How To Install Vinyl Siding Over Old Wood Lap 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.

How to install vinyl siding over old wood lap siding. Once you have attached the first board to the starter strip you will want to check that it was level in its installation. Using chalk mark intervals around the house where you will install the vinyl panels. You can install vinyl siding over old wood siding but should not try to install new vinyl siding over old vinyl siding. While vinyl lap siding is the easiest kind to install it still happens one panel at a time starting from the bottom starter strip.

Remember that vinyl siding expands and contracts so you can t nail it securely into place. Since you need a firm base to install vinyl siding you first need to remove old vinyl and expose the underlying wood. Fasten panels under windows and at the wall top with a snap lock punch. On older homes any old siding vinyl or metal needs to be removed.

Because of expansion make sure to leave an extra of an inch 6 centimeters on each side of the panels. 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. Install the starter strip. 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 trims and all the siding have to hang somewhat loosely upon nails to enable the siding to grow and contract. Trim the panel lengthwise to fit the space and punch lugs protrusions in the edge of the vinyl every 8 inches or so in. There are two options for this. Generally the best idea is to remove any existing siding from your exterior walls before installing the vinyl siding.

This goes for fiber cement hardwood and masonite siding. The main concern to understand is that the hardieplank siding is going to be on the house for. 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. These products are designed primarily to pad imperfections on the walls so the new layer of siding will lay flatter.

Why siding over existing siding is a bad move. Never install vinyl siding over rotten wood.