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Insulating your home

  • Residential
Isoler Res

Did you know that walls, roofs, fl oors and windows can account for about 75% of your home’s heat loss?1 Insulating your home to trap hot air in winter and cool air in summer is one of the first steps you can take to use less and use better—and reduce your energy bill!2

Insulate more, spend less!

Four benefits of good insulation

  • Energy Saving = lower bills and reduced GHG emissions
  • Increased comfort
  • Reduced maintenance: a well-insulated home ages better
  • Higher resale value

Breakdown of thermal loss

energy efficiency - Insulating your home

Good to know 

There are different ways to insulate a home: from inside, from outside, or by using self-insulating walls for new builds. You can also combine indoor and outdoor. This is called mixed insulation.

You don’t need to do everything at once. You can insulate your home in stages. But it is estimated that up to 50% of heat can escape through walls (20%3) and the roof (30%4). That’s where good insulation will make the biggest difference. High-performance windows and well-insulated floors can also reduce air and heat loss.

Planning some work?

Kill two birds with one stone and take the opportunity to improve your home’s insulation.

Grants and action plan

Your action plan for an efficient insulation project 

  • Find out about available financial assistance programs (Énergir does not offer grants to residential customers for this type of work).
  • Hire a qualified contractor. A recognized professional will ensure that insulation materials and techniques meet standards and maximize results.
  •  54%

    Heating and cooling alone account for 54% of energy consumption of Quebec households.5 That’s over half their energy bill.

Go further

Learn more about insulation

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