Why Are There Melted Spots On My Roof?

It sounds overly simplistic, but the way that snow melts on your roof is a sign of how your attic insulation is performing. Roof snow that melts and disappears quickly is a sure sign that the attic is poorly insulated. At the same time, roof snow that stays put is a sign that the attic is properly insulated. Either way, melted spots on the roof are a signal that attic insulation needs attention.

Roof snow melts because heat is escaping from inside the house. And since heat rises, it will eventually reach the uppermost part of the house, which is the attic. Heat loss could be a result of recessed lighting fixtures that aren’t sealed, gaps in poorly installed insulation, or simply an attic that isn’t adequately sealed. Whatever the case, it’s important to stop heat loss and energy waste.

In every home, heat loss (and air leakage) will affect the indoor temperature, the air quality, and seasonal comfort. Worst of all, energy efficiency is compromised, and in wintertime, indoor heat is escaping through the attic and roof. It means that the furnace has to work harder, and heating costs just grow and grow. Melted spots of snow on the roof are an indication that a fix is needed.

At Great Northern Insulation, resolving heat loss (and air leakage) is about choosing an insulation product and installation technique that will seal a space airtight. This is especially true in cavities like the attic and roof where proper sealing makes a big impact. In winter, heated indoor air will not escape, and in summer, warm outdoor air will not intrude. The result: energy efficiency.

For the professional team at Great Northern Insulation, air sealing the attic is best achieved with an application of Spray Polyurethane Foam. Expertly installed, SPF creates an effective airtight space, which blocks air leakage, and therefore prevents heat loss. SPF is a proven application that will also stop moisture from collecting, and will insulate with exceptional R-Value.

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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

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.

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

Do it right the first time
- with foam masters^TM

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.

Huntsman HEATLOK® SOYA HFO™

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.

3M^TM products.
Quality + Performance = Savings

3M^TM 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

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™.

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Climatizer

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.

Why Are There Melted Spots On My Roof?

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