Professional Attic Insulation Services in the GTA

Upgrade your home’s energy efficiency and comfort. As Toronto's trusted exterior experts for over 40 years, we install premium Climatizer blown-in cellulose insulation to keep your home warm in the winter, cool in the summer, and your energy bills low.

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Homestar's 2023 'Best of Award' Champions

Peter & Greg Walker Contracting Inc.

Protecting Your Home from the Top Down

For over four decades, Peter & Greg Walker Contracting has been the Greater Toronto Area's premier choice for roofing and exterior remodeling. We know that a truly secure, comfortable home requires more than just a great roof; it requires a properly insulated attic. By adding premium blown-in cellulose insulation to our trusted lineup of services, we are extending our commitment to protecting your home. Our expert team ensures your thermal envelope is sealed, helping you lower your utility bills and keep your family comfortable year-round.

Why Choose Blown-In Cellulose Insulation?

At Peter & Greg Walker, we prioritize the safety and satisfaction of our clients. With our comprehensive chimney services, we aim to provide you with a reliable, efficient, and long-lasting chimney system that enhances the comfort and value of your home.

Superior Energy Efficiency

Are you aware of the risks associated with a neglected chimney? Prevent costly damages and guarantee a worry-free winter season!

Blown-in cellulose densely fills every gap, crack, and crevice in your attic. This provides exceptional heat retention during freezing Toronto winters and keeps your home pleasantly cool at the height of summer.

100% Eco-Friendly

Worried about inefficient heating and high energy bills? Discover the latest chimney technologies to elevate your home's heating.

Made from 85% locally sourced, post-consumer recycled paper, our cellulose insulation is an environmentally sustainable choice with a remarkably low carbon footprint.


Fire & Pest Resistant

Treated with safe, non-toxic additives, our insulation acts as a powerful deterrent against mold, mildew, rodents, and pests, while also boasting a Class-1 fire resistance rating for your peace of mind.

A Homeowner's Guide to Understanding Attic Insulation

Maintaining Your Home's Thermal Envelope

Once your new cellulose insulation is installed, it requires virtually zero maintenance! However, to ensure your attic system functions perfectly for decades, keep these three tips in mind:

Ensure Proper Ventilation

Insulation works hand-in-hand with your roof vents (soffits and ridge vents). Never block these vents, as airflow is critical to preventing moisture buildup.

Check for Roof Leaks

A healthy roof protects your insulation. If you notice missing shingles or ceiling stains, call us for a quick roof repair before water can saturate and compress your attic insulation.

Watch for Pests

While our cellulose is treated to resist rodents, always make sure your exterior roofline and eaves are sealed tight against wildlife entry.

Mind Your Storage Space

Blown-in cellulose works by trapping tiny pockets of air. If you use your attic for storage, avoid placing heavy boxes or boards directly on top of the insulation.

The ROI of Attic Insulation

Did You Know?

Upgrading your attic insulation is one of the smartest, most cost-effective home improvements you can make.


  • Slash Your Energy Bills: Homeowners can save anywhere from 20% to 50% on their heating and cooling costs simply by bringing their attic insulation up to modern R-value standards.
  • Fast Return on Investment: Because it drastically lowers your monthly utility bills, upgrading your attic insulation often pays for itself within just a few years.
  • Extend Your Roof's Lifespan: Proper insulation prevents "ice damming" in the winter by keeping your roof deck at an even, cold temperature, saving you from costly roof leaks and shingle damage.

Get 15% Off Your Attic Insulation Today

Financing is available, contact us for more!

For a limited time, Peter & Greg Walker Contracting is offering a 15% Discount on all new attic insulation installations. Don't let your hard-earned money escape through your roof!

What Our Happy Customers Are Saying:

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"We got 3 quotes, with Walkers being the last. The salesman Brian took photos of our roof and attic then went through great detail educating us on the current condition of our roof from the inside out. Although it had been replaced about 20 years ago, given our 100 year old home, the venting, baffling and insulation were never done properly, thus we had great moisture problems in our home. Brian went on to explain exactly what was going to be done, the benefit of each step, and we got what we paid for. We were also given more photos of the attic and roof after job completion. From execution of steps to the cleanliness of the site during and after each day of work was well worth the price. Not only that, but Blerta the office and customer care manager is an exceptional communicator who kept us updated on project details. We're very happy with the process and final product."

- Katarina S.

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Our 5-Step Approach to Insulation Excellence

Preparation

Before starting the insulation process, our experts conduct a thorough assessment of the attic's condition to identify any existing issues. This includes checking for signs of moisture, drafts, or structural concerns that might affect the installation. We then also ensure that the attic space is meticulously cleaned and free from any debris or contaminants that could compromise the effectiveness of the insulation materials.


Additionally, our team will gather all the necessary blowing equipment, hoses, and safety gear required for the installation process to guarantee a smooth and efficient workflow.

Application of Winter Guard Ice and Water Shield

To safeguard against water infiltration, our expert roofers first identify vulnerable areas like eaves, valleys, and roof penetrations. They then skillfully cut the Winter Guard Ice and Water Shield to the necessary dimensions and apply it directly to these areas, ensuring complete coverage and a secure seal to prevent water penetration underneath the roofing materials. 


Furthermore, they seamlessly integrate the Winter Guard Ice and Water Shield with the RoofRunner AIR Advantage, forming a comprehensive and watertight barrier to effectively protect against potential water damage.

Installation of DiamondDeck Synthetic Underlayment or RoofRunner AIR Advantage

In this installation phase of our process, we present two crucial preparatory steps:


  1. Installation of Attic Depth Rulers
  2. Installation of Hatch and Light Fixture Barriers

In both of these roofing underlayment processes, whether it's DiamondDeck Synthetic Underlayment or RoofRunner AIR Advantage, we employ a meticulous approach. Rolling out the chosen underlayment across the entire roof surface, we ensure precise alignment and secure fastening to the roof deck. For DiamondDeck, we adhere to recommended overlap, securing it tightly to prevent wrinkles or gaps that could compromise its effectiveness. A thorough inspection follows for both options, allowing us to make necessary adjustments or repairs and guarantee a reliable foundation for the final roofing materials. Our commitment to precision ensures the optimal performance of either DiamondDeck or RoofRunner AIR Advantage in terms of breathability and resistance to moisture.

Final Insulation Application

During the roofing process, our team of professionals proceed with the meticulous installation of your selected roofing materials and system, following the specific guidelines and recommendations provided by the manufacturer. 


We ensure that the final roofing application is executed meticulously, with careful attention to precise alignment, secure fastening, and thorough sealing of the roofing materials to establish a robust and weather-resistant roof system.

Post-Installation Inspection and Maintenance

Upon completion of the insulation process, We conduct yet another thorough inspection of the entire attic system, ensuring proper installation and integration of all components while checking for any signs of uneven settling or potential weaknesses.


Then our team will provide you with detailed information on how to maintain the attic, recommending regular roof inspections to promptly identify any leaks or ventilation issues that may arise over time.


Additionally, we offer guidance on the necessary steps to take in the event of home renovations or pest activity, aiming to preserve the longevity and integrity of your insulation system.

Premium Quality Backed by Iron-Clad Warranties

We believe in using the best materials on the market, which is why we proudly install Climatizer Plus™ Cellulose Insulation. Manufactured right here in Ontario, Climatizer has over 50 years of experience producing high-performance, eco-friendly loose-fill insulation. Certified by the UL ECOLOGO™ program and rigorously tested by the National Research Council of Canada, Climatizer Plus guarantees maximum thermal comfort and safety.

Climatizer

Lifetime Material Warranty

Your Climatizer insulation is guaranteed to perform for the lifetime of your home.

Peter & Greg Walker Workmanship

5-Year Workmanship Guarantee

Installed by our manufacturer-trained experts, we guarantee a flawless application.

Frequently Asked Questions

  • How much money can I save by insulating my attic in Toronto?

    Depending on the age of your home and your current insulation levels, upgrading to optimal R-values with blown-in cellulose can reduce your heating and cooling costs by up to 20% to 50% annually.

  • Is blown-in cellulose better than fiberglass insulation?

    Yes! Cellulose is much denser than traditional fiberglass batts, giving it a higher R-value per inch. It is exceptional at filling oddly shaped cavities, offers superior soundproofing, and is made from eco-friendly recycled materials.

  • Do you have to remove old insulation before blowing in the new cellulose?

    In most cases, no. New blown-in cellulose can usually be safely applied directly over your existing insulation to boost the overall R-value of your home. During our assessment, we will determine if your old insulation is damp, moldy, or heavily compressed and advise if removal is necessary.