Can You Put Hardie Board Over Wood Siding

A vapor barrier is needed if required by local building codes.

Can you put hardie board over wood siding.

Furring strips can be 1 by 2 inch or. This is the main task to tackle to make sure that there are no preexisting issues on the home. 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. Though generally used over wooden house sheathing you can mount your hardiplank siding over brick with only few preparatory steps.

Hardie plank siding has a nail line across the top of the board that is 1 down from the top and nails are supposed to fall between and 1 from the top of the board to give the best hold. The board must be mechanically fastened every 8 on center to the wood or metal studs spaced a maximum of 16 on center. Does this mean that hardieplank cannot be installed directly over existing wood siding without voiding the warranty. To achieve the look you ll use hardiepanel vertical siding as your base material.

However we recommend hardiebacker 500 if you need to make a smooth transition to drywall. Several contractors have suggested that the wood siding need not be removed. Hardiplank is a fiber cement siding made for exterior use to cover a structure in a long lasting sheathing. 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.

That said this is where you want to start when deciding if you should keep it. The hardie website is unclear on this issue. 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. Thank you for any information.

Although i do not recommend siding over existing siding i suppose a case could be made for doing so if you had an asbestos shingled house that was in great shape and you wanted to retain the fire retardant protection of the asbestos but still reside the house cheaply. The james hardie manual actually agrees that current siding works fine for a substrate but only if it s in acceptable condition. Without properly inspecting and examining your current siding it s probably hard to tell its actual condition.