Building-envelope penetrations

Maintain water/air continuity around pipes, cables, boxes, vents and retrofit supports.

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

Penetration without flashing/gasket
Restore drainage and air/water seal with compatible materials. Low penetration exposed to water
Correct before closing the wall and check concealed damage. Sealant alone on moving joint
Use appropriate geometry/backing/flashing rather than sealant alone. Details photographed
Archive before cladding/finishes.

What the professional checks

Restore air/water barrier continuity
Verify sealant/membrane compatibility

Official sources

CNRC/CCMC — pénétrations de l’enveloppe

Checked: 2026-08-22

V19

Edge systems to integrate into the project

V19 covers interfaces that become important when multiple home systems interact.

SIP/ICF