Solar PV: roof attachment, structure and flashing

Coordinate loads, framing location, attachment method, flashing, roof membrane and future reroofing before penetrating the roof.

VERT / GREEN = documenter/entretenir · JAUNE / YELLOW = vérifier avant travaux · ROUGE / RED = arrêter le DIY et faire valider.

Attachment planned without known framing
Identify framing and approved attachment method before drilling. Roof near end of life
Compare reroof-before-PV against future removal/reinstallation. Flashing/membrane detail missing
Require a detail compatible with roofing and manufacturer. Structure/attachment plan documented
Keep photos, fastening documentation and applicable warranties.

What the professional checks

Verify structure and load path
Coordinate anchors, flashing and roofing

Official sources

RNCan — Guide de planification solaire PV

Checked: 2026-08-22

Related path

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