Install New Siding Over Old Siding

Vinyl siding must be installed against a flat surface.

Install new siding over old siding.

One major stipulation with the james hardie siding warranty is that it specifically states that if any project is not installed according to the best practices standards the warranty on that material is null and void. Existing wood siding must be in good shape with no rot or mold and fastened tightly to the wall. Even though most reputable contractors will never install siding over existing siding there are knuckleheads out there that will say you can do it and it s not a problem. 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.

If the wood siding is beveled or lapped you. How to install vinyl siding over wood siding measure the amount of vinyl siding that you ll need to order. Can you put new siding over old siding in general or do i need to remove the existing one. The manufacturers specifically say that to install their product over existing siding is to void the warranty.

Surprisingly many vinyl siding manufacturers state that it s perfectly acceptable to install their product over old siding. Never install vinyl siding over rotten wood. There are online siding calculators that will help you. 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.

The first is your moving the siding of the house about 3 4 of an inch outward. Start with the side of your house with the least. That s why it s important to make sure that the quote you get includes removal of the old siding. Why siding over existing siding is a bad move.

Since you need a firm base to install vinyl siding you first need to remove old vinyl and expose the underlying wood. It s especially affordable when it placed over existing siding because the labor of removing the old siding is not needed. 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.

Foam board is however often.