Professional Spray Foam Insulation
At South Forty Spray Foam, we deliver high-quality spray foam insulation designed to outperform traditional batts.
Our insulation creates an air-tight seal that reduces heat loss, improves energy efficiency and adds structural strength to your building. It's moisture and mould resistant, making it a smart choice for long-term durability and indoor air quality. Ideal for rim joists, basements, shops, crawlspaces and new construction, our spray foam solutions are perfect for residential, commercial and agricultural applications.
Trust South Forty Spray Foam for quality insulation done right.
Spray Foam Insulation Options
Making the Right Choice in Insulation Starts with Understanding Your Options
When it comes to choosing insulation, the options can seem overwhelming. Even within spray foam insulation, there are two main types to consider: open-cell and closed-cell. Each performs differently and is best suited to specific applications, so understanding the benefits of both is key to making the right decision for your space.
Closed-cell spray foam is a dense, rigid insulation with tightly packed cells that block both air and moisture. It offers high thermal performance and adds structural strength to the building envelope.
Benefits:
• High R-value – Delivers strong insulation performance in less space
• Moisture resistant – Acts as a vapour barrier, helping to prevent mould
• Adds strength – Increases structural integrity where applied
Considerations:
• Higher cost – More expensive than open-cell foam due to material density
• Less sound absorption – Not as effective for indoor soundproofing
Closed-cell foam is ideal for basements, crawl spaces, exterior walls and any area where moisture protection and insulation efficiency are key.
Closed-Cell Spray Foam
Open-cell spray foam is a soft, flexible insulation that expands to fill gaps and create an airtight seal. It’s lower in density and more affordable than closed-cell foam, making it a cost-effective option for many indoor applications.
Benefits:
• Cost-effective – Uses fewer materials, making it more budget-friendly
• Excellent for soundproofing – Ideal for interior walls and ceilings
• Great air sealing – Expands to block drafts and improve energy efficiency
Considerations:
• Lower R-value – Not as insulating as closed-cell foam in extreme conditions
• Best for indoor use – Not typically used where moisture resistance is needed
Open-cell spray foam is perfect for homeowners looking to reduce noise and improve comfort inside their home.
Open-Cell Spray Foam
Spray Foam vs Fiberglass
Why Spray Foam Insulation installed by a trained professional, is the go-to choice
SPF does not deteriorate over time
Water can permanently damage fiberglass
SPF offers a tight barrier against exterior elements
Deterioration of fiberglass allows mould growth & vermin infestation
SPF fills every gap & adheres tenaciously to the studs
Air can more easily leak with fiberglass causing drafts & uneven temperatures
Moisture Management
The impact of humidity and moisture movement.
How does moisture travel?
Vapour Diffusion
Water vapor moves through porous materials due to pressure differences from high to low temperatures.
Air Transport
Movement of moisture in the air when warm, moist air touches a cold surface, causing condensation.
All-In-One Insulation
Closed-cell spray foam acts as vapour and air barrier.