24/7 Call (833) 386-4537 and (833) ETOILES

Or (514) 365-6600

Our emergency service is available for all types of roofs. When your roof is damaged or there is water infiltration, one of our experienced master roofers will promptly repair your roof.  For each intervention, our employee takes pictures before and after the procedure and a fully detailed report is sent to you including our recommendations for ongoing work if needed.

Preventive Maintenance Program (PMP)

The preventive maintenance cycle drastically reduces the repair costs caused by large-scale problems. Preventative maintenance is one of the most cost-effective methods of preserving the roof of your building and of increasing the life span of your building. By focusing on periodic inspections to quickly detect and correct minor problems caused by the Quebec climate the risks of major problems and the emergency repair costs they entail are reduced.


The purpose of this phase is to know the current state of the roof and to make recommendations. This step can be performed in the following ways:

  • Thermal surveys by infrared camera (location of humid areas); Equipment: Fluke TI-400 camera
  • Non-Destructive Nuclear Hygrometer (Radioactive Isotopes); Equipment: Troxler Model 3216
  • Electronic resistivity readings (minimal impact) Equipment: Delmhorst model BD2100;
  • Visual inspection; visual inspection of the membrane and the flashing makes it possible to diagnose the condition of the roofing system; this also includes the inspection of the bridging supporting the roof.
  • Destructive test sections; if necessary, we perform test cuts to establish the exact composition of the roofing system.
  • Our roofing assessment report will give you one of the most comprehensive roof assessments available in the industry. The knowledge and experience of our team of professionals who are accredited by the Association des Maîtres Couvreurs du Québec (Québec Masters Roofers Association) will give you a thorough understanding of the current state of your roofing system to help ensure that it will achieve the maximum projected life.

Our roof inspection services provide the basics of an easy to manage program and the financial strength to maintain your roof. T3E will help you identify immediate roof gaps, potential problems and will develop a plan for current and scheduled roof maintenance. During our appraisal, a wealth of information such as residual life expectancy of components, extent of damage to exterior finishes (and interior finishes where applicable) and causes related to component degradation is gathered and summarized in a comprehensive report.


Infrared thermography is an inspection technique used to capture, record and quantify the surface temperature of a material or component. The imager (often referred to as a camera) captures the infrared radiation emitted and reflected by the materials. This radiation is translated into an “image” called “thermogram”. Thermography has a multitude of applications in a wide variety of industries. With regards to buildings, it is mainly used for the detection of contamination due to water in roofs. Aapplied to the roof, thermography works thanks to the high thermal capacity of the water. Water with a very high thermal capacity reacts more slowly to changes in temperature than the materials composing the roof. That is, water takes longer to heat up and more time to release the stored heat than most materials. These slow fluctuations (transient regime) create a temperature differential with the other materials of the roof. This differential is observed, recorded and interpreted by the thermograph using a thermal imager and specialized software. Our infrared camera detection services will give you the information you need to efficiently plan long-term roof repair and maintenance as well as save you money in the process. Thermography is used to make meticulous inspections without opening walls or ceilings. This approach detects: leakage in plumbing, water infiltration, hidden defects, ventilation problems, electrical overheating, mold defective drains, loss of energy, presence of insects or rodents or inadequate insulation.

When is snow removal required?

First, be aware that the older your roof is, the greater the risk of collapse. Other signs of urgent snow removal are:

  • You smell a strange sewer odor inside your building;
  • Due to a change in pressure, it is more difficult to open and close the entrance door;
  • You notice crackling noises from the structure.


At Toitures Trois Toitures, we know that it is essential to regularly clear the roofs of buildings.

The dangers of snow accumulation

During the winter, it is very dangerous to leave a thick layer of snow (and ice) piled on a roof. Here’s why :

  1. Snow may restrict or even block the drainage of water, resulting in overflows or accumulations of water on the perimeter or at the edge of the roof. This phenomenon could also give rise to what is known in the roofing industry as “infiltration by overflow”, a situation which certainly causes serious damage to the interior of the building and all the consequences that follow.
  2. Snow and ice could fall on people on the ground, causing serious injuries.
  3. Snow and ice could damage the roof by forming cracks and generating water infiltrations.
  4. The weight of snow and ice could cause the roof to sag, requiring costly repairs.
  5. Excessive accumulation of heavy snow and ice could cause collapse of the roof (a catastrophic, potentially fatal scenario).

Clearing the snow yourself? Yes, but…

For maximum safety, it is recommended to entrust the work of snow removal of roofs to a specialized company such as ours. Indeed, an inexperienced individual inadequately protected or lacking the right tools could be hurt during the snow removal.

Do not take unnecessary risks: get professional snow removal this winter! Thanks to our experienced employees, at Toitures Trois Étoiles, we clear of snow and de-ice each roof thoroughly, taking care not to damage it. In addition, we ensure that the physical integrity of passers-by is ensured at all times by establishing a perimeter on the ground.


Whether for a new commercial or industrial project, be it a small, medium or large project, our team of experts and master roofers as well as our impressive cutting edge fleet will know how to carry it out. In recent years, Toitures Trois Étoiles, has carried out projects of magnitude, both in surface area and technical challenge.


Whether it is a historic building or a large building requiring minor repairs or large-scale repairs, Toitures Trois Étoiles has the expertise and qualifications to permanently repair and waterproof imperfections that have developed on your roof whether by normal wear and tear or not.


Thermoplastic Membrane PVC Monocouche (Vinyl Polychloride)

The PVC (PolyVinylChloride) monolayer membrane appeared in Europe nearly sixty years ago. It resembles a pool liner, which is one of the applications of this type of membrane. PVC has several characteristics which make it an interesting material in applications such as roofing: it is rot-proof, it is very permeable to water vapor (up to 50X more than other materials) – which promotes rapid dyring. It has a very high coefficient of expansion (close to that of concrete and wood), it offers very little hold on the ice, which tends to slip. It allows the installation of a quasi-monolithic membrane since the joints are fused and finally it offers a very great ease of repair that is as durable as the original membrane since it is welded. In terms of disadvantages, PVC membranes are quite expensive and are subject to some drying over time due in part to the presence of plasticizers in the composition thereof.

Two-Ply Elastomeric Membrane

Composed of asphalt and rubber reinforced with polyester or fiberglass, modified bitumen roofs are a blend of traditional and modern roofing technologies. They are composed of styrene-butadiene-styrene (SBS) or plastomer (APP), its components give the membrane a greater elasticity and flexibility in face of changing temperatures, and its strength is its resistance to the perforation.

This two-layer membrane is usually installed with hot asphalt, cold adhesives or heat welded using a torch. Especially used on flat roofs, the elastomeric membrane roof (modified bitumen) has been installed for more than 40 years. The product offers a double layer (two-ply) of membranes fused together. The advantages: High elasticity and flexibility, durability, reliability and robustness at overlap joints.

Multilayers: Asphalt & Gravel

Laminating 4 or 5 layers of organic felt or fiberglass in asphalt or hot bitumen significantly reduces the risk of infiltration. This type of system was applied in the late 1800s in order to conform to the reflectance rules (white roof) of certain municipalities. It is possible to put in place a protective layer of white gravel.
Advantages: Good resistance to thermal shocks and building movements, High resistance to perforations.

Monolithic Membrane

The membrane made of liquid rubber is robust and flexible. It is used for waterproofing concrete structures and roofs including outdoor terraces, indoor and outdoor multi-level garage deck slabs, planting bins, tunnels, bridges, foundation walls. Ask for your membrane sample from one of our representative.


The TPO membrane was created to provide an economical alternative to the PVC-type membrane. It is composed of thermoplastic polyolefins and a polyester reinforcement. It combines the properties of the EPDM membrane (flexibility and durability) and the fused joints of the PVC membrane which make it an almost monolithic membrane. It is welded using hot air, as is done with PVC. Note however that unlike PVC, the use of solvent to weld joints is not possible. Like PVC, it is fast and easy to install and easy to repair, as it is available in rolls up to 10 feet wide. This type of cover meets the growing demand for energy-efficient roofs as it is available in white, beige and gray. This type of membrane offers a very good durability (UV rays, ozone, etc.). Unlike PVC membranes, the TPO membrane contains no plasticizer, which makes it theoretically less prone to drying. In terms of disadvantages, TPO has been used for a shorter period of time on roofs than products such as EPDM and PVC. This implies a shorter evaluation period of the product. It should also be noted that the temperature range for correctly welding the membrane seals is much less than for PVC, which can be a problem if adequate precautions are not taken. Finally, the manufacturing formulas vary greatly from one manufacturer to another, which can greatly alter performance.

The membrane (single-layer) EPDM.

This membrane is composed of ethylene, propylene, diene and monomer. In short, it is a synthetic rubber that emerged more than 50 years ago in the United States. It has great resistance to the strong rays of the sun and remains elastic in the cold of winter. The EPDM membrane is increasingly the first choice for large new commercial buildings. There are three main types of system either: independent systems with gravel ballast, a system integrally glued to the adhesive or asphalt and finally a mechanically fastened system.

The advantages of EPDM roofing

EPDM roofing has a minimum life span of 30 years. Because the EPDM membrane’s environmental footprint is low, it is renowned for being an eco-friendly roofing solution due to its longevity and recyclability. Its ecological cycle is at all levels: from manufacture to the end of sustainable life.