Can You Put Hardie Board Over Wood Siding

Without properly inspecting and examining your current siding it s probably hard to tell its actual condition.

Can you put hardie board over wood siding.

Hardiplank is a fiber cement siding made for exterior use to cover a structure in a long lasting sheathing. To achieve the look you ll use hardiepanel vertical siding as your base material. Yes hardiebacker 1 4 cement board may be used in a shower. This is the main task to tackle to make sure that there are no preexisting issues on the home.

The board must be mechanically fastened every 8 on center to the wood or metal studs spaced a maximum of 16 on center. According to the best practices manual from james hardie existing siding can be used as a substrate as long as it is in good condition meaning that it is not warped bowed curling delaminated or rotting. Why siding over existing siding is a bad move. This would be on an older house but the wood siding is in good condition.

James hardie fiber cement siding is engineered to stand up beautifully whatever the elements and comes with the option for an authentic woodgrain finish. The james hardie manual actually agrees that current siding works fine for a substrate but only if it s in acceptable condition. If the wood siding is beveled or lapped you will need vertical furring strips 16 inches apart covered with rigid foam board to provide a flat surface. Though generally used over wooden house sheathing you can mount your hardiplank siding over brick with only few preparatory steps.

Does this mean that hardieplank cannot be installed directly over existing wood siding without voiding the warranty. Any lower and you might see a few nail heads poking through the bottom of the next board any higher and your siding is likely to be loose and. The hardie website is unclear on this issue. A vapor barrier is needed if required by local building codes.

That said this is where you want to start when deciding if you should keep it. However we recommend hardiebacker 500 if you need to make a smooth transition to drywall. Thank you for any information. Several contractors have suggested that the wood siding need not be removed.