Should I ask a contractor to confirm they are meeting NB building code R-value requirements before starting insulation work in Bathurst?

Yes, absolutely — and in Bathurst specifically, you should push for values that exceed the minimums, not just meet them.

Confirming code compliance before work starts is one of the smartest things a homeowner can do, and it costs you nothing but a direct conversation. Northern NB communities like Bathurst accumulate 5,200+ heating degree days per year — among the coldest conditions in the province — which means the building code minimums represent a floor, not a target.

What to Ask Your Contractor

Before signing anything, ask your contractor to confirm in writing the R-values they plan to achieve in each assembly: attic, walls, basement walls, and rim joists. The current NB Building Code minimums are R-50 in the attic (with R-60 recommended for Bathurst's climate), R-22 to R-28 effective for above-grade walls (which requires accounting for thermal bridging through studs, not just the batt value), R-17 to R-20 for below-grade basement walls, and R-10 at the slab perimeter.

The phrase "effective R-value" matters here. A contractor who quotes you "R-22 walls" using only 2x6 fibreglass batts is not giving you the full picture. Wood studs conduct heat at roughly R-6 and occupy about 25% of your wall area, which drags the whole-wall effective R-value down to around R-16 — well short of what the code intends. Achieving true R-22+ performance requires continuous exterior insulation (rigid foam or mineral wool board) over the sheathing to eliminate that thermal bridging. A knowledgeable contractor will understand this distinction immediately. One who doesn't is worth questioning further.

Code Compliance Is a Starting Point, Not the Finish Line

For a Bathurst home, think of code minimums as the baseline that prevents the worst outcomes — not the level that delivers real comfort and efficiency. Many NB homeowners who insulate to exactly R-50 in the attic and R-22 in the walls still find their homes drafty and expensive to heat, because air sealing was skipped or done poorly. The code requires 3.5 ACH50 air tightness for new construction, but air sealing is rarely discussed in insulation quotes unless you ask. Confirm that air sealing is part of the scope — particularly at attic penetrations, rim joists, and the basement sill plate — before work begins.

Also confirm that the vapour barrier installation meets code: continuous 6-mil polyethylene on the warm (interior) side of all exterior wall and ceiling assemblies, sealed at all seams and penetrations with acoustical sealant. In Bathurst's cold winters, a vapour barrier with gaps is nearly as bad as no vapour barrier at all.

Practical Steps Before Work Starts

Ask for the planned R-values and insulation types in writing — a simple line on the quote is sufficient. If you're eligible for NB Power's Total Home Energy Savings Program or the Canada Greener Homes Grant (combined rebates up to $10,000), you'll need a pre-retrofit EnerGuide evaluation by a certified energy advisor before any work begins. That evaluation will independently confirm what your home needs and what the post-retrofit targets should be, giving you an objective benchmark to hold your contractor to.

You should also verify that your contractor carries general liability insurance and WorkSafeNB coverage — particularly important for spray foam work, which involves chemical handling and requires proper training and respiratory protection.

Hire a professional for spray foam, blown-in, and dense-pack wall insulation — these require specialized equipment and training to achieve the density and coverage that code compliance actually demands. Adding attic batts yourself is a reasonable DIY project, but confirming code compliance on a full insulation upgrade is a job for a qualified contractor you've vetted carefully.

New Brunswick Insulation can match you with local insulation professionals in the Bathurst area at no cost. You can also browse contractors through the New Brunswick Construction Network directory at newbrunswickconstructionnetwork.com/directory?category=insulation.