Basement Insulation in Vaughan
Stop Cold Walls, Moisture & Wasted Energy
Cold basement walls pull heat from your home and create condensation that leads to mold and musty odours. Closed-cell spray foam creates a thermal break and vapour barrier in one application—warming your foundation walls and eliminating moisture problems. Ontario Building Code compliant installations throughout Vaughan.
Get a Free Basement QuoteWhy Vaughan Basements Need Spray Foam
Vaughan homes—especially those built in Woodbridge, Maple, and Kleinburg between the 1970s and 2000s—often have uninsulated or poorly insulated foundation walls. The result: cold floors above, condensation on walls, and 20-30% of your heating bill escaping through the foundation.
Traditional fibreglass batts don't work in basements. They trap moisture against concrete, promoting mold growth and losing R-value when damp. Closed-cell spray foam solves both problems: it insulates AND controls moisture in one seamless application.
Benefits of Basement Spray Foam Insulation
🌡️ Thermal Break
Stops cold-bridging through concrete walls. Warmer basement = warmer floors above.
💧 Moisture Control
Closed-cell foam at 2"+ acts as a vapour barrier, preventing condensation and mold.
⚡ Energy Savings
Reduce foundation heat loss by up to 50%, lowering heating costs significantly.
📏 Space Efficient
2-3" of closed-cell matches R-20 batt performance in half the thickness.
Where We Apply Basement Spray Foam
- Foundation walls — Full-height coverage from sill plate to floor
- Rim joists — Critical air sealing at floor/wall junction
- Sill plate — Seals the wood-to-concrete connection where air infiltrates
- Window wells — Around basement window frames and bucks
- Utility penetrations — Pipes, wires, and ducts entering the foundation
Open-Cell vs Closed-Cell for Basements
For basements in Vaughan, we almost always recommend closed-cell spray foam:
- Closed-cell (recommended) — R-6.5/inch, vapour barrier at 2", moisture-resistant, adds wall rigidity
- Open-cell — Only suitable if basement is already dry with exterior waterproofing
Vaughan Building Code Requirements
Ontario Building Code (OBC) requires minimum R-20 for basement walls in Climate Zone 6 (which includes Vaughan). With closed-cell spray foam at R-6 to R-7 per inch, 3 inches achieves code compliance while also meeting vapour barrier requirements—no additional poly sheeting needed.
Basement Insulation FAQ — Vaughan
What R-value do I need for basement walls in Vaughan?
Ontario Building Code requires minimum R-20 for basement walls in Climate Zone 6. With closed-cell spray foam at R-6 to R-7 per inch, 3 inches provides R-18 to R-21 while also acting as your vapour barrier.
Should I insulate my basement ceiling or walls?
For finished or semi-finished basements, insulate the walls to bring the space into your home's thermal envelope. Ceiling insulation is only recommended if the basement will remain unheated and unconditioned.
Will spray foam stop basement moisture and condensation?
Yes. Closed-cell spray foam at 2 inches or more acts as a Class II vapour retarder, preventing warm interior air from contacting cold foundation walls where condensation forms. This eliminates the musty smell and mold risk common in Vaughan basements.
How much does basement spray foam insulation cost in Vaughan?
Basement spray foam in Vaughan typically ranges from $2.50 to $4.50 per square foot depending on foam type, thickness, and access. A typical 1,000 sq ft basement costs $2,500 to $4,500. We provide free quotes with exact pricing.
Get Your Free Basement Insulation Quote
Serving Vaughan, Woodbridge, Maple, Kleinburg, and Concord. Same-day site visits available.
Request Free Quote 📞 (647) 613-3626