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The Benefits of Ceiling Insulation

September 16, 2015

Experts in the industry agree that ceiling insulation is a cost-effective measure in ensuring energy efficiency. It will reduce heat loss in winter and heat gain in summer, and it will demonstrably improve indoor comfort, providing balanced temperatures throughout the house. Ceiling insulation, when properly chosen, and professionally installed, can provide annual cost savings on utilities that will make the project investment well worthwhile. Like any home improvement project, ceiling insulation requires proper management. And the priorities are straightforward: making sure that the space is fully sealed; choosing the right R-Value levels for the purpose; making certain that the insulation is expertly installed; ensuring that coverage is consistent and complete; and assuring appropriate ventilation. Clearly, ceiling insulation should be viewed as a system with various components. The attic floor covering a flat ceiling is one of the easiest parts of a building "envelope" to insulate. It's accessible, level and uniform. But ceiling insulation may also include cathedral ceilings, which will present some installation challenges. Either way, proper ventilation in the attic must be guaranteed so that air circulates and moisture is controlled. For ceiling insulation to perform at its maximum, ventilation needs to be part of the installation. Today, there are numerous products and installations used in ceiling insulation. Each has upsides and downsides, and each has a relative price tag. Somewhat conventionally, loose-fill insulation or fiberglass batts have been used in the attic. Here again, the basics of air leakage are common to all ceiling insulation efforts (especially for dropped ceilings). And the most important is to seal wiring, plumbing, light fixtures, and ventilating fans. The truth is, most insulation products do not stop airflow. This is particularly critical when it comes to ceiling insulation, because the attic is the worst place for air leakage. That's why many contractors are choosing to install polyurethane spray foam insulation. As ceiling insulation, it uniformly envelops the ceiling, roof and attic. It's the ultimate sealer, and will fully blanket crossbeams and roof joists; electrical and plumbing; and all of ductwork. For ceiling insulation projects, spray foam has proven to be a multi-purpose application. It creates an airtight space, it provides an effective vapor barrier, and it ensures the highest R-Value of any comparable insulation product. Spray foam insulation accommodates all of the concerns of ceiling insulation, and although the installation is somewhat more costly than other products, the long-term benefits, and the annual utility savings are well worthwhile. Contractors with extensive experience in ceiling insulation often offer a "hybrid" install for a more cost effective approach. The "hybrid" install combines spray foam insulation along with "blown-in" insulation. Both products work together and deliver excellent results. And beyond the cost effective approach, the main requisites of ceiling insulation are addressed: the space is airtight; moisture is controlled; and insulation potential is optimized. At the end of the day, a professional approach to ceiling insulation can guarantee home comfort, energy conservation, and lower utility bills throughout the year.

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935 Keyes Drive
Woodstock, Ontario
Canada N4V 1C3

Phone: 1-800-265-1914

Fax: (519) 539-7946
TOLL FREE: 1-800-265-1914

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7035 Industrial Drive
Comber, Ontario
Canada N0P 1J0

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Gravenhurst, Ontario
Canada P1P 1R1

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Barrie, Ontario
Canada L4N 9V5

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Port Perry, Ontario
Canada L9L 1B2

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GTA & South Central Ontario

450 Industrial Dr,
Toronto (Milton), Ontario
Canada L9T 5A6

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Nepean, ON
K2R 1H4

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Sarnia Ontario
Canada, N7T 2H3

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Niagara Region

6260 Don Murie St
Niagara Falls, ON
L2G 0B4

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Great Northern Insulation - Better Business Bureau Profile.


Best of 2017

From reputation to responsiveness, HomeStars consistently ranks Great Northern Insulation at better than 95% for customer satisfaction. Thanks to everyone for the great ratings! 

HomeStars 2018

Best of 2018

For the second year in a row, HomeStars consistently ranks Great Northern Insulation at better than 95% for customer satisfaction. Thank you again to everyone!

Homestars Best of 2019 Award

Best of 2019

For the third year in a row, HomeStars ranked Great Northern Insulation at better than 95% for customer satisfaction.

Homestars Best of 2020 Award

Best of 2020

For four years now, HomeStars has ranked Great Northern Insulation at better than 95% for customer satisfaction.


GNI is the Authorized & Trusted Insulation and Air Sealing Installer for Lowe’s

Enenrgy Savers

Energy Saving

Energy saving and energy efficiency is easier than one might think. Great Northern Insulation helps to identify performance issues, while taking advantage of improvement opportunities.

100% Canadian

100% Canadian

Great Northern Insulation is recognized as Canada's largest full-service insulation contractor. GNI is 100% Canadian owned, proudly serving Ontario customers since 1980.

Foam Masters

Do it right the first time
- with foam mastersTM

WALLTITE® ECO™ is a high-performance system, professionally installed by certified and approved specialists. Its C.C.M.C. approved (Canadian Construction Materials Centre) - with product quality guaranteed - and with installation by highly trained experts with the technical know-how to do the job right, the first time.


Gold Certification promise

GREENGUARD® Gold Certification ensures the strictest criteria for low-level chemical emissions. Certified products are safe for individuals with sensitivities (children/elderly) and safe for use in school environments and health-care facilities. The product certification is widely recognized by the LEED Rating System (Leadership in Energy/Environmental Design).

Insulthane Extreme

Insulthane® Extreme

For the ultimate in high performance spray foam insulation, Insulthane® Extreme is the professional choice for residential, commercial, and industrial application. With improved thermal performance over other products, Insulthane® Extreme has an exceptionally low Global Warming Potential (GWP). Considered environmentally friendly, this next generation spray foam insulation is non-ozone depleting, and exceeds specifications of other HFC product alternatives.


Multi-attribute product certification

ECOLOGOTM is an accredited sign of environmental performance – holistic – green – sustainable - and compliant with strict, third party standards. Life cycle criteria for product certification may include manufacturing and operations; health and environment; product materials and performance; and product innovation, development, and management.


3MTM products.
Quality + Performance = Savings

3MTM energy-saving products are designed to keep warm air in, and cold air out, while keeping energy bills down. Products optimize energy efficiency in buildings and homes; improve indoor environment for occupants; and effect the reduction of seasonal energy costs. 3M products are authorized for LEED credits (Leadership in Energy/Environmental Design).


Baeumler ApprovedTM
Professional, Certified and Insured

Baeumler ApprovedTM gives you peace of mind when connecting with contractors, trades and home service providers. All Baeumler Approved members have demonstrated high quality work for customers and other trade professionals. Members must also have Workers Compensation, liability insurance of at least $1,000,000 and prove professional certification.

Holmes and Holmes

Holmes and Holmes


Mike Holmes and his son Mike Jr. (MJ) convert MJ’s bachelor bungalow into a two-storey home for MJ and his girlfriend Lisa. Choosing the newest materials and build techniques, the father and son team follow Mike’s famous motto – “Make it right.” The show can be watched on HGTV and DIY Network.


Enbridge Incentives

The Energy Conservation Program provides incentives of up to $1,600 to customers who achieve energy efficiency and fuel savings – and Great Northern Insulation can pave the way.


Great Northern Insulation proudly abides by a renovation-specific Code of Conduct set by RenoMark™.


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