Top-Rated Insulation Installers in Nanaimo, BC
3 local companies ranked by 262 Google reviews. Free to compare, no sign-up.
Short answer: The top-rated insulation installers in Nanaimo are Top Trade Insulation and Attic (4.9★, 209 reviews), Harbourside Spray Foam (4.9★, 30 reviews), Nick's Insulation (4.8★, 23 reviews).
Rebates need a registered contractor. Better Homes BC lists 26 program-registered insulation contractors that serve Nanaimo. 3 on this ranking are marked ✓, and 23 more are listed below the ranking.
Insulation installers in Nanaimo, ranked
- 4.9 (209 Google reviews)2520 Bowen Rd #205, Nanaimo, BC V9T 3L3
- Harbourside Spray Foam✓ Registered contractor (ESP and HRR)4.9 (30 Google reviews)207 Milton St, Nanaimo, BC V9R 2K5
- Nick's Insulation✓ Registered contractor (ESP and HRR)4.8 (23 Google reviews)6094 Cedar Grove Dr, Nanaimo, BC V9T 6G1
✓ = on the official contractor list for Better Homes BC program registered contractor (ESP and HRR) (checked October 22, 2026, source). Most rebates require a registered contractor; confirm before you sign.
Other registered insulation contractors that serve Nanaimo
Better Homes BC lists 26 program-registered insulation contractors that serve Nanaimo. 3 of them are on our ranking above. The rest are listed below from the official list, which is what the BC Hydro and CleanBC rebates require. They are not ranked, because we have no Google review data for them here. A company below can also appear in the ranking above if we could not confidently match its name to the official list. Check reviews yourself before you hire.
7 with a head office in Nanaimo (alphabetical, not a ranking)
- DAM Good Drywall Ltd., head office Nanaimo. Registered for HRR.
- Lanson's Drywall Systems Ltd., head office Nanaimo. Registered for ESP and HRR.
- Phoenix Siding Inc., head office Nanaimo. Registered for ESP and HRR.
- Rafter B Insulation Ltd, head office Nanaimo. Registered for ESP and HRR.
- Ravenwood Exteriors Ltd., head office Nanaimo. Registered for HRR.
- Shoreline Building Performance, head office Nanaimo. Registered for ESP and HRR.
- Unlearn Industries Ltd., head office Nanaimo. Registered for ESP and HRR.
Source: Better Homes BC registered contractor list, checked October 22, 2026. Use its service-region filter for the full list.
Together these 3 companies average 4.9★ across 262 reviews. Top Trade Insulation and Attic has the most reviews (209).
Ranked by Google rating weighted by review count, collected September 2026. Rankings are not paid for. How we rank and how we make money.
Listed here? Get your top-rated badge for your website or print the Nanaimo rebate sheet for your customers.
What a insulation costs in Nanaimo
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.
That could cut your cost by up to $5,500 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.
Talk to a registered energy advisor first. Some rebates need an evaluation or heat load calculation before any work starts. See the top-rated registered energy advisors in Nanaimo. Read when to call an energy advisor.
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Why insulation matters in Nanaimo
In Nanaimo, the average January low is 2°C, colder than 20% of the 123 cities we track. Winters here are mild, so comfort and summer heat matter as much as heating bills. Air sealing and attic insulation still help most, and they also keep upstairs rooms cooler in summer.
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 an insulation installer
- Ask whether they will air-seal before insulating, and what they will seal (attic hatch, pot lights, pipes, top plates).
- Ask for the R-value before and after for each area, and the material and depth they will install.
- Ask whether your rebate needs an energy assessment before and after the work, and who books it.
- Ask how they handle ventilation and any old insulation that could contain vermiculite (asbestos risk).
Questions about insulation installers in Nanaimo
Who is the best insulation installer in Nanaimo?
Based on Google reviews, the top-rated insulation installers in Nanaimo are Top Trade Insulation and Attic (4.9★, 209 reviews), Harbourside Spray Foam (4.9★, 30 reviews), Nick's Insulation (4.8★, 23 reviews). We rank by a review-weighted score, so companies with many strong reviews rank above those with only a few.
How are the insulation installers in Nanaimo ranked?
We list 3 insulation companies in Nanaimo, ranked by Google rating weighted by review count. Together they have 262 Google reviews and average 4.9 stars, collected September 2026. Top Trade Insulation and Attic has the most reviews (209). No company pays to be listed or ranked.
How much does insulation cost in Nanaimo?
Insulation prices depend 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.
Are there rebates for insulation in Nanaimo?
Yes. Our verified program data shows insulation rebates up to $5,500 open in Nanaimo. Most rebates have rules, such as income, your current heating, a registered contractor, or approval before work starts, so check the rebate page before you sign.
Do I need a registered contractor to get the insulation rebate?
Most rebate programs require one. 3 of the 3 insulation companies listed here appear on the official contractor list for Better Homes BC program registered contractor (ESP and HRR). Confirm that your installer is registered before you sign.
Is insulation worth it in Nanaimo?
In Nanaimo, the average January low is 2°C, colder than 20% of the 123 cities we track. Winters here are mild, so comfort and summer heat matter as much as heating bills. Air sealing and attic insulation still help most, and they also keep upstairs rooms cooler in summer. Most rebate programs pay only after an energy assessment, and some need one before the work too. Book it first.
What should I ask an insulation installer before I hire?
Ask whether they will air-seal before insulating, and what they will seal (attic hatch, pot lights, pipes, top plates). Ask for the R-value before and after for each area, and the material and depth they will install. Ask whether your rebate needs an energy assessment before and after the work, and who books it.
Before you call anyone, check what insulation rebates you can get in Nanaimo. 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, energy advisors in Nanaimo.
How to read these results
- Open the profile.How a installer describes its own work tells you a lot. Look for jobs like yours.
- Read the Google reviews.Stars and counts come from Google Maps. Click through and read what past customers wrote, good and bad.
- Check for program badges.A green registered-contractor badge means the company is on the program's own list, which some rebates require.
- Compare three.Do not stop at the first good installer. Three quotes show you the real range in price, equipment and plan.
Not ready to talk to a contractor yet?
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