Our prefabricated roof curbs reduce installation time and costs by ensuring compatibility between the fan, curb and roof opening.
Roof exhaust fan installation detail.
Install on metal roof in washington state;
An attic exhaust fan averages $100 to $450 installed.
Duct work to the roof fan.
Start in the attic and drill a hole through the roof in the desired vent location.
The fan should be installed on a curb and/or rail.
Caulking, flashing, and sealing of wall/roof penetration done by contractor or installer.
Direct drive fans are available with nominal wheel diameters ranging from 9 to 30 inches
Follow curb manufacturer’s instructions for proper curb installation.
Slope steel curbs waterproofing flashing (as per fan size) slope all around insulation 25 thk rigid slab opening duct t.o.s.s steel frame 300mm centers and with suitable mastic sealant riveted or bolted on.
From up on the roof, use a jigsaw or reciprocating saw to cut a.
Direct drive upblast centrifugal exhaust fan these fans are specifically designed for roof and wall mounted applications.
The fan should be installed on a curb and/or rail elevated not less than 14” above any surface.
Manufacturer’s installation and operating instructions.
When different types of cooking equipment are installed under a common hood, the entire hood shall be designed using.
One of our most popular roof mounted fan accessories is our exhaust fan safety handle.
For fan details and other accessories required see equipment schedules 5.
Curbs should be connected to structural roof members with at least four (3) lug screws, anchor bolts, or other suitable fasteners (not furnished) per curb flange.
Verify that the duct connection and fan inlet are properly aligned and sealed.