Can You Put Vinyl Siding Over Old Siding

Surprisingly many vinyl siding manufacturers state that it s perfectly acceptable to install their product over old siding.

Can you put vinyl siding over old siding.

While covering lap siding with vinyl is an option for some siding other varieties of lap siding can t be covered by vinyl. There are two options for this. Installing vinyl siding over wood siding. Why siding over existing siding is a bad move.

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. With other siding types fiber cement engineered wood etc. Any imperfections in the wall will almost always show up in the siding.

On older homes any old siding vinyl or metal needs to be removed. 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. 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. 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.

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. 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. This goes for fiber cement hardwood and masonite siding. More than 50 years.

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. The main concern to understand is that the hardieplank siding is going to be on the house for. 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.

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. This type of siding can be placed over some existing siding but most will not be good.