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Key takeaway
Compare spray foam and blown-in attic insulation for GTA homes. Learn where each option works best and when to choose one over the other.
01What is blown-in attic insulation?
Blown-in insulation is commonly used in attics because it can cover open attic spaces quickly and evenly. It works well for improving attic R-value and comfort when installed at the correct depth.
It is often used for attic top-ups and full attic insulation upgrades across Toronto and the GTA.
02What is spray foam insulation?
Spray foam insulation expands after application and can help seal gaps, cracks, rim joists, and certain attic or basement areas. It can provide both insulation and air sealing benefits depending on the application.
It is often used in targeted areas where air leakage is a major issue.
03Which one is better?
There is no one-size-fits-all answer. Blown-in insulation is often the practical choice for open attic coverage. Spray foam can be better for air sealing, rim joists, basement areas, and specific problem spots.
For many GTA homes, the best solution may involve proper air sealing plus blown-in attic insulation, with spray foam used only where it makes sense.
04How to choose the right option
Choose based on your attic condition, existing insulation, moisture concerns, ventilation, budget, and where the comfort problem is coming from.
A proper inspection can help confirm whether you need insulation removal, air sealing, blown-in insulation, spray foam, or a combination.
Frequently asked questions
Is spray foam always better than blown-in insulation?
No. Spray foam is useful for certain applications, but blown-in insulation is often a strong option for open attic spaces and attic top-ups.
Can spray foam be used in attics?
Yes, spray foam can be used in certain attic applications, but the attic design, ventilation, moisture control, and building needs must be considered.
What is better for attic top-up?
Blown-in insulation is commonly used for attic top-ups because it can cover large attic spaces evenly.
Written by
Attic Vac Insulation
A licensed and insured attic insulation contractor removing, installing and topping up insulation in homes across Toronto and the GTA, and renting the same 14 HP vacuum we work with.
