Rectangular rooftop duct

Before you start

• You are on somebody else's roof.
• Before anything lands: who is the roofer, wh...
• Stage the needed tools and materials before lifting the section: Roof stands, sleepers, or engineered frames with approved bearing pads, weath....

Lay it out

1. Coordinate with the roofer before you set anything. Get the bearing detail...

Set and support it

1. Set and verify the approved supports before the connection is closed. Keep the joint from carrying the weight of the duct or fitting.
2. Use the approved support method for this condition: Rooftop stands, sleepers or engineered frames.

Make the connection

1. 1

   Coordinate with the roofer before you set anything. Get the bearing detail...