Installing Trim Over Siding

Yes you may be able to save some money by not removing the old siding but that old siding could be hiding problems that may.

Installing trim over siding.

If the wood siding is beveled or lapped you. The most common approach here is to install sill trim at the soffits rip down the top course of siding and crimp the siding so the sill trim holds it in place. Vinyl siding must be installed against a flat surface. Lock the panel into the one below it then gently snug it up before nailing.

Instruction on how to install exterior 2x4 trim around a new or old window. Installing vinyl siding over wood siding wood must be sound. Then install the front facing trim so it overlaps the side trim. Gap at all ends.

Even though most reputable contractors will never install siding over existing siding there are knuckleheads out there that will say you can do it and it s not a problem. This works fine most of the time but always add a few blobs of caulking inside the bottom lip of the top course for extra security. For an attractive corner install the trim on the sides of your house flush to the face of the house. Before you replace the siding cut and install new j channels to prevent water from leaking into your home.

Existing wood siding must be in good shape with no rot or mold and fastened tightly to the wall. Cut the horizontal piece to size and snap it in place over the vertical moldings. Why siding over existing siding is a bad move. Last edited by jerry peck.

If you choose to install your trim over your lap siding lp smartside 440 series trim is a fine choice. 01 28 2015 at 04 33 pm. Best way to cut vinyl siding and installation leave a 1 4 in.