Installing Trim Over Siding

Existing wood siding must be in good shape with no rot or mold and fastened tightly to the wall.

Installing trim over siding.

Best way to cut vinyl siding and installation leave a 1 4 in. 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. 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. 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.

Last edited by jerry peck. Instruction on how to install exterior 2x4 trim around a new or old window. 01 28 2015 at 04 33 pm. Gap at all ends.

Then install the front facing trim so it overlaps the side trim. Vinyl siding must be installed against a flat surface. Cut the horizontal piece to size and snap it in place over the vertical moldings. The siding slides behind vinyl siding trim pieces that hide the gap and the cut end.

Lock the panel into the one below it then gently snug it up before nailing. For an attractive corner install the trim on the sides of your house flush to the face of the house. Why siding over existing siding is a bad move. If you choose to install your trim over your lap siding lp smartside 440 series trim is a fine choice.

If the wood siding is beveled or lapped you. Marking the position of each piece before. Before you replace the siding cut and install new j channels to prevent water from leaking into your home.