Crawlspace Insulation in Peterborough and Kawartha Lakes
Protect your crawlspace from moisture, air leaks and energy loss with a closed-cell spray foam insulation.
Why Closed-Cell Spray Foam Is Best for Crawlspace Perimeter Walls
Closed-cell spray foam is often considered one of the best insulation options for a crawlspace perimeter wall because it provides 3 critical benefits in 1 application: insulation, air sealing, and moisture control.
For crawlspaces, that combination matters.
A crawlspace is one of the most vulnerable areas of a home. Without the right insulation, it can contribute to heat loss, air leakage, increased moisture, mold risk, poor indoor air quality and higher hydro bills.
What Makes Closed-Cell Spray Foam Effective in a Crawlspace?
Closed-cell spray foam is made with tightly packed cells that create a dense and durable insulation layer. This structure gives it strong thermal performance and helps reduce unwanted heat transfer between the crawlspace and the rest of the home.
Because of its high R-value, closed-cell spray foam is especially effective in areas exposed to temperature changes, including crawlspaces and perimeter foundation walls.
A High Performance Crawlspace Insulation Solution
Closed-cell spray foam is more than insulation. It is a crawlspace performance solution that helps improve thermal control, air sealing and moisture protection in 1 application.
By insulating the crawlspace perimeter wall it helps create a cleaner, drier and more stable environment while supporting improved comfort, reduced drafts and better energy performance.
Intumescent Coating for Spray Foam Insulation
Intumescent coating helps protect spray foam insulation when fire protection is required. Under the Ontario Building Code, spray foam insulation needs either a thermal barrier or an ignition barrier, depending on the type of foam and how it is being used.
An intumescent coating can work as either one, as long as it meets the required performance standards.
How Intumescent Coating Works
Intumescent coating reacts to heat. When temperatures rise, the coating expands and creates a thick insulating layer over the spray foam.
That layer helps keep the foam from igniting and helps slow the spread of fire.
Intumescent Coating as a Thermal Barrier
As a thermal barrier, intumescent coating can be applied directly to the surface of spray foam insulation.
It helps protect the foam from heat and ignition by creating a heat-resistant layer.
Intumescent Coating as an Ignition Barrier
As an ignition barrier, intumescent coating can be applied over a layer of spray foam insulation with a fire-resistant coating.
In this use, the coating helps keep the foam from igniting if it is exposed to flames and helps slow fire spread.
Ontario Building Code Requirements
Intumescent coatings used with spray foam insulation must meet the requirements outlined in the Ontario Building Code.
That can include minimum coating thickness, adhesion strength, durability and approved fire protection testing. The coating also needs to be tested and approved by a recognized testing agency to confirm it meets the required fire protection standards.
Fire Protection for Spray Foam Insulation
When used properly in accordance with the Ontario Building Code, intumescent coating is an effective fire protection option for spray foam insulation.
The right coating, applied at the right thickness and tested to the right standard, helps support code compliance and improves the fire performance of the insulation assembly.
Crawlspace Insulation FAQs
Yes. Closed-cell spray foam is ideal for crawlspace perimeter walls because it provides insulation, air sealing and moisture control in one application.
Insulating crawlspace perimeter walls helps reduce heat loss, drafts, moisture issues, mold risk, poor indoor air quality and higher hydro bills.
Closed-cell spray foam helps seal air leaks and reduce moisture transfer, creating a drier, more stable crawlspace environment.
Yes, spray foam insulation in crawlspaces generally requires a thermal barrier or ignition barrier under the Ontario Building Code.
Yes. We provide closed-cell spray foam crawlspace insulation for homes in Peterborough, the Kawarthas and surrounding areas.