We cut the epdm rubber exactly where the markings were.
Roof mtd ac curb detail.
Attach counter flashing with fastener through the wooden nailer.
Typical roof curbs the curb should be structurally capable of supporting intended loads and designed such that drains power lines etc do not penetrate roof fl ashing.
Roof curbs for standing seam metal roofs pick the proper material.
The curb in the video below was installed on an epdm single ply roof membrane.
The curb was supplied by the the heating and cooling company located in norwalk ct.
If the curb is mounted on the roof deck additional support is necessa ry directly below the curb flanges to minimize vibration.
Do not overlap counter flashing over the top of the roof curb.
Mike tavolacci marked exactly where the curb would be positioned on the roof.
Counter flashing should extend to the bottom of the roof curb drip lip.
Free cad detail download of a prefabricated roof curb to be used in your architectural section cad drawings.
The curb should be furnished with a wood nailer which provides a minimum of 3 5 of nailer surface mounted at the top of the curb to permit mechanical attachment of.
As a general rule the curb should be placed directly on the roof support members.
They can be selected to fit the specific type of roof such as flat pitched or ridged.
If the roof curb will be mounted on a new building it can be assembled at any convenient location and installed as soon as the roof support members are in place.
Use tack welding or other suitable fastening method to secure the roof curb in place.
Roof curbs are support structures for fans and ventilators.
Here is the flat roof curb installation process.