Installing Siding Over Old Siding

Why siding over existing siding is a bad move.

Installing siding over old siding. Installing vinyl siding over wood siding wood must be sound. The manufacturers specifically say that to install their product over existing siding is to void the warranty. 6 tips for installing vinyl siding over old wood siding you can install vinyl siding over old wood siding but should not try to install new vinyl siding over old vinyl siding. 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.

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. Take your measurements to the hardware store and order your choice of vinyl siding. Vinyl siding must be installed against a flat surface. There are two options for this.

Never install vinyl siding over rotten wood. With other siding types fiber cement engineered wood etc. That s why it s important to make sure that the quote you get includes removal of the old siding. You ll need to remove and replace any rotten areas before you install vinyl.

Existing wood siding must be in good shape with no rot or mold and fastened tightly to the wall. The main concern to understand is that the hardieplank siding is going to be on the house for a very long time. If the wood siding is beveled or lapped you. Surprisingly many vinyl siding manufacturers state that it s perfectly acceptable to install their product over old siding.