Drill and countersink pilot holes for screws in two opposite corners.
How to make you own siding mounting block.
Siding mounting blocks ply gem mounts and blocks create a smooth stable surface for installing accessories on your home from lights and doorbells to electrical outlets water faucets and more.
A random orbital power sander is the best tool for the job.
Set the block into place as shown and screw it to 1 2 in.
Or mount it to a stud.
If you use a block without an electrical box shift the existing electrical box out so you can mount the fixture to it.
Connect the wires mount the fixture and caulk around the block so it s watertight.
Use a jigsaw to cut a hole in the block to fit around the outlet box.
Clamp the board to your work surface with a c clamp and sand with a belt sander to remove any ridge where the tip of the table saw blade removed the wedge from your siding lumber.
Sand both faces of the board thoroughly with 150 grit paper.
Constructed from high performance polymers our vinyl siding mounting blocks withstand extreme weather and hold their color for the life of your home.