Debunking Attic Insulation Myths

Fibreglass attic insulation

Attic insulation is one of the most important home improvement projects you can make to improve energy efficiency and comfort. However, there are many myths and misconceptions about attic insulation that can lead homeowners astray. Let’s debunk some of the most common attic insulation myths and provide additional tips to help you make an informed decision about attic insulation in your home.

Myth #1: Attic insulation is only necessary in cold climates

This is one of the most persistent myths about attic insulation. In reality, attic insulation is crucial in all climates. It acts as a thermal barrier, regulating temperature year-round and reduces energy costs for both heating and cooling.

  • In the summer, insulation prevents the sun’s radiant heat from turning your attic into an oven, keeping your living spaces cooler.
  • In the winter, it stops warm air from escaping through the roof, helping your home retain heat and lowering your heating bills.

Myth #2: More insulation is always better

While it may seem intuitive that more insulation equals better protection, this isn’t always the case. In Winnipeg’s climate, over-insulating your attic can actually be counterproductive. Too much insulation can trap moisture, leading to issues like mold growth and wood rot, which can compromise the structural integrity of your home and pose health risks. The optimal amount of insulation, measured in R-value, depends on various factors including your home’s size, construction, and the specific climate conditions of Winnipeg.

Myth #3: Attic spray foam is harmful

This idea comes out because spray insulated walls contain a form of urea-forming deoxygen and are typically used in homes built before 1970. In fact the authorities did not know of the risks of sulphur ion which emits through offgassing into foam insulation. Fortunately today’s insulation has no health risks anymore and can be used safely in homes.

Myth #4: Attic insulation traps moisture, hot air and causes mold.

Properly installed insulation, combined with proper ventilation, actually helps prevent moisture problems. Insulation creates an air barrier that stops warm, moist air from entering the attic and condensing on cold surfaces. This prevents the buildup of moisture that can lead to mold growth and wood rot.

Myth #5: Attic insulation is expensive and not worth the investment.

While the upfront cost of attic insulation can be higher, it’s an investment that pays off in the long run. By significantly reducing your heating costs and cooling bills, attic insulation can often pay for itself within a few years. Additionally, many governments offer rebates and incentives for homeowners who upgrade their insulation.

Myth #6: Attic insulation is difficult to install.

Some types of insulation, like fibreglass insulation, can be relatively easy for DIYers to install. However, other types, like spray foam insulation, typically require professional installation. Don’t hesitate to seek help from our qualified insulation experts if you’re unsure about the installation process.

Myth 7: Attic Insulation Won’t Make Much Difference

Many homeowners underestimate the impact of proper attic insulation and a good roofing system, believing it’s a minor upgrade with minimal benefits. However, this couldn’t be further from the truth. In Winnipeg’s harsh climate, insufficient insulation can lead to a multitude of problems, from drafty rooms, heat leaks and cold spots to skyrocketing energy bills. Properly insulating your attic creates a thermal barrier that keeps warm air inside during the frigid winters and prevents heat gain in the sweltering summers. This means consistent, comfortable temperatures throughout your home, reduced energy consumption, and significant savings on your heating and cooling costs.

Choosing the Right Insulation

Several types of attic insulation materials are available, each with its own advantages and drawbacks:

  • Fibreglass: Offers good thermal performance and ease of installation, but requires careful handling due to its potential to irritate skin and lungs.
  • Cellulose: Made from recycled paper, it’s environmentally friendly and provides good thermal performance.
  • Spray Foam: Creates optimal airtight vapour barriers and offers high R-values, but is more expensive and requires professional installation.

The best type of insulation for your attic will depend on your budget current insulation amount, insulation quality and age, and the size of your home. Consult with our insulation experts to determine which insulation is the right choice for your home.

Don’t let these common myths about attic insulation deter you from making a valuable investment in your Winnipeg home. Whether you’re battling the bitter cold of winter or the sweltering heat of summer, proper attic insulation is a key component in creating a comfortable, energy-efficient living space. From reducing drafts and cold spots to preventing ice dams and lowering energy bills, the benefits of attic insulation are undeniable. Consult with our qualified team to determine the right type and amount of insulation for your home, and start enjoying the year-round comfort and savings that come with a properly insulated attic.

Contact us to get your free attic insulation quote before winter, and experience the benefits of energy-efficiency for your Winnipeg home!


Q: Is attic insulation really necessary in warm climates?

Answer: Yes, attic insulation is crucial even in warm climates. While it helps retain heat in the winter, it also plays a vital role in the summer by preventing the sun’s radiant heat from entering your home. This reduces the workload on your air conditioning system, keeping your home cooler and saving you money on energy bills.

Q: How do I know if my attic has enough insulation?

Answer: The recommended amount of insulation (R-value) varies depending on your climate, home size, and type of insulation. A good rule of thumb is to check if your insulation is level with or slightly above the attic floor joists. However, the best way to determine if you need more insulation is to have a professional energy audit conducted.

Q: Are there any government incentives or rebates available for attic insulation?

Answer: Yes, many governments offer rebates, tax credits and incentives for homeowners who upgrade their attic insulation. These programs vary by region, so be sure to check with your local utility provider or energy agency for available options.