How To Install Vinyl Siding Over Old Wood Lap Siding

If you do decide to cover your lap siding in vinyl you ll need to first layer the existing lap siding with highly durable foam insulation and a moisture prevention barrier.

How to install vinyl siding over old wood lap siding.

Left unchecked small issues can become major problems that could end up costing thousands of dollars to rectify. On older homes any old siding vinyl or metal needs to be removed. Generally the best idea is to remove any existing siding from your exterior walls before installing the vinyl siding. Remember that vinyl siding expands and contracts so you can t nail it securely into place.

Install the starter strip. There are two options for this. Once you have attached the first board to the starter strip you will want to check that it was level in its installation. Remove the siding and install oriented strand board commonly referred to as osb or to use the existing siding that s on the house now as substrate or layer beneath the top surface underneath the hardieplank 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 bite you down the road. Since you need a firm base to install vinyl siding you first need to remove old vinyl and expose the underlying wood. Never install vinyl siding over rotten wood. Because of expansion make sure to leave an extra of an inch 6 centimeters on each side of the panels.

Why siding over existing siding is a bad move. The most common practice when installing vinyl siding over existing wood shingles or clapboard is to first put up rigid foam or fan fold. Trim the panel lengthwise to fit the space and punch lugs protrusions in the edge of the vinyl every 8 inches or so in. The trims and all the siding have to hang somewhat loosely upon nails to enable the siding to grow and contract.

Using chalk mark intervals around the house where you will install the vinyl panels. This goes for fiber cement hardwood and masonite siding. While we recommend a full replacement vinyl siding can be installed over old wood siding but it requires an expert attention to detail knowledge of rotting wood mold and considerable preparation. The ends are then pushed into the j channel on the ends.

These products are designed primarily to pad imperfections on the walls so the new layer of siding will lay flatter. Fasten panels under windows and at the wall top with a snap lock punch.