Question 1

How much does rim joist insulation cost in Canada?

Accepted Answer

Costs vary by material: spray foam averages $2–$5/sq.ft., while rock wool is $1–$3/sq.ft. Professional installation ensures optimal ROI.

Question 2

Can I insulate rim joists myself?

Accepted Answer

Yes, but DIY methods may lack the precision of professional air-sealing. For cold climates, experts recommend spray foam for maximum efficiency.

Question 3

What’s the best material for Canadian winters?

Accepted Answer

Spray foam (closed-cell) is ideal for its high R-value and air-sealing properties. Rock wool is a fire-resistant, eco-friendly alternative.

Question 4

Does rim joist insulation require a vapor barrier?

Accepted Answer

Yes. Use acoustical sealant or tuck tape to seal seams and prevent moisture intrusion.

Question 5

How does rim joist insulation align with the Greener Homes Initiative?

Accepted Answer

Proper insulation qualifies for grants under Canada’s Greener Homes program, reducing carbon footprints and energy costs.

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