Installing New Siding Over Old

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

Installing new siding over old.

That s why it s important to make sure that the quote you get includes removal of the old siding. Foam board is however often added in order to help level out the wall when it has certain problems with it. Why siding over existing siding is a bad move. Never install vinyl siding over rotten wood.

It s especially affordable when it placed over existing siding because the labor of removing the old siding is not needed. Can you put new siding over old siding in general or do i need to remove the existing one. Just follow the manufacturer s installation instructions. There are a few things that you ll need to know when doing this however.

In new construction it typically is installed over wood wall sheathing wrapped with rigid foam insulation and a moisture barrier. The manufacturers specifically say that to install their product over existing siding is to void the warranty. Since you need a firm base to install vinyl siding you first need to remove old vinyl and expose the underlying wood. The first is your moving the siding of the house about 3 4 of an inch outward.

In most cases you can put new siding directly on top of old siding without having to remove the old siding first and in addition it will in fact add an addition layer of insulation thereby helping lower your energy bill. You can install vinyl siding over old wood siding but should not try to install new vinyl siding over old vinyl siding. With other siding types fiber cement engineered wood etc. On existing houses old vinyl or metal siding must be removed but.

Removing existing siding and installing osb has several benefits such as having brand new substrate on the home and the ability to inspect the wall cavity and all framing insulation and structural integrity of the home before replacing siding. You can put tyvek over the the existing t111 siding and then add your hardieplank over that.