How Does Insulation Work in Your Building?
Insulation—whether installed on the interior or exterior of your building envelope—works by resisting the flow of heat. By slowing heat transfer, insulation reduces the workload on heating and cooling systems, helping buildings maintain consistent temperatures with less energy use.
A strong, well-designed building envelope supported by the right insulation strategy is one of the most cost-effective ways to improve energy efficiency, increase occupant comfort, and lower long-term operating costs—especially in Canada’s demanding climate.
Insulation Solutions for Every Application
While many people know Hewson Brothers for drywall and ceiling systems, we also distribute a full range of insulation products designed to support residential, commercial, and multi-residential construction across Ontario.
We carry trusted solutions from industry-leading manufacturers including Owens Corning, Johns Manville, Rockwool, and CertainTeed—ensuring performance, code compliance, and long-term reliability.
Interior Wall & Ceiling Insulation Options
We stock a wide variety of interior insulation products, making it easy to match the right solution to the jobsite conditions:
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Fiberglass Batts & Blankets
A cost-effective, easy-to-install option commonly used in walls, floors, and ceilings. Ideal for residential and light commercial applications where thermal performance and speed of installation matter. -
Mineral Wool Insulation
Known for superior fire resistance, sound attenuation, and moisture resistance, mineral wool is a go-to choice for multi-residential, commercial, and acoustic-sensitive spaces. -
Blown-In / Loose-Fill Insulation
Ideal for attics and retrofit projects where full cavity coverage is critical. Helps reduce air gaps and improve overall thermal performance. -
Thermal & Acoustic Insulation Blankets
Frequently used in commercial applications where both temperature control and sound management are required.
We’re Your Insulation Specialists…
Everything you need, delivered to your jobsite.
Spray Foam & Air Sealing Solutions
Thermal performance isn’t just about insulation—it’s also about air sealing.
Professional-grade spray foam and foam sealant kits.
- Ideal for rim joists, service penetrations, and detailing work
- Helps improve overall envelope performance and reduce drafts
- Complements batt and board insulation systems
Exterior & Specialty Insulation Products
Modern construction increasingly relies on exterior insulation and specialty systems to improve whole-building performance.
- EPS & Rigid Foam Insulation
We carry expanded polystyrene (EPS) and rigid foam insulation options designed for use in wall assemblies, foundations, and under-slab applications. These products provide consistent R-value, moisture resistance, and long-term durability.
Understanding R-Value & Performance
Choosing the right insulation isn’t just about thickness—it’s about R-value, assembly design, and how materials work together.
Different insulation products perform differently depending on where and how they’re installed. Our team helps contractors understand how insulation choices impact energy performance, comfort, and compliance with Canadian building codes.
Accessories That Finish the System
To ensure your insulation performs as intended, we also stock all the supporting materials required to complete the installation properly, including:
- Acoustical sealants and caulking
- Vapour barrier poly
- Tape and detailing accessories
By supplying both the insulation and the accessories, we help eliminate gaps in scope, reduce delays, and simplify ordering.
A True One-Stop Shop for Interior Systems
Our goal at Hewson Brothers Building Supply is simple:
to provide a complete interior system solution—from framing and insulation through drywall and finishing materials.
With knowledgeable staff, trusted manufacturer partnerships, and product availability tailored to Canadian construction, we help builders, contractors, and developers keep projects moving efficiently and confidently.
Project-specific insulation recommendations
