Can You Install Hardie Siding Over Existing Siding

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.

Can you install hardie siding over existing siding. 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. This is important before installing hardie plank siding or any siding for that matter. On existing houses old vinyl or metal siding must be removed but vinyl can be installed over old wood siding without removing it.

But if you re considering using another type of siding for instance fiber cement siding or james hardie siding you may have the same options. Even if you don t have damage and want to install new osb we can do that. One major stipulation with the james hardie siding warranty is that it specifically states that if. Number two even if you tried to match the exposure of the existing siding let s say the dutch siding is 5 on center and you picked 6 1 4 hardi that would also have a 5 exposure so that you would always be nailing.

Number one you can t shoot the hardiplank siding into the voids in your dutch lap siding. Hardie plank joints butt joints james hardie siding is 12 feet long which means that siding on your longer walls will need to join together. And if a board does get wet but is not sitting in moisture for an extended period of time you can simply let it dry out before installing. Imo it would not be a good idea to go over it.

This type of siding can be placed over some existing siding but most will not be 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. Installing vinyl over wood siding does require considerable.

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.