Project planning · Spray Insulations

Insulation and air sealing: write two clear scopes

By Industry Army Marketing (IAM) · September 28, 2026

A room can feel uncomfortable for more than one reason. Ask the assessment to distinguish heat flow through the assembly from unwanted air movement, then connect the proposed work to the observed problem.

Describe the symptoms

Record which rooms are uncomfortable, the weather conditions and whether the problem changes with wind or equipment operation. Photograph accessible gaps and unfinished junctions without disturbing existing materials. These observations help an assessor decide what to investigate; they do not identify the solution by themselves.

Locate the building boundaries

Ask the project team to mark the intended insulation and air-control boundaries on a section or sketch. Junctions between walls, floors and roof areas deserve explicit attention. Natural Resources Canada treats insulation and air leakage control as related parts of the building envelope, rather than interchangeable tasks.

Make the proposal checkable

Request separate descriptions of insulation areas, air-sealing locations, access work and reinstatement. Agree how completed work will be reviewed and which areas remain inaccessible. A price per area is easier to compare when both bidders are working from the same boundary drawing.