Can You Put Hardie Board Over Wood Siding

The hardie website is unclear on this issue.

Can you put hardie board over wood siding.

Yes hardiebacker 1 4 cement board may be used in a shower. 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. Without properly inspecting and examining your current siding it s probably hard to tell its actual condition. To achieve the look you ll use hardiepanel vertical siding as your base material.

The board must be mechanically fastened every 8 on center to the wood or metal studs spaced a maximum of 16 on center. 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. Several contractors have suggested that the wood siding need not be removed.

Furring strips can be 1 by 2 inch or. 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. Thank you for any information. Hardiplank is a fiber cement siding made for exterior use to cover a structure in a long lasting sheathing.

The james hardie manual actually agrees that current siding works fine for a substrate but only if it s in acceptable condition. Does this mean that hardieplank cannot be installed directly over existing wood siding without voiding the warranty. This is the main task to tackle to make sure that there are no preexisting issues on the home. That said this is where you want to start when deciding if you should keep it.

James hardie fiber cement siding is engineered to stand up beautifully whatever the elements and comes with the option for an authentic woodgrain finish. 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. A vapor barrier is needed if required by local building codes.