You would normally use a leg kit which the cooler would be attached to then the bottom of leg kit would be nailed or screwed to roof under shingles or other roofing material.
How to install evaporative cooler roof jack.
Install the cooler duct a power wire and a thermostat wire leaving excess wire to allow a thermostat installation inside the home.
Use two self tapping screws to fasten cover plate to roof jack assembly.
Install supporting leg kit.
Any screws used to mount brackets to the roof should be coated with tar to prevent water entry.
Set cooler in position on roof jack.
Install a duct transition piece if needed for a round flexible duct.
Cooler installation kit note.
Apron collar and flex duct not shown sheet metal slide in damper for winter use only large cover plate small cover plate barometric damper roof jack assembly rja 12 horizontal run level vertical rise roof.
The multi pitchtm roof jack serves only as an air distribution plenum and is not intended to support the cooler s full operating weight load.
Use roof tar or waterproofing membrane to seal all openings.
Installed swamp cooler on roof.