Top-Rated Insulation Installers in Peterborough, ON

3 local companies ranked by 185 Google reviews. Free to compare, no sign-up.

Ratings collected September 2026 · Page updated September 30, 2026

3Companies
185Google reviews
4.9★Average rating
Sep 2026Data collected
Ranked by Google reviewsNever paid forFree to compare

Short answer: The top-rated insulation installers in Peterborough are Just Spray It (5.0★, 150 reviews), Insulation Done Right Peterborough (5.0★, 15 reviews), KB Insulators (4.4★, 20 reviews).

Insulation installers in Peterborough, ranked 3 listed

Sort by
  1. 1
    Just Spray ItTop pickMost reviews
    5.0 (150 Google reviews)
    738 George St N, Peterborough, ON K9H 3T3
    Call (705) 998-3626WebsiteGoogle reviewsDirectionsEmail [email protected]
  2. 2
    Insulation Done Right PeterboroughTop pick
    5.0 (15 Google reviews)
    20 York Dr., Peterborough, ON K9J 6X4
    Call (289) 217-9848WebsiteGoogle reviewsDirections
  3. 3
    KB InsulatorsTop pick
    4.4 (20 Google reviews)
    530 Lindsay Rd, Peterborough, ON K9J 6X3
    Call (705) 740-7200Google reviewsDirections

Together these 3 companies average 4.9★ across 185 reviews. Just Spray It has the most reviews (150).

Ranked by Google rating weighted by review count, collected September 2026. Rankings are never paid for. How we rank and how we make money.

Listed here? Get your free top-rated badge for your website.

What a insulation costs in Peterborough

Typical installed priceVaries by area

Price depends on which areas you insulate (attic, walls, basement) and how much air sealing is needed. Ask each company for a price per area and the R-value you end up with, so quotes are easy to compare.

Insulation rebates open in Peterboroughup to $3,600

That could cut your cost by up to $3,600 if you qualify. Most rebates have rules (income, your current heating, a registered contractor, approval before work starts).

Rebates: our verified program data, checked monthly. Always confirm the exact amount for your home.

Get free quotes from these insulation installers

Pick up to 3 companies and tell them what you want done. We send your request straight to them. Free, no obligation.

Which companies should quote?
What do you want done?

We only share your details with the companies you pick, and never sell them. Privacy policy.

Why insulation matters in Peterborough

In Peterborough, the average January low is -11°C, colder than 89% of the 123 cities we track. With winters this cold, the attic is usually the best place to start. Ask the installer to seal air leaks around lights, pipes and the attic hatch before adding insulation, or much of the benefit is lost.

Most rebate programs pay only after an energy assessment, and some need one before the work too. Book it first.

Source: Open-Meteo historical weather data, 2015-2024.

Before you hire a insulation installer

  1. Ask whether they will air-seal before insulating, and what they will seal (attic hatch, pot lights, pipes, top plates).
  2. Ask for the R-value before and after for each area, and the material and depth they will install.
  3. Ask whether your rebate needs an energy assessment before and after the work, and who books it.
  4. Ask how they handle ventilation and any old insulation that could contain vermiculite (asbestos risk).

Before you call anyone, check what insulation rebates you can get in Peterborough. Many programs require approval or a registered contractor before work starts.

Planning more upgrades? See the top-rated heat pump installers, solar installers, home battery installers in Peterborough.

See every rebate in Peterborough

Compare top-rated local installers, ranked by Google reviews, and see the rebates you can stack. Free for homeowners.

See Peterborough rebates →
From Sam

Get the monthly rebate update

Once a month: new and changing rebate programs across every province and state we cover, plus what's new in heat pumps, solar and batteries. Short, sourced, no marketing.

No spam, ever. Unsubscribe anytime.

See your rebates and top installers