Patio door Installation

Modern replacement patio doors 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.

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Save up to $150 per each new window or door!

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.

Grants for Windows & Doors

Our Flawless Window Installation Process

Opening review and layout planning

For patio doors, we review the opening, floor level, and traffic pattern, then measure for the right configuration and track system.

Door configuration and ordering

You choose between sliding or French‑style units, glass and grid options, and hardware, while we handle ordering, access planning, and timing with your deck or patio.

Precise installation and adjustment

We prepare the sill, set the frame plumb and square, insulate and seal around it, then adjust rollers, locks, and weatherstripping so the door glides easily and seals tightly.

    
 
 
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   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!
  
 
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   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.
  
 
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   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
  
 
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   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.
  
 
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   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 !
  
 
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   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 provide a comprehensive suite of tailored services designed to enhance comfort, energy efficiency, and style in your home. From sliding glass to French or multi-panel patio doors, our team ensures each installation is precise, smooth-operating, and complements your living space.

Using advanced installation techniques and high-performance materials, we deliver patio door solutions that reduce drafts, improve thermal performance, and provide reliable security, while maximizing natural light and outdoor access for years to come.

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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.

Patio door Installation

540 Patio Door is a bright sliding PVC door with a wood frame that maximizes glass area and daylight.

Studio Aluminum Patio Door is a heavy-duty sliding aluminum door tailored for demanding, high-performance building projects.

Element Patio Door is a hybrid sliding door in wood/PVC with exterior aluminum cladding for a refined modern look.

630 Patio Door is a practical sliding PVC door designed for easy installation and solid energy efficiency.

550 Patio Door is a sliding wood/PVC door with high energy-efficient glazing for comfortable interiors.

650 Patio Door is a robust sliding PVC door with reinforced sashes and slim profiles for strength and light.

Imagine Patio Door is a sliding wood/PVC door styled like garden doors to save space while adding character.

Loft Aluminum Patio Door is a lift-and-slide aluminum system that lets large glass panels glide smoothly for wide openings.

Urbania Aluminum Patio Door is a contemporary sliding aluminum door with thermal breaks for durable, efficient performance.