Knox Insulation & RoofingInsulation contractor in Gravenhurst, ON

Knox Insulation & Roofing is ranked #3 of 16 insulation contractors in Gravenhurst by CR Score, with 58 out of 100 as of October 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

Knox Insulation & Roofing is open 7 days a week. Its listed hours are Monday to Sunday, 7 AM – 6 PM. On Saturdays it is open 7 AM to 6 PM, and on Sundays 7 AM to 6 PM. Hours come from the business listing; holiday hours may differ.

Serves Gravenhurst and 9 towns within 40 km: Keswick, Innisfil, Barrie, East Gwillimbury, Orillia, Newmarket, Uxbridge, Aurora and Angus. The list is based on the business's location and the usual service radius for insulation. Confirm your address is covered when you call.

Knox Insulation & Roofing has a rating of 5.0 from 7 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

Call Knox Insulation & Roofing on (705) 796-1619. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.