Roof restoration2026-09-23T15:21:33-04:00

Commercial roof renovation

Expertise, durability, and energy performance for large-scale roofing projects in Montreal and surrounding areas.

Optimization of building performance

Beyond simple repairs, our interventions enhance the building’s waterproofing, insulation, and energy efficiency.

Comprehensive and integrated technical expertise

We assess the building envelope and coordinate all related work to ensure a smooth, hassle-free project.

Turnkey management of complex projects

No matter the type of building, we handle the complete renovation, ensuring full compliance with standards and integrated coordination.

Re-roofing
designed to last

At LK Toitures, commercial roof renovation is much more than just replacing materials. It’s a strategic intervention designed to ensure waterproofing, durability, and energy efficiency for high-value buildings. Thanks to our specialized expertise, we work on complex, large-scale roofs while addressing the specific needs of commercial and industrial buildings.

Travailleurs en pleine réfection de toiture commerciale sur un bâtiment industriel, avec retrait de l’ancien revêtement isolant avant installation d’un nouveau système d’étanchéité.
Surface de toit en panneaux OSB nouvellement installés dans le cadre d’une réfection de toiture commerciale, prête pour l’étape suivante d’imperméabilisation.
Toiture commerciale plate recouverte d’un nouveau revêtement bitumineux, avec ouvriers effectuant les dernières finitions dans le cadre d’une réfection de toiture commerciale.
Toiture commerciale en cours de réfection, recouverte d’une membrane d’étanchéité neuve brillante, illustrant une étape clé dans l’imperméabilisation de toiture industrielle.
Ouvrier procédant à la réfection de toiture commerciale à l’aide d’une torche pour souder une membrane bitumineuse, assurant l’étanchéité d’un toit plat industriel.

Our approach: beyond roof renovation

Before any work begins, our team conducts a thorough analysis of the roof and related building components. This assessment allows us to offer tailored solutions that match the existing structure, the building’s purpose, and its exposure to weather conditions.

Our roof renovation services include:

Demolition of existing structures
Safe removal of obsolete materials or elements prior to reconstruction. A key step in building a solid foundation for the future.

Complete waterproofing renovation
Application of high-performance waterproofing systems (elastomeric membrane, TPO, etc.) tailored to climate conditions and building usage.

Concrete repair and load-bearing structures
Rehabilitation of slabs, beams and other structural components to ensure roof stability and durability.

Installation and refurbishment of skylights
Updating or replacement of skylights to ensure better insulation, watertightness and optimal lighting.

Integrated mechanical and electrical work
Moving, modifying or replacing mechanical units, conduits, wiring and other technical elements during refurbishment.

Wall cladding and repair of vertical facings
Modernization or restoration of facades adjacent to the roof to create a homogeneous, high-performance envelope.

Earthworks, landscaping and excavation
Management of access, drainage or greening around the building as part of wider roof-related work.

Joinery and finishes
Integration of structural elements, framing, soffits or other architectural details required for a neat finish.

Waterproofing and coating of terraces
Specialized work on roof terraces, including membranes, slabs, railings and finishes, particularly for condominium projects.


Each project is overseen by a dedicated project manager who ensures smooth coordination throughout every phase of the worksite.

Our achievements
roofing repairs

FAQ

Will the roof replacement work disrupt our business operations?2026-09-21T14:47:19-04:00

In most cases, business operations can continue during the roofing work. We carefully plan each project to minimize disruptions to your operations, employees, and customers.
Depending on the scope of the project, temporary restrictions may apply to roof access, parking areas, or certain parts of the building.

What is the best time of year to replace a commercial roof in Quebec?2026-09-21T22:32:57-04:00

Spring, summer, and early fall are generally the best times to replace a commercial roof. More stable temperatures make membrane installation easier and reduce the risk of weather-related delays.
However, some modern roofing membranes can be installed during the winter when site conditions permit. Careful planning remains the best way to ensure optimal installation conditions.

What are the main signs that a commercial roof needs to be replaced?2026-09-21T14:42:44-04:00

The main warning signs include:
Recurring water leaks
Significant cracks or tears in the roofing membrane
Blisters or bubbles
Open or deteriorated seams
Persistent ponding water
Damaged flashing
Moisture or deterioration in the insulation
Increasingly frequent repairs
When a roof is nearing the end of its useful life and repair costs continue to rise, a complete roof replacement is often the most cost-effective long-term solution.

What warranties are available for a new commercial flat roof?2026-09-21T14:42:04-04:00

LK Toitures offers various warranty programs covering both labour and materials. Additional warranty options may also be available through roofing system manufacturers and the Association des maîtres couvreurs du Québec (AMCQ).
The standard warranty provided by roofing contractors covers a period of five years from the date the roof replacement work is completed or the installation of a new roof.

Contact your representative for more information.

How do I decide between repairing my roof and replacing it completely?2026-09-21T14:41:07-04:00

Roof repairs generally come before a complete replacement, as regular maintenance can extend the lifespan of your roofing system. A roof replacement becomes necessary when repairs are no longer sufficient to prevent water infiltration.
Roof replacement may involve partially or completely removing and replacing the roofing components, sometimes down to the roof deck. Before making a decision, contact LK Toitures. Our professionals can thoroughly assess your building’s needs and recommend the most suitable solution.

They chose LK Toitures

Very satisfied with the work done and the service. Your team was friendly, efficient, and professional, with great attention to quality workmanship. No water leaks have been noticed since the initial repairs.

Justin Hugues-Deraiche – Into Inc

The service was impeccable! Nothing to complain about, my technician had only positive feedback about the service team on-site.

Xavier Sylvain-Salvador – Ingétec

As far as I’m concerned… Quote, appointment, and report after the visit: A-1. Scheduling the work appointment – A-1. As for the day of the work, I received no feedback, so I presume it’s also A-1… If there are any comments, I will let you know. Invoice and report, A-1. Keep it up! (Note: getting your quote report so quickly after Dany’s visit is really awesome!)

Richard Bertrand - Daniel Abergel

A1 service. I haven’t received the service report. I saw the team when they arrived but not when they left.

Jean-Guy Arseneault – Boulart

We were very satisfied with your service and the work done. Your employees were very professional and friendly.

Caroline

We had excellent communication, and the team on-site seemed very professional and conscientious. I still need to visit the site to inspect the completed work.

Thiéry Roy – CISSSLAU

Big thanks again for the great work! I really appreciated working with your company. This certainly won’t be the last time we get in touch.

Vincent Sabbagt

Thank you for your intervention. The work was well done, and the site and parking area were clean as well. I really appreciate it, especially since we had to ask the neighbor for permission to use their parking space. Communication was good, as were customer service and work quality—everything was excellent.

Tiberius

Quality of your work… EXCELLENT

Communication… EXCELLENT

Team… EXCELLENT

Customer service… EXCELLENT

Neil Swail

Here are my observations: Outstanding work by Andrew, who was always available and highly attentive to our needs. The team of workers did an excellent job solving our roofing issues. Very happy to work with LK Roofing.

Christian Fortin – Lineage

Accreditations

Nous sommes fiers de vous présenter nos partenaires d’affaires avec qui nous avons su développer une longue relation de confiance! LK Toitures est membre certifié chez :

Affiliations

Nos affiliations professionnelles sont :
Licence R.B.Q. : 8103-3979-07

Ready to restore your commercial roof?

Tell us about your project!

Our specialists are available to assess your project, advise you on the best material options, and provide a complete and detailed quote. Take advantage of our expertise for a high-performance, durable roof tailored to your commercial needs. Contact us today for a quote.

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