INSULATION PLANNING
Basement insulation before you finish the walls
Coordinate insulation with the condition of the foundation, the renovation layout and the surfaces that will become difficult to inspect later.
Explain the renovation plan
Tell the assessor whether the basement is finished, partly finished or exposed. Include your intended use, planned partitions and any services that will move. Note the timing of electrical, plumbing and finishing work. An insulation appointment made without that sequence can leave important junctions or areas outside the agreed scope.
Record water history
List known leaks, flooding, repairs and recurring dampness, even if the walls look dry on inspection day. NRCan’s basement guidance considers moisture and insulation together. Ask the project team to identify unresolved conditions before they recommend covering a wall. A written exclusion is better than a vague assurance that a new finish will hide the problem.
Compare the assembly
Ask for the actual proposed wall build-up, product names, transition details and finishing responsibilities. Confirm which junctions are included and how the work connects to adjacent insulated areas. The proposal should explain its assumptions about existing materials and any inspection needed before construction. Material price alone does not describe the completed wall.
Keep decisions accessible
Before the walls close, agree on documentation and inspection hold points with the contractor. Keep photographs, product records and written changes. Ask who handles damaged or unexpectedly damp material discovered during preparation. This is also the time to clarify who reinstates trim, doors or finishes, rather than finding those items missing from the final invoice.
Turn the questions into a project brief
Choose your city, explain the area of concern and ask for a written scope.
Prepare your enquiry Browse local planning pages →