How To Level A Roof Curb

The length goes the direction of the slope with a 1 starting distance off the top of the roof.

How to level a roof curb.

The parameters are 4 w x 63 l with a 1 2 12 slope. Secure the curb to the roof support members. Nail felt into place. Placing the curb on and attaching it to the ribs also allows better transitioning from under the roofing on the upslope end to cover the roof on the downslope end.

Remove any twist within the cu rb due to roof supports and square the curb. In most cases the roof top unit base rail seats down around the original roof curb naturally making the unit larger than the roof curb itself. I have a curb going around an opening in the roof and everything works. Install cant strips around the curb.

But the top of the curb slopes with the roof slope. Instead coordinating the curb size with the rib spacing to provide a rib to rib curb eliminates fasteners down both sides of the curb in the pan of the roof panels. I want it to be level on both ends. Bring field supplied roofing felt up to the top of the curb nailing strips.

Here at curbco we re happy to create curb for sloped roofs as long as we have the data we need. First the basic design of the curb should take into account the roofing components so that it can be properly flashed into the roof system. Instead measure the highest point of the roof curb that is roofed into the building or right below the unit base rail. See two downloadable forms on our website welded rtu curbs and calculating the pitch of a roof for a visual representation of this data in principle it s straightforward enough.