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Flat Roof Insulation Service

Flat Roof Insulation in Montreal

If you observe any deterioration in your building’s condition or a decline in indoor comfort, it is crucial not to neglect your roof insulation. Contacting our skilled roofers is the most effective approach to identify the underlying issue and take appropriate action to ensure optimal comfort in your building.

Our roofers will conduct a comprehensive examination and then determine the most suitable course of action based on your roof, budget, and the severity of the situation. With our expertise and professional equipment, our team will give you peace of mind.

If you live in the Greater Montreal area and notice any problems with your flat roof, contact our flat roof insulation service.

Request a free quote 514-755-8648

Optimize flat roof insulation

Proper insulation for a flat roof is essential to improve thermal comfort, reduce heat loss, and protect the structure from moisture. Choosing the right insulation for a flat roof and following the recommended insulation thickness helps optimize the building’s energy efficiency and prevent water infiltration.

Best Solutions for Insulating a Flat Roof

Flat roof insulation relies on several techniques, depending on the building structure and thermal requirements:

  • Inverted insulation: The insulation is placed above the waterproofing membrane, protecting it from climate variations and extending its lifespan. This method is ideal for accessible roof terraces.
  • Conventional insulation: The insulation is placed beneath the waterproofing membrane, ensuring excellent thermal insulation but requiring a more technical installation.
  • Interior insulation: Used in renovations when exterior access is limited, this method involves installing insulation underneath the roof, although it is less effective for flat roofs.

Best Materials for Flat Roof Insulation

The choice of insulation material depends on the desired thermal performance and moisture resistance:

  • Extruded polystyrene (XPS): Lightweight, easy to install, and highly resistant to moisture, it is commonly used for flat roof insulation.
  • Rock wool: Provides excellent thermal and acoustic insulation while offering good fire resistance and protection against water infiltration.
  • Polyurethane (PU): Offers high insulating performance with minimal thickness, making it ideal for optimizing insulation without overloading the structure.

The required insulation thickness for a flat roof depends on thermal regulations and climate conditions. Generally, it ranges between 100 and 200 mm, depending on energy efficiency goals.

Key Steps for Effective Flat Roof Insulation

Before insulating a flat roof, proper surface preparation is crucial:

  1. Inspect and repair the existing membrane to prevent water infiltration.
  2. Install a vapor barrier to reduce condensation and protect the insulation.
  3. Place the insulation following the appropriate thickness and installation techniques.
  4. Apply a waterproofing membrane to ensure optimal protection against water.
  5. Check ventilation to prevent moisture buildup under the roof.

If you have an emergency or a question about your roof, contact our experts!

Do you have an emergency or a question about your roof? No need to worry! Our roofers are here to help. With years of industry experience, our team of professionals can answer all your questions and solve all your roofing problems, from emergency repairs to regular inspections and complete replacements.

GET A QUOTE 514-755-8648

Get your flat roof insulated by professionals

Just as ventilation plays a key role in the performance of the roofing system, insulation work must be as accurate as possible to maintain the entire building in good condition.

For effective roof insulation, there must be a space of at least 75 mm (3 1/2 in.) between the flat roof and the new insulation for air circulation. If there is not enough space in the attic, our specialized roofers can elevate the structure to create an air gap. If necessary, they can also install a vapour barrier and use insulation to maximize the system’s efficiency. Thanks to our team’s know-how, the right methods are used. Above all, is assured, all in compliance with current environmental standards.

Entrusting your roof insulation to Les Couvreurs Duro-Toit is therefore the best way to guarantee flat roof lifespan, regardless of its cladding.

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