Corrosion-Resistant Systems · Exterior, Coastal & Washdown Exposure
Seal exterior stainless penetration
Stainless duct — Roof or wall
Hardware guidanceUse exterior stainless trim bolts and washers.
Anti-seize / gallingUse anti-seize without contaminating sealant bond surfaces.
How to install it
- 1
Install approved curb/sleeve/flashing
- 2
support independently
- 3
use compatible weather and air seals
- 4
allow movement.
Quality check
- Penetration is weather-tight and movement-capable.
Stop and verify
Stop if roofing/waterproofing detail is unresolved.