Answers to a few common questions
Here are answers to the questions we get asked most often. If you don’t find the answer to your questions, feel free to contact our friendly team. They’ll be happy to answer you in a timely manner.
How much does an Interlock® aluminum roof cost?
The cost of an Interlock aluminum roof ranges from $10 to $12 per square foot. This price includes material and labour.
Please note that the price varies with the complexity of the roof design and the labour at hand.
Is aluminum roofing noisy when it rains?
No. Unlike sheet metal roofs, which are very noisy, our product is installed over a protective membrane that's glued directly onto the plywood. This totally absorbs the sound of rain.
Is Interlock really guaranteed for life?
Yes. So long as you remain the owner of your home, your roof is guaranteed for life. If you sell or bequeath it, the warranty is transferred to the next owner for up to 50 years. Read the complete warranty for details.
Can you walk on an aluminum roof?
The centre is the strongest point of an aluminum tile. Therefore you have to walk in the centre of each tile. However, note that you don't need to remove snow from this type of roof.
Can the roof be damaged by hail?
The chances of hail damage are quite slim. The product has been tested to withstand hailstones measuring 2.5 cm in diameter, which is quite rare in Quebec.
Does the colour fade over time?
No. Each component is coated with the Alunar Coating System embedded with a polytetrafluoroethylene surface protector. These are resistant to the UV rays responsible for discoloration. Using a process called electrolysis, a protective layer that's harder and more resistant than raw aluminum is applied onto the surface. This process protects the surface from any discoloration. Roofs installed 20 years ago still look the same as the day they were installed.
Can the roof withstand high winds?
Yes. Wind resistance has been tested: the product was exposed to 275 km/hr winds and suffered no damage. Our warranty covers winds of up to 190 km/hr.
Can I buy the Interlock® product and install it myself?
No. To ensure a compliant installation and for quality-control of the product's effectiveness, your aluminum roof must be installed by Toits Permanents du Québec's certified installers. This will allow you to be covered by the lifetime warranty on the product and the 10-year warranty on the installation.
How long does it take to install an Interlock® roof?
Depending on the complexity of the roof, installation can take 2 to 5 days.
Do you offer a variety of colours?
Yes. We have over 10 colours in each of 2 finishes (slate and shingle). See for yourself.