection of interior finishes, and scheduling.
Professional Installation and Clean Finishing
We remove the old unit, prepare the opening, and set the new window square, level, and securely fastened. We air seal and insulate around the frame, complete interior and exterior finishing, then do a full cleanup and inspection.
Posted on Google
Laura Pagé
Trustindex verifies that the original source of the review is Google.
Nous sommes super satisfait des travaux qui ont été fait par l'équipe de Fortena Fenêtres et Portes! Une installation impéccable et professionelle! Je vous les recommande fortement. Une équipe très aimable et à l'écoute de nos besoins :) Merci beaucoup à vous!
Posted on Google
Claudette
Trustindex verifies that the original source of the review is Google.
Des installateurs attentionnés ,ils sont minutieux et fais un très bon travail. Ils sont très respectueux et ne laisse aucun débris. Nous recommandons cette entreprise.Nous sommes très satisfait de leur travail et de la qualité des portes.
Posted on Google
Stéphane Chamberland
Trustindex verifies that the original source of the review is Google.
Super service ! Prix compétitif et Alex toujours disponible quand besoin de lui. Agrandissement de porte patio et fenêtre de cuisine. Beau travail !
Posted on Google
Ryma Houari
Trustindex verifies that the original source of the review is Google.
Vraiment très belle job le boss Alex personne très fiable professionnel je recommande fortement qualité du produit et prix très raisonnable .
Posted on Google
Brahim Alami
Trustindex verifies that the original source of the review is Google.
Une très belle expérience de professionnalisme, le respect du temps et la qualité de travail. Contact à garder précieusement pour vos prochaines rénovations.
Posted on Google
Marie-France Palengat
Trustindex verifies that the original source of the review is Google.
Je suis très satisfaite de l'installation. Gens très gentils. Alexandru est une personne très à l'écoute de nos besoins. Je recommanderais sans hésiter
Posted on Google
Rania Ben
Trustindex verifies that the original source of the review is Google.
Nous sommes très satisfaits de l’excellent travail exécuté avec professionnalisme et compétence par Alex et son collègue, ainsi que des précieux conseils qu’ils nous ont donnés. Leur souci du détail et du travail bien fait a fait toute la différence : ma cuisine est maintenant plus droite qu’elle ne l’était auparavant.
Posted on Google
Amélie Maranda
Trustindex verifies that the original source of the review is Google.
Excellent service du début à la fin ! L’installation des fenêtres et des portes a été réalisée avec beaucoup de professionnalisme. Le travail est propre, rapide et très efficace. L’équipe est sérieuse, ponctuelle et attentive aux détails, en plus les prix sont très compétitifs. Je suis vraiment satisfaite du résultat final. Je recommande fortement cette compagnie !
Posted on Google
francine davis
Trustindex verifies that the original source of the review is Google.
Très bon travail effectué par les installateurs; très professionnel; je recommande sans réserve.
Posted on Google
Michel Sylvestre
Trustindex verifies that the original source of the review is Google.
Installation très réussie de deux grandes fenêtres à battant. Travail minutieux et très soigné. Installateurs serviables. Recommandé sans hésitation!
Verified by Trustindex
Trustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
High-performance windows & doors built for Quebec’s harsh winters and hot, humid summers.
Empowering Homes With Energy-Efficient Windows & Doors
100%
Triple pane Low E glass with argon fill reduces heat loss, drafts, and condensation for consistent comfort
Energy-efficient frames, warm edge spacers, and high-performance seals cut air leakage, keep indoor temperatures stable
Patio doors and entry doors with enhanced cores, tight weatherstripping, and multipoint locks improve efficiency, comfort, and noise control
We specialize in professional window installation designed for Quebec’s extreme climate conditions. From triple-pane Low-E glass with argon gas to reinforced PVC frames and warm-edge spacers, every system we install is engineered to minimize heat loss and reduce air infiltration.
Proper installation is just as critical as product quality. Our team ensures accurate measurements, insulated framing, airtight sealing, and correct exterior flashing to protect your home from drafts, condensation, and water intrusion.
Local Roots in Saint-Constant, Serving Greater Montreal
Based in Saint-Constant, Fortena serves homeowners and property managers across Greater Montreal’s South Shore and all Montreal neighbourhoods, including Saint-Constant, La Prairie, Candiac, Brossard, Longueuil, Boucherville, Saint-Lambert, Saint-Bruno-de-Montarville, and Chambly. We tailor every window replacement and door installation to the realities of each area. In family-focused communities like Saint-Constant, Saint-Bruno-de-Montarville, Boucherville, Candiac, and La Prairie, our work often involves full retrofits for bungalows, split-levels, and newer two-storey homes, with energy-efficient PVC windows & doors systems and tight, clean finishing. In denser markets like Brossard and Longueuil, we frequently coordinate installs for townhouses, condos, and multi-plexes, with precise measurement, access planning, and consistent results across units.
