Air drafts sealing
Detailed Description
The Cold Spots and High Heating Bills in Your Toronto & GTA Home Have a Source — and It’s Usually Not What You Think
Most Toronto & GTA homeowners looking to reduce heating costs focus on visible insulation — attic, walls, basement. What they underestimate is air infiltration: the uncontrolled movement of air through gaps in the building envelope that bypasses all the insulation and carries conditioned air directly to the outside, and cold outside air directly in. A Toronto & GTA home with adequate insulation but significant air infiltration performs significantly worse than the insulation values suggest — because air bypasses the insulation rather than having to conduct through it. Addressing air sealing is consistently identified by energy auditors as the highest-impact per-dollar improvement in most existing Toronto & GTA homes.
At CNG Contracting, air draft sealing in Toronto & GTA is a systematic inspection of the building envelope — interior and exterior — identifying where air movement is occurring and sealing each penetration with the correct product. Not just the obvious gaps at doors and windows. The full range: attic floor penetrations, electrical outlets on exterior walls, plumbing penetrations, basement rim joist areas, and all the other paths that Toronto & GTA homes accumulate over decades of construction and renovation.
Where Air Leaks in Toronto & GTA Homes
- Attic Floor Penetrations: Every electrical box, light fixture, plumbing pipe, and partition wall top plate that passes through the ceiling into the attic is a potential air pathway — and in most Toronto & GTA homes, these are unsealed
- Basement Rim Joist: The area where the floor framing meets the foundation wall in Toronto & GTA homes is one of the largest air infiltration zones in the building
- Electrical Outlets and Switches on Exterior Walls: The cavity behind exterior wall boxes connects directly to the wall insulation gaps — cold air enters and heated air exits through these boxes in Toronto & GTA homes
- Plumbing and Mechanical Penetrations: Gaps around pipes and conduit through floors, walls, and ceilings throughout your Toronto & GTA home
- Recessed Lighting: Old-style non-IC-rated pot lights are open to the attic — a significant heat loss in any Toronto & GTA home with pot light ceilings
Systematic air draft sealing in your Toronto & GTA home addresses the heat loss that insulation alone can’t fix — and delivers measurable improvement in both comfort and heating costs. Book your assessment today.
Service Details
| Includes | Full building envelope inspection, air leak identification, systematic sealing with appropriate products |
| Time on site | Half day to full day depending on property size |
| Warranty | 2 years on workmanship |
| Licensed & insured | Yes |
| Service area | Toronto & GTA and surrounding GTA |
Frequently Asked — Air Sealing in Toronto & GTA
How do I know if my Toronto & GTA home has significant air infiltration?
Cold floors (particularly over crawlspaces or garages), rooms that are harder to heat than others, ice damming on the roof, and heating bills that seem high relative to the home’s insulation level are all indicators. A professional air sealing assessment at your Toronto & GTA home quantifies what’s there.
Is there a risk of over-sealing a Toronto & GTA home?
Tight homes need mechanical ventilation — this is well understood in modern construction. For most existing Toronto & GTA homes, the risk of over-tightening through handyman-level air sealing is minimal compared to the amount of infiltration present. We advise on ventilation adequacy as part of the assessment.
How do I book air sealing in Toronto & GTA?
Book online in under two minutes. Our Toronto & GTA team contacts you directly to schedule.
Air sealing in Toronto & GTA attic spaces also addresses the penetrations from electrical and plumbing that pass from conditioned space into the unconditioned attic — often the highest-impact single sealing opportunity in a Toronto & GTA home that hasn’t had attic air sealing done before.
SCHEDULE AN INSPECTION
Request your technical visit.
Tell us what you need and a certified specialist will visit you to evaluate your project and give you a real quote the same day.
WHY DO I NEED A TECHNICAL VISIT?
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1Real diagnosis in your home. A technician evaluates materials, measurements, access, and local regulations.
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2The visit cost is discounted from the project. The fee is fully credited to your final invoice once you approve the quote.
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3No commitment if you don’t approve the quote. If you don’t accept the quote after the visit, there is no obligation to proceed.
- Certified technicians — licensed & insured
- Real quote — same day as the visit
- No surprises — no hidden costs
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