About Integrity Insulation
Integrity Insulation is Sarnia's leading full-service residential and commercial insulation company, serving homeowners, custom home builders, and property managers across Sarnia, Point Edward, Bright’s Grove, Corunna, Petrolia, and surrounding areas. As a locally owned and operated business, Integrity Insulation specializes in evidence-based building performance solutions designed to identify root causes of energy loss, enhance moisture control, and significantly reduce heating and cooling costs. From new construction to retrofits, the company offers a complete range of professional installation and remediation solutions, including high-R-value spray foam, batt and poly, and blown-in fiberglass or cellulose systems. Integrity Insulation prioritizes long-term client value through transparent advice, precise workmanship, and dedicated support in navigating provincial and federal energy efficiency rebate programs.
Services Offered
Opening Hours
- Monday8 AM to 5:30 PM
- Tuesday8 AM to 5:30 PM
- Wednesday8 AM to 5:30 PM
- Thursday8 AM to 5:30 PM
- Friday8 AM to 5:30 PM
- SaturdayClosed
- SundayClosed
Location
Open in Maps100 East Street S, Sarnia
Customer Reviews
Ryan VanderVeer
GoogleFebruary 2026
Mark and his crew are excellent to work with. Quick response to every question I had and upfront about other work I should consider to get the results I’m looking for. The crew are a great group of guys who are very professional and would keep me informed of what all was happening even without me asking. I would also like to say how great the receptionist/office admin is. Even if she is unable to take your call she is very quick to call back and is very friendly. This goes a long way to make you feel confident you chose the right company even before anything is done.
Response from owner
Ryan, thank you for the amazing feedback! We’re so glad you had a great experience with Mark, the crew and the office staff. Clear communication and professionalism are priorities for us, so your comments truly mean a lot. We appreciate the trust in us!
Shelley Smoke
GoogleJanuary 2026
I’m very pleased with the job done by Integrity and their team. From the quote to installation Mark and the crew kept me updated on the how and why of what they were doing. My floors are warm, rooms are cozy and no more ice jams on the roof. I highly recommend Integrity Insulation. Their name says it all.
Response from owner
Shelley, we really appreciate you taking the time to share your experience! It was a pleasure working with you. Hearing that your home is warmer and more comfortable - and no more ice jams - is exactly why we do what we do. I’ll be sure to pass on your kind words to Mark and the team. Thank you again for the recommendation.
Tim Macoritto
GoogleJanuary 2026
Excellent people to work with. The finished product works great (my garage is finally warm!). The crew were very knowledgeable, courteous and cleaned-up very well afterwards. Highly recommended.
Response from owner
Thank you for the great review! We’re happy to hear you were satisfied with the insulation and our service. We really appreciate your support. Enjoy your garage!