Can You Put Vinyl Siding Over Old 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.

Can you put vinyl siding over old siding.

To cover a lap siding with vinyl the first thing you need to do is to cover the existing siding with a moisture prevention barrier and highly durable foam insulation. More than 50 years. With other siding types fiber cement engineered wood etc. While covering lap siding with vinyl is an option for some siding other varieties of lap siding can t be covered by vinyl.

The main concern to understand is that the hardieplank siding is going to be on the house for. On older homes any old siding vinyl or metal needs to be removed. Why siding over existing siding is a bad move. The manufacturers specifically say that to install their product over existing siding is to void the warranty.

Generally the best idea is to remove any existing siding from your exterior walls before installing the vinyl siding. Surprisingly many vinyl siding manufacturers state that it s perfectly acceptable to install their product over old siding. This type of siding can be placed over some existing siding but most will not be good. There are two options for this.

Installing vinyl siding over wood siding. Something you will want to keep in mind when making this decision is how long hardieplank will be on your home. Just like vinyl siding you ll need to ensure the siding surface is completely flat either by the old siding or by adding slats to the wall. Any imperfections in the wall will almost always show up in the siding.

If it isn t there will be more steps that need to take place before it becomes possible and you might need the help of wood siding repair contractors to have the bad boards replaced which isn t always easy to do for the homeowner himself. Many homeowners choose vinyl siding because it is relatively inexpensive easy for a do it yourselfer to install resists insects and rot and never needs. Yes you can put vinyl siding over existing wood siding assuming its condition is still good. Left unchecked small issues can become major problems that could end up costing thousands of dollars to rectify.

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 actual question is should the current siding be removed with osb installed or should the current siding remain to act as a substrate an additional layer beneath the top layer under the new hardieplank siding.