Can You Put Vinyl Siding Over Old Siding

Why siding over existing siding is a bad move.

Can you put vinyl siding over old siding.

Installing vinyl siding over wood siding. With other siding types fiber cement engineered wood etc. The manufacturers specifically say that to install their product over existing siding is to void the warranty. Yes you can put vinyl siding over existing wood siding assuming its condition is still good.

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. This goes for fiber cement hardwood and masonite siding. There are two options for this. However it is quite difficult to install vinyl over other varieties of lap siding because any imperfections in the wall will show up after installing the new siding.

The main concern to understand is that the hardieplank siding is going to be on the house for. Generally the best idea is to remove any existing siding from your exterior walls before installing the vinyl siding. Something you will want to keep in mind when making this decision is how long hardieplank will be on your home. On older homes any old siding vinyl or metal needs to be removed.

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. 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. 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. 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.

Left unchecked small issues can become major problems that could end up costing thousands of dollars to rectify. While covering lap siding with vinyl is an option for some siding other varieties of lap siding can t be covered by vinyl. More than 50 years. This type of siding can be placed over some existing siding but most will not be good.

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. Any imperfections in the wall will almost always show up in the siding.