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Insulation & Air Sealing · Air Sealing & Draft Reduction

Seal the Gaps. Feel the Difference.

Even well-insulated homes lose conditioned air through gaps and penetrations. Air sealing addresses that unwanted airflow and complements insulation improvements.

An installer in safety glasses and gloves sealing around a window frame with a caulking gun

What we seal

Where we seal.

Air sealing always preserves required ventilation and fire-safety provisions. A tighter home may need planned ventilation, and homes with naturally vented gas or oil appliances need their venting checked.

Attic hatch sealing

Weatherstripping and insulating the hatch so it isn’t a hole in the ceiling.

Attic penetrations

Sealing around wiring, plumbing and fixtures, with fire-rated materials where required.

Windows and doors

Weatherstripping, door sweeps and suitable caulking.

Rim joists

Sealing the gaps where the house meets the foundation.

Plumbing and electrical penetrations

Sealing openings with materials suited to each assembly.

Accessible ducts

Sealing joints with approved mastic or listed tape, never ordinary cloth duct tape.

Garage-to-home

Keeping garage air out while maintaining fire separation.

What we consider

Done right for your home.

Ventilation

A tighter home may need planned fresh air, such as an HRV or ERV.

Combustion safety

Naturally vented gas or oil appliances need their venting checked.

Fire safety

Fire-rated assemblies and required clearances are never compromised.

Fewer drafts · More even temperatures · Works with insulation for better results

How we work

From drafty rooms to better comfort.

1

Tell us about your home

Your comfort concerns: drafts, cold rooms or high bills.

2

Review the conditions

Existing insulation, likely leakage points and moisture.

3

Recommend the right approach

Appropriate materials and the scope of work.

4

Complete the work

Qualified installation, coordinated by us, with follow-up.

Questions

Frequently asked questions

What is air sealing?

Closing gaps where air leaks in and out of the home, around hatches, wiring, pipes, windows and rim joists.

Should air sealing come before attic insulation?

Yes, usually. Leaks are much harder to reach once new insulation covers them.

Can too much air sealing cause problems?

A tighter home needs planned ventilation, and fuel-burning appliances need their venting checked. Done properly, it improves comfort safely.

A more comfortable home starts here.

Tell us what you’re noticing at home, and we’ll help you explore the right solution.

Get a Free Consultation

Already a customer with a service issue? Request service online, call 1‑888‑770‑7179 or email service@nexhome.ca.

Get my free consultation

Tell us what you are looking at and we will come back with real numbers — what it costs, what you qualify for, and what we would recommend.

No obligation. We will call once — if it is not for you, tell us and that is the end of it.