Building Envelope
Air, water, and vapour control — the unseen layers that determine how long a wall performs.
The "envelope" is everything between the exterior cladding and the interior drywall — sheathing, weather barriers, flashing, insulation, and the air/vapor control layer. When the envelope is detailed correctly, the building can withstand thirty Canadian winters without rotting from the inside out. When it is detailed wrong, you find out in six years and the bill is six figures.
We work as the envelope contractor on commercial projects and as the wall-system installer on custom residential. Every project starts with a moisture-and-air strategy on paper before any material gets ordered.
A look at the finish.
Common questions.
The questions we hear most often on building envelope estimates.
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What does "building envelope" actually mean?
The envelope is the assembly of layers that separates conditioned interior space from exterior weather: cladding, drainage plane, weather barrier, sheathing, insulation, air barrier, vapour control, and interior finish. Each layer has a job. Most building problems are caused by one layer being missing, mislocated, or installed in the wrong sequence.
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How do I know if my building's envelope is failing?
Common signals: drafts at windows and electrical outlets, interior condensation, peeling paint or staining on exterior cladding, ice damming, high heating bills relative to the building size, and visible mould on interior corners of exterior walls. Any one of these warrants a wall-section inspection.
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Can the envelope be fixed without re-cladding the whole house?
Sometimes. Targeted repairs at windows, sills, and penetrations work when the rest of the assembly is sound. When the underlying weather barrier has failed across the wall, the cladding has to come off — there is no shortcut around stripping back to sheathing to fix the barrier behind it.
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Do you do moisture investigations and reports?
Yes. We open small test sections, photograph what is behind the cladding, document the failure mode, and provide a written remediation scope. On insurance and legal work this is often the deliverable on its own; on construction work it informs the repair quote.
Get your free building envelope estimate.
In-person assessment, fixed-scope written quote, one business-day reply. No subcontracted leads, no sales loop.
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