Call Now1.800.265.1914

Is Your Attic Insulation Working Properly?

December 05, 2017

In determining if your attic is effectively insulated, professionals point out some common problem areas. Any of them will signal a need for action. But to know for certain if your attic is insulated properly, having a professional assessment is an excellent first step.

When the attic is not properly insulated, the symptoms are usually noticeable and homeowners begin to wonder. Room temperatures fluctuate; some rooms feel drafty; energy bills are on the high side; and ice damming may develop when temperatures plunge.

Icicles and Ice Damming

Something is wrong if winter icicles are overgrowing. Those icicles point to a bigger issue - ice damming. When your roof is covered with snow and the heat from inside the attic melts the snow, this can lead to ice damming. The melting water flows down the roof slowly and actually refreezes. The result of this melting and refreezing process is a substantial buildup of ice that runs along the edge of the roof.

When left untouched, ice damming can cause damage – the ice can rip off shingles, crunch up the gutters, and even damage the roof structure. The solution is to prevent heat transfer inside the home. This is done in two ways:  enhancing inadequate attic insulation, and sealing air leakage pathways in the attic floor. In short, these “fixes” will prevent the attic from warming.

Fluctuating Temperatures

When a room has fluctuating temperatures (particularly in the winter months), it’s likely that insulation is underperforming somewhere in the house. Fluctuating temperatures are obvious to homeowners, as are colder-than-usual exterior walls, and ceilings that are cold. When your attic is properly insulated, these types of things will not generally happen.

In any home, new or old, there is quantifiable heat loss through exterior walls, upstairs ceilings, and poorly sealed windows. In fact, studies show that most winter heating and summer cooling is lost through the roof and attic. It’s simply due to air leakage and underperforming insulation. But   when the attic is properly insulated, the space is well sealed and thermally protected.

Inconsistent Energy Bills

Higher-than-usual energy bills (heating and cooling) are easy to notice, and signal an insulation problem. When the attic is properly insulated, energy bills are far more consistent.

If your HVAC system is overworking there’s a good chance that you have a higher than usual energy bill- mainly due to energy loss. Air leakage and poorly performing insulation are usually the main cause of energy loss.

For improving home energy efficiency, insulation professionals believe that the best return-on-investment is a combination of air sealing and insulation. Online technology like MyEnergyXpert can assist homeowners in making repairs and retrofits that will boost energy performance and energy efficiency. The annual energy savings on heating and cooling will be dramatic.

Energy Efficiency = Savings

Improving attic insulation makes a home more energy efficient, while enhancing indoor comfort during winter and summer. And with air leakage minimized, associated problems are mitigated, while energy costs are held in check. More important, the cost of sealing and insulation is quickly offset by the measurable savings year after year.

Western Ontario

935 Keyes Drive
Woodstock, Ontario
Canada N4V 1C3

Phone: 1-800-265-1914

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

Southwestern Ontario

7035 Industrial Drive
Comber, Ontario
Canada N0P 1J0

TOLL FREE: 1-800-265-1914

Muskoka, Haliburton, Northern Ontario

1027 Elwell Park Road
Gravenhurst, Ontario
Canada P1P 1R1

TOLL FREE: 1-800-265-1914

Central Ontario

29 Ferndale Industrial Drive
Barrie, Ontario
Canada L4N 9V5

TOLL FREE: 1-800-265-1914

GTA East

103 North Port Road
Port Perry, Ontario
Canada L9L 1B2

TOLL FREE: 1-800-265-1914

GTA & South Central Ontario

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

TOLL FREE: 1-800-265-1914

Eastern Ontario

1035 Moodie Dr #1,
Nepean, ON
K2R 1H4

TOLL FREE: 1-800-265-1914


259 Campbell Street
Sarnia Ontario
Canada, N7T 2H3

TOLL FREE: 1-800-265-1914

Niagara Region

6260 Don Murie St
Niagara Falls, ON
L2G 0B4

TOLL FREE: 1-800-265-1914


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™.


We are Verified & Bonded by eRenovate. When you choose to proceed with our services through their platform, you receive the gaurantees set forth through their program.

Please, enter a valid value

Incorrect values!