Fiberglass vs Rockwool – Which Is Better for Your Basement?
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When it comes to insulating a basement, most people ask the same question: should I use fiberglass or Rockwool? Both products are popular in Ontario, and both have their place. The key is knowing the difference so you can choose the right material for your job.
Fiberglass Insulation – Affordable and Reliable
Fiberglass batts, like Johns Manville or CertainTeed, are widely used for basements and attics.
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Lightweight and easy to install
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Lower cost per square foot
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Great thermal performance for Canadian winters
👉 [See Fiberglass Batts in Stock]
Rockwool Insulation – Strong and Fire-Resistant
Rockwool Comfortbatt and Safe’n’Sound are made from stone fibers, making them much denser than fiberglass.
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Excellent fire resistance
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Great for soundproofing basements and interior walls
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More rigid, so it stays in place during installation
👉 [See Rockwool Comfortbatt and Safe’n’Sound]
Which One Should You Use?
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If you’re looking for cost savings and energy efficiency, fiberglass is usually the best pick.
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If you want extra fire safety or soundproofing, Rockwool is worth the investment.
Most contractors actually use a mix — fiberglass in attics and walls, Rockwool where fire or sound is a concern.
Buy Local in Markham
At Confirmed Construction Materials, we stock both fiberglass batts and Rockwool insulation. Contractors don’t have to worry about stockouts at big box stores — we keep products ready for pickup or delivery.
Our warehouse is at 2600 John Street, Unit 208, Markham. Call Ali at 647-702-3017 to confirm availability and place your order in advance.
👉 [Contact Us]
Final Word
Both fiberglass and Rockwool can do the job. The right choice depends on your project goals and budget. The good news is, whichever you choose, you can pick it up right here in Markham.
Best prices for insulation in Markham. Reach out today to get your deal.