Winters in Montreal typically bring frigid temperatures, cold winds, and heavy snow to people across the region. During this time, homeowners tend to turn up the heat to ensure that they stay comfortable and warm at home. Unfortunately, this can lead to increased costs, especially when the house lacks high-quality insulation or if the efficacy of the insulation has deteriorated over time. To preserve your warmth and minimize excessive heating costs in winter, blown-in cellulose insulation in Montreal is an effective option. Investing in cellulose crawl space, ceiling, wall, and attic insulation in Montreal can help you take the strain off your furnace and bring down the cost of monthly heating expenses. As a local insulation company since the 1990s, the Isolation Majeau et frères team understands how to optimize insulation for the local climate. Our experts can provide you with guidance and smart solutions that make a difference.
Here are three common ways blown-in cellulose insulation can reduce your heating costs this winter.
Top-Up Old Insulation
Over time, insulation materials can settle, become compressed, or break down due to moisture, pests, or general aging. In many homes across the Montreal area, insulation originally installed decades ago is no longer providing the same protection it once did. Topping up old, uncompromised insulation with blown-in attic insulation in Montreal is a cost-effective way to improve your home’s thermal energy efficiency without starting from scratch.

Blown-in cellulose is ideal for topping up existing insulation because it fills gaps with ease. It can be applied over fibreglass or existing cellulose to boost your R-value and reduce the amount of heat that escapes through your attic. This upgrade reduces heat loss and leads to lower heating bills month after month, as it reduces your dependency on the furnace to continually warm your home during the colder months.
Insulate Hard-to-Reach Areas
Drafty corners, crawl spaces, and wall cavities can be overlooked during insulation upgrades or left without sufficient insulation because they can be difficult to access, yet these spaces can be a significant source of heat loss. Because blown-in cellulose insulation is lightweight and highly malleable, expert insulation installers like the Isolation Majeau team can seamlessly blow cellulose insulation into these tight spaces where batts or more rigid foam won’t fit properly.
By ensuring even and complete coverage in hard-to-reach areas, you’re effectively sealing off hidden air leaks and improving the overall energy efficiency of your home.
Control R-Value
Every home has different insulation needs depending on its age, construction, and size. One of the advantages of cellulose insulation is that it allows for greater control over how much is installed. Whether you’re trying to meet Quebec building code standards or exceed them for added energy savings, blown-in cellulose can be applied to meet specific R-value targets.
When your insulation meets the right R-value, it slows down heat transfer effectively, keeping warmth inside longer and helping your furnace work more efficiently. This leads to lower utility bills and more consistent indoor temperatures, even on the coldest winter days.
Improve Your Insulation and Reduce Heating Costs with Isolation Majeau et frères.
Your home can be an escape during the frigid winter months in Montreal without costing you too much. At Isolation Majeau, we provide a number of insulation options and provide expert guidance so you can find the perfect choice for your property. To learn more about the status of your insulation and to reduce your heating bills this winter, book a consultation with Isolation Majeau.
Contact Us Today.
This article was originally published on July 15, 2025 by Jocelyn St-Pierre