Call Today 1-800-265-1914
Ontario's Insulation Leader Since 1980
Seasons Change,
Home Comfort Shouldn't.
Insulation Ontario
How to Save Money on your Home Energy Bills

Great Northern’s trained technicians are some of the most thorough and experienced professionals in the marketplace.

Case Study

How much can homeowners expect to save in terms of annual energy use and greenhouse gas emissions?

Condominium Weatherization

Weatherize your condominium to improve occupant comfort, health and safety, as well as building durability and energy efficiency.

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Site Map

Service Area Office Branches:

(Head Office)

Woodstock, Ontario Insulation Services:
935 Keyes Drive
Woodstock, Ontario
Canada N4V 1C3
Tel: (519) 537-5873
Fax: (519) 539-7946
TOLL FREE: 1-800-265-1914

Barrie, Ontario Insulation Services:
29 Ferndale Industrial Drive
Barrie, Ontario
Canada L4N 9V5
TOLL FREE: 1-800-265-1914

Essex, Ontario Insulation Services:
7035 Industrial Road
Comber, Ontario
Canada N0P 1J0
TOLL FREE: 1-800-265-1914

Durham Region Ontario Insulation Services:
2-182 North Port Road
Port Perry, Ontario
Canada L9L 1B2
TOLL FREE: 1-800-265-1914

Gravenhurst (Muskoka), Ontario Insulation Services:
1027 Jones Road
Gravenhurst, Ontario
Canada P1P 1R1
TOLL FREE: 1-800-265-1914

Milton (Toronto), Ontario Insulation Services:
450 Industrial Dr.
Milton, Ontario
Canada L9T 5A6
TOLL FREE: 1-800-265-1914

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