Should I hire a separate air sealing contractor or ask my insulation company to handle both in Oromocto?

Most professional insulation contractors in the Oromocto area handle both air sealing and insulation as part of a comprehensive service — and this is actually the ideal approach since these two building envelope improvements work as an integrated system.

Air sealing and insulation are inseparable partners in New Brunswick's cold climate. Air sealing without insulation leaves you cold, while insulation without air sealing wastes 30-50% of the thermal benefit because warm air continues leaking through gaps. The best insulation contractors understand this relationship and include thorough air sealing as a standard part of their service, not an add-on.

When interviewing insulation contractors for your Oromocto project, ask specifically about their air sealing process. A quality contractor should describe sealing attic penetrations (pot lights, plumbing stacks, electrical boxes, attic hatches), rim joists, basement air leaks, and using proper materials like acoustical sealant, expanding foam, and weatherstripping. They should also mention blower door testing to identify leaks and verify results — this testing is required for NB Power rebate eligibility anyway.

The advantage of using one contractor for both services is coordination and accountability. Air sealing must happen before blown-in insulation, and the contractor needs to understand how their insulation choice affects vapour management and air barrier continuity. A spray foam contractor, for example, knows that closed-cell foam provides both insulation and air sealing in one application for rim joists and basement walls. A cellulose contractor should seal penetrations first, then blow insulation to the proper density.

However, some situations benefit from separate specialists. If you're doing a comprehensive whole-home retrofit that includes major air sealing (like sealing and insulating a stone foundation, addressing complex cathedral ceiling assemblies, or dealing with UFFI removal), you might want an energy advisor or building envelope specialist to design the air sealing strategy first. These professionals can perform detailed blower door testing, thermal imaging, and create a prioritized air sealing plan that the insulation contractor then follows.

For most Oromocto homeowners, the practical approach is finding an insulation contractor who demonstrates solid air sealing knowledge during the estimate process. Ask them to walk through your home and identify the major air leakage points — attic hatch, rim joists, basement penetrations, electrical outlets on exterior walls. A good contractor will spend time in your basement and attic looking for these details, not just measuring square footage for a quick insulation quote.

Red flags include contractors who: focus only on R-values without mentioning air sealing, suggest insulating over obvious air leaks, don't ask about blower door testing, or treat air sealing as an expensive add-on rather than standard practice.

Since Oromocto has many homes from the 1960s-1980s with original insulation and significant air leakage, the combined approach typically provides the best value and results. Find local insulation contractors through the New Brunswick Construction Network who can handle both aspects of your building envelope upgrade professionally.