Building envelope experts
Balcony and deck construction in Montreal and on the South Shore
Is your balcony unstable, the boards rotten, or do you want to expand your outdoor space? We design and build your balcony or deck from A to Z, plans, permits, materials and careful finishing.
Our partners
Cladding specialist
Balcony construction and repair in Montreal
A wobbly balcony, rotten boards, a rusty railing? A failing balcony is dangerous, and often cheaper to replace than to repair. We offer you the best option for your budget: fiberglass, composite or treated wood. Solid structure, aluminum railings, clean finish and municipal permit included.
Solid structure
Foundations and framing built to last through Quebec winters and their freeze-thaw cycles.
Careful aesthetics
Clean finishes and quality materials that match your exterior cladding.
Guaranteed safety
Railings compliant with the Building Code, height, spacing and fasteners to standard.
Minimal maintenance
Composite and aluminum materials that resist the weather without yearly painting.
Our expertise
Balcony and carpentry expertise
Dozens of balconies built and renovated in Montreal, durable, attractive and code-compliant.
Years of experience
Balconies completed
Google rating
sq. ft. installed
How it works
The steps to get your cladding replaced
Structural assessment
An expert assesses the existing structure, loads and standards to meet for your project.
Material selection
Selection of materials (composite, fiberglass, treated wood) and a design suited to your style.
Municipal permit
Verification of requirements and filing of the construction permit if needed.
Construction
Installation of the structure, flooring and railings to Building Code standards.
Finishing and handover
Final inspection, adjustments and full site cleanup.
They trust us
“Nous avons fait appel à EJA pour le revêtement extérieur (acier MAC) de notre agrandissement. Nous avons été en contact avec Emir pour la planification du projet et avec Jérémy et leur équipe pour l'exécution. Nous sommes très satisfaits de la qualité et de la rapidité d'exécution du travail effectué. Les commentaires Google, sur lesquels nous nous sommes fiés, sont bien fidèles à la réalité. Je recommande donc grandement les services de l'entreprise EJA pour vos projets de revêtement extérieur.”
“Mon premier contact avec l'équipe a été avec Emir. Il est venu rapidement, retournait ses appels. Il m'a bien accompagné pour la soumission, le permis et s'est montré patient avec le financement. Ensuite, Jérémie et son équipe ont fait la pose. Ils sont respectueux, vérifient les morceaux avant de les installer et ont corrigé des défauts sur la maison pour empêcher l'eau de s'infiltrer. À la fin de chaque journée, Jérémie faisait le tour avec nous et le chantier restait propre. On n'a pas eu de surprise, la communication était bonne et les délais respectés. Je recommande !”
“J'ai fait appel à EJA pour le revêtement extérieur de ma maison, qui était vraiment en mauvais état. Je suis absolument ravi du résultat : l'équipe a travaillé avec un grand souci du détail, et le changement est spectaculaire. Ma maison a retrouvé toute sa beauté, presque comme neuve. Je recommande vivement leurs services à quiconque veut redonner vie à l'extérieur de leur maison.”
“Très bonne expérience avec Jérémie et son équipe ! On a fait refaire une terrasse en hauteur, qui sert aussi de toit, et permet l'écoulement des eaux. L'équipe a bien travaillé dans des conditions météo difficiles et en hauteur. Le résultat est bien fait. Les communications étaient bonnes.”
“Excellent service. On a fait appel à EJA pour des travaux de calfeutrage pour notre copropriété. Très pro, bonne communication avant, pendant et après les travaux. 5/5”
“Les Entreprises EJA did an excellent job on the complete overhaul of the wooden siding of our chalet, and stand highly recommended for their reliability and conscientious work! Emir, Jeremie and their team reassured me that there are still hardworking young people out there, for whom a job well-done is not only a question of money well-earned, but also of professional pride and honor!”
Reviews published on Google
See all 78 reviews on GoogleStep 1 — Structural assessment
What we assess before the work
Before any balcony project, our expert analyzes the existing structure and constraints to offer you the best solution.
Load-bearing structure
Inspection of existing joists, posts and anchors to assess their load capacity and condition
Current floor condition
Assessment of boards, membranes and floor structures to detect rot or deformation
Railing compliance
Verification of the height, spacing and strength of current railings against the Building Code
Drainage and runoff
Analysis of the balcony slope and drainage systems to prevent water buildup
Anchoring to the facade
Inspection of the balcony’s attachment points to the main building, a critical area for safety
Access and width
Verification of dimensions and access to ensure compliance with habitability standards
Step 2 — Regulations and permits
We handle everything. You have nothing to do.
Many municipalities require a permit before replacing exterior cladding. At EJA, it is included in our service: we check local requirements, prepare the documents and manage the process for you.
Checking municipal requirements
Every city has its own rules. We review your municipality’s bylaws before submitting anything.
Permit application if required
We prepare the documents, the plans and the complete file. We submit on your behalf and follow up.
Building Code compliance
All our work meets the requirements of the Quebec Building Code and current RBQ standards.
Service areas
We travel
everywhere for you
Montreal
- Verdun
- Lachine
- Plateau Mont-Royal
- Saint-Laurent
- Westmount
- Ahuntsic
- Anjou
- Griffintown
South Shore
- Longueuil
- Brossard
- Châteauguay
- Boucherville
- Saint-Jean-sur-Richelieu
- Sainte-Hyacinthe
- Saint-Bruno
North Shore & Laval
- Laval
- Blainville
- Boisbriand
- Mirabel
- Rosemère
- Terrebonne
- Mascouche
Don't see your area? Contact us to discuss your project.
Step 3 — Choosing the materials
Our balcony materials
We select the best materials for your project, your style and your budget.
Fiberglass (Duradek)
A waterproof, durable surface, ideal for weather-exposed balconies.
Strengths
- Fully waterproof
- Exceptional durability
- Easy maintenance
- UV resistant
Composite (Trex, TimberTech)
The look of wood without the upkeep. Resistant to rot, stains and insects.
Strengths
- Natural wood look
- Zero maintenance required
- Rot resistant
- Durable 25+ years
Aluminum railings
Light, rust-resistant and available in several colors and styles.
Strengths
- Light and strong
- No rust
- Multiple colors
- Building Code compliant
Treated wood
A traditional, affordable option, ideal for budget-conscious projects.
Strengths
- Budget-friendly
- Warm natural look
- Easy to customize
- Immediate availability
Step 4 — Detailed quote
A clear quote, no surprises
Your quote includes materials, labor, timeline and warranties. Here are the 4 factors that make a project’s cost vary.
Type of materials
Treated wood, composite (Trex, TimberTech) or fiberglass (Duradek), the price gap between these materials is significant but justified by durability and maintenance.
Balcony surface area
The size of the balcony (area in sq. ft.) is the main cost driver. Ground-level decks and elevated balconies also vary in labor cost.
Railings and guardrails
Aluminum, glass or stainless steel, railings are a significant part of the budget. Building Code certified systems are mandatory.
Structural repairs
If the existing structure is damaged (rot, deformation), prior repairs add to the cost of the renovation or construction.
Step 5 — Installation day
An installation done by the book.
A durability guarantee for your exterior cladding
Balconies built to last
When Les Entreprises EJA install your cladding, you walk away with much more than a beautiful facade. Every project is covered by the manufacturer warranty:
- Work warranty : Labor guaranteed 2 years, we come back if anything goes wrong
- Certified materials : Products from recognized brands with manufacturer warranties of 10 to 25 years
- Permits included : We handle the construction permits from your municipality for balconies requiring authorization
Materials per the manufacturer + 15 to 20 years.
Resources and articles
Find answers, tips and guides to better understand exterior cladding and your options.
Frequently asked questions
Everything you want to know
Have other questions? Our team is here to help, at no cost and with no obligation.
Can I repair my existing balcony?
You can repair your balcony, but it is essential to assess the extent of the damage. For safety, it is recommended to consult professionals.
How do you build a balcony?
Construction involves designing a plan, choosing durable materials (treated wood, composite, fiberglass) and ensuring compliance with the safety standards of the Building Code.
Is a permit required in Montreal?
A permit is required in Montreal for the construction or renovation of balconies according to municipal regulations. At EJA, we handle the process for you.
How long does balcony repair or construction take?
It can take from a few days to a week depending on the scope of the work, the chosen materials and the complexity of the structure.
Which materials are best for balcony construction?
Treated wood, composite, aluminum and fiberglass offer durability and good looks. The choice depends on your budget and the maintenance you want.
How do I inspect a balcony for damage?
Check the structure for cracks, signs of rot or corrosion, the condition of the sealing joints and the strength of the railings.
What does building a balcony cost?
The cost depends on various factors such as the chosen materials, the size of the project and the complexity of the structure. Contact us for a free quote tailored to your project.
Related services
Our other services
Complete exterior cladding, insulation and renovation solutions for homes and commercial buildings.
Recommended service
Cladding installation
Installation of exterior cladding from every brand. Trim finishing and replacement of existing materials.
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Insulation installation
Installation of insulating panels and optimization of the property's thermal barrier.
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Garage door
Installation in a single day, steel, aluminum or wood, motorized or manual, warrantied up to 20 years.
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Have a project in mind?
We guide you from planning to final cleanup. Get your free quote — our team travels at no cost to assess your project.