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Insulation

Insulation

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R-12 Fiberglass Batts ($0.52ft²)
$75.00
R-8 Fiberglass Batts ($0.36ft²)
$80.00
XPS | 3" x 24" x 48" ($3.75/ft²)
$180.00
XPS | 2" x 24" x 48" ($2.5/ft²)
$200.00
XPS | 3" x 24" x 96" ($3.75/ft²)
$360.00
XPS | 2" x 24" x 96" ($2.5/ft²)
$400.00
XPS | 2" x 24" x 48" ($2.5/ft²)
$160.00
R-6 High-Density Rockwool Boards ($1.5/ft²)
$60.00
R-8 Rockwool Rigid Board ($1.5/ft²)
$96.00
R-20 Fiberglass Rolls ($0.75/ft²)
$100.00
R12 Fiberglass Rolls ($0.38/ft²)
$90.00

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Material estimator

Figure out exactly what you need.

Pick your insulation, enter the area, and get the bundle count and material cost instantly. No guesswork. No ordering half a bundle that does not exist.

Prices are tax included in Canadian dollars. Orders over $1,000 automatically receive Therma Source's 5% bulk discount.

Not sure what R-value you need? Use the R-value calculator.

Insulation cost calculator

How much material do you need?

Select a product and enter the square footage. Your estimate updates instantly.

0 bundles

Total, tax included $0.00

Enter your square footage to calculate the order.

Confirm availability with Therma Source

Ontario SB-12 quick guide

Not sure what R-value you need?

Pick the part of the building you are working on. We will show you a practical planning target for Eastern Ontario and explain what the code number actually means.

Built around the 2024 Ontario Building Code SB-12 tables for Zone 1, including Ottawa, Winchester, Kingston, Cornwall and Smiths Falls.

R-value recommendation

What are you insulating?

Choose the project scope and assembly. Your result updates instantly.

This is a full-system requirement.

Insulation is only one part of the result. Framing, continuous insulation, sheathing, finishes, air films, thermal bridges and other layers affect the effective R-value of the complete assembly.

Insulation portion
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