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Great Northern InsulationInsulation contractor in Gravenhurst, ON

Great Northern Insulation is an insulation contractor at 1027 Elwell Park Rd, Gravenhurst, ON P1P 1R1, ranked #1 of 16 insulation contractors in Gravenhurst and rated 4.7 from 111 Google reviews. Open Monday to Friday.

Gravenhurst, ONUpdated 0 paid placements in any rankingHow we rank

Call (800) 265-1914Website ↗

Key facts

Key facts about Great Northern Insulation
Address1027 Elwell Park Rd, Gravenhurst, ON P1P 1R1Get directions
Phone(800) 265-1914
Websitegni.ca
HoursMonday to Friday: 7:30 AM – 5 PM
Google rating4.7 from 111 Google reviews

Trades

Each trade shows the evidence we matched it on.

Service area

Serves Gravenhurst and 2 towns within 40 km: Bracebridge and Orillia.

Based in Gravenhurst, ONView on map

Opening hours

Opening hours for Great Northern Insulation
DayHours
Monday7:30 AM – 5 PM
Tuesday7:30 AM – 5 PM
Wednesday7:30 AM – 5 PM
Thursday7:30 AM – 5 PM
Friday7:30 AM – 5 PM
SaturdayClosed
SundayClosed
  • Open evenings — no
  • Open Saturdays — no
  • Open Sundays — no

Typical insulation prices

Typical insulation prices
JobLowTypicalHigh
Attic insulationPer attic: typical range of customer-reported jobs (about $1 to $3 per sq ft). US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026)CA$2,390CA$2,950CA$3,510

Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.

Reviews

ContractorsRanked reviews

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Google

4.7from 111 Google reviews

Hired Great Northern Insulation? Write a review

Questions about Great Northern Insulation

How is Great Northern Insulation ranked in Gravenhurst?

Great Northern Insulation is ranked #1 of 16 insulation contractors in Gravenhurst by CR Score, with 62 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.

What are Great Northern Insulation’s hours?

Great Northern Insulation is open Monday to Friday. Its listed hours are Monday to Friday, 7:30 AM – 5 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.

What areas does Great Northern Insulation serve?

Serves Gravenhurst and 2 towns within 40 km: Bracebridge and Orillia. The list is based on the business's location and the usual service radius for insulation. Confirm your address is covered when you call.

What do Google reviews say about Great Northern Insulation?

Great Northern Insulation has a rating of 4.7 from 111 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.

How do I contact Great Northern Insulation?

Call Great Northern Insulation on (800) 265-1914. The business is at 1027 Elwell Park Rd, Gravenhurst, ON P1P 1R1. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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