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Spring Showers Ahead, it's a Good Time to Fix a Leaking Attic

April 25, 2018

Whether you’ve got an emergency attic leak, or just a nagging water leak in the roof area, spring is the ideal time to fix a leaking attic. Over time, attics can suffer from water leaks for a number of reasons - all of them resolvable. The key is to do it right the first time, ensuring long-term results.

Finding the source and scope of an attic leak

In order to properly fix a leaking attic, it’s important to source the cause of the leak, and identify the inherent problem. This can sometimes be difficult, especially if there is insulation obscuring the source of the leak. In many homes, it’s quite common for attic leaking to occur around the chimney, attic vents, plumbing vents, and HVAC ducting. This is because of wear and tear, but can also be a result of poor workmanship during installation. For professionals, finding the source of an attic leak is fundamental to fixing the inherent problem. A professional knows where to look and how to spot the telltale signs. Professionals also know the best approach to fix a leaking attic.

Different reasons for leaks and wet attic cavities

Wet attic cavities or persistent water leaks could be a result of many things:  a roofing failure; ice damming; even condensation build-up inside the attic. Needless to say, rainy spring weather will simply exacerbate the leaking and potentially cause damages. When you have a professional on hand to fix a leaking attic, there are definite advantages. It means that every possible attic issue is addressed – from roofing elements, to vapour barriers, to air barriers, to thermal insulation, to ventilation. And it means that the right type of work is done to ensure the best long-term results.

Finding a reliable contractor to fix a leaking attic

Regardless of the leakage issue, attic and roofing repairs should be done right the first time. This is not a time for patchwork or quick fixes – these types of approaches only serve as a “band aid” solution with short-term outcomes. For the attic professionals at Great Northern Insulation, only a comprehensive approach will do - from thorough inspection, to practical recommendations, to quality installations. The team at GNI specializes in preventing water leakage issues, air leakage issues, and attic insulation. They will also address such problems as ice damming and attic condensation. Combining GNI’s specialties with the consultation of a roof inspector goes a long way in ensuring your attic’s structure stays strong and sturdy.

GNI also offers insulation removal/replacement

In any home, the attic requires proper sealing and quality insulation. This will ensure a dry space from season to season, with no potential for moisture collection or water leakage. Great Northern Insulation specializes in spray foam applications – both for air/vapour sealing as well as thermal insulation. Often combined with blown insulation in the attic, the spray foam provides an effective air barrier, vapour barrier, and insulative barrier all in one application. Best of all, Great Northern Insulation will provide you with a reputable product warranty and an installation guarantee.

GreenON Rebate Program offers rebates for installed attic insulation

The GreenON Rebate Program is now available to homeowners who are intending to make upgrades to attic insulation (as well as other energy efficiency improvements). The rebate is designed to help homeowners decrease the carbon footprint of their homes. This is done by offsetting the upfront cost of upgrades, particularly the purchase and installation of newly installed insulation. If you’re ready to upgrade your attic insulation, this is an ideal opportunity to enjoy big savings. By taking full advantage, you could qualify for up to $1,500 for upgrading or retrofitting your attic insulation. Great Northern Insulation can help you with the entire process from start to finish.

When you’re ready to fix your leaking attic, contact the professionals at a GNI for a free assessment. Call 1.888.778.9591 or visit the company website at https://www.gni.ca .

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

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

Greater Toronto Area

2 Guided Court
Etobicoke, ON
M9V 4K6

TOLL FREE: 1-800-265-1914

GTA East

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

TOLL FREE: 1-800-265-1914

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

Niagara Region

25 Lincoln Ave
St. Catharines, ON
L2P 2C7

TOLL FREE: 1-800-265-1914


Great Northern Insulation - Better Business Bureau Profile.

Homestars Best of 2021 Award

Best of 2021

HomeStars has ranked Great Northern Insulation as a company that goes above and beyond in every aspect of business for the year of 2021.

Homestars Best of 2022 Award

Best of 2022

HomeStars has ranked Great Northern Insulation as a company that goes above and beyond in every aspect of business for the year of 2022.


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

Trusted for Over 40 Years

Over 40 Years in Business

At GNI, we service your project with the most experienced staff in the industry. Ongoing professional development is an obsession at GNI and we will not compromise at any level to bring to our customers the very best Installers, Sales Representatives, Customer Care Personnel, Field Superintendents, Estimating and Technical Support to your project.

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

January, 2021 regulatory phaseout of hydrofluorocarbons (HFCs) with the introduction of WALLTITE CM01. Using hydrofluorolefins (HFOs) with lower global warming potential (GWP) compared to HFCs, WALLTITE CM01 is the next generation of spray foam insulation.



Heatlok® Soya HFOTM leverages Honeywell’s latest Solstice® Liquid Blowing Agent technology. This new hydrofluoroolefin (HFO) blowing agent is the most environmentally conscious blowing agent produced to date, with a zero ozone depletion potential (ODP) and a global warming potential (GWP) of 1, which is more than two orders of magnitude (99.9%) lower than HFCs used in this industry.


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).

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 Home Efficiency Rebate Plus program offers up to $10,000 in home reno rebates – 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.

As Seen on Love It or List It

The GNI crew have been featured installing insulation on Love It or List It - have you seen our logo in an episode?

Climatizer Cellulose


CLIMATIZER PLUS cellulose insulation is manufactured from a minimum of 85% locally-sourced post-consumer recycled newsprint. Non-toxic additives are applied to the uniquely fiberized paper generating a building material with superior thermal and acoustic properties, as well as exceptional resistance to fire, moisture, mould and pests.

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