Improving insulation

When the roof, foundation and exterior walls of your home are well insulated, they help your home resist better to cold in the winter and excessive heat in the summer. They also make it easier to maintain a more comfortable indoor temperature and control heating costs. This explains why various renovations targeting the improvement of the home’s insulation are eligible under the Rénoclimat program.

The energy evaluation report that you will receive will indicate the most pertinent type of insulation work to carry out on your home.

• Roof
• Exterior walls
• Foundation
• Exposed floors

• Insulation work must target at least 20% of the total surface area of the roof to be entitled to financial assistance.
• If the roof is composed of more than one type of roof (for example, attic, cathedral ceiling, flat roof), the amount will be calculated on a pro rata basis, i.e. on the basis of each roof type and its respective surface area.

Before undertaking your renovations, you can consult the section on Practical advice to learn more about roof insulation.

• If you are planning to change the exterior siding of your walls, it would be a good idea to improve their insulation as well.
• At least 20% of the total surface area of the exterior walls (common walls not included) must be insulated to be entitled to financial assistance.

• A different calculation method is used for semi-detached and row homes.

• Insulation work must target at least 20% of the total surface area of the foundation walls (common walls not included) to be entitled to financial assistance.
• When there is a basement and a crawl space, financial assistance is calculated on a pro rata basis, i.e. on the basis of their respective surface area.
• A different calculation method is used for semi-detached and row homes.

Foundation with a basement

It is important to check all the required conditions by consulting the Participant's Guide (in French only).

Foundation with a crawl space

Before undertaking your renovations, you can consult the section on Practical advice to learn more about how to insulate foundations. You can improve the insulation of your home’s foundation by insulating from the interior or the exterior based on the condition of the walls, space limitations and regulations.

Exposed floors are floors that are located above an unheated space (for example: a floor above a non-heated garage).