Keep heat in and drafts out

Insulation acts as a barrier to help keep warm air where you want it: it’s a material used to fill the spaces behind walls and above ceilings, in hard-to-reach places and even small gaps and crevices. Because heat flows naturally from warmer areas to cooler ones, insulation slows heat flow by reflection and/or absorption, which in turn increases energy efficiency and improves comfort levels.

In winter, heat moves directly from warm spaces to unheated spaces and outdoors. During summer months, heat moves from the warm outdoors to the cooler interior of your building. Adding insulation helps stop this heat transfer.

Why upgrade?

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    Reduce heating and cooling use.

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    Improve occupant comfort.

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    Save on ongoing energy costs.

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    Lower noise levels.

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    Reduce wear and tear on HVAC or boiler system.

Which buildings can benefit?

Multi-unit residential buildings


Commercial office buildings

Long-term care facilities

What you need to know about insulation

Common types of insulation include cellulose, fibreglass, rock wool, spray foam and rigid board. The type of insulation your building needs depends on where it will be installed, what R-values are required and your budget. Some types of insulation can also help minimize noise coming from outside (sirens, traffic, etc.), further improving occupant satisfaction.

Insulation effectiveness is measured with an R-value. “R” stands for resistance to heat flow. The higher the R-value, the more you reduce energy loss. Determining which R-value is right for your building depends on where in Ontario it’s located. A qualified contractor can help you choose the best option.

Typically, insulation is added to the following areas:

Building envelope

  • Roof space
  • Ceilings
  • Walls

HVAC or boiler system

  • Piping
  • Ducts
  • Steam traps
  • Hot water storage tanks

Why work with us? Free expert help, at every step

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We’ll help you identify energy-efficiency opportunities.
See a detailed calculation of potential savings with incentives.
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Get incentives when you implement our recommendations.

Incentives for insulation upgrades

Our Energy Solutions Advisors can help identify and develop your project, and take advantage of incentives through the following program:

Commercial Custom Retrofit Program

Get up to 50 percent of incremental project costs for insulation upgrades, up to $100,000.

See details

Industrial Custom Engineering Program

Get help identifying, prioritizing and implementing energy-saving projects, with up to 50 percent of incremental project costs covered.

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Connect with an Energy Solutions Advisor

We’ll help you find ongoing savings and get your project underway.

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