Cement Siding Over Existing Hardie Board

Jim talks about when and how to put your new siding right over your existing siding.

Cement siding over existing hardie board. 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. Imo it would not be a good idea to go over it. Left unchecked small issues can become major problems that could end up costing thousands of dollars to rectify. The james hardie manual actually agrees that current siding works fine for a substrate but only if it s in acceptable.

James hardie is the world leader in fiber cement siding and backerboard. This is the main task to tackle to make sure that there are no preexisting issues on the home. James hardie fiber cement siding is engineered to stand up beautifully whatever the elements and comes with the option for an authentic woodgrain finish. 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.

James hardie siding is made of cement so it will absorb moisture if it is installed like this. 0 312 in x 8 25 in x 144 in hardieplank primed woodgrain lap fiber cement siding panel. If hardie is installed too close to these surfaces there is a chance that the paint will start to bubble and peel. Without properly inspecting and examining your current siding it s probably hard to tell its actual condition.

Number one you can t shoot the hardiplank siding into the voids in your dutch lap siding. To achieve the look you ll use hardiepanel vertical siding as your base material. Keeping your existing siding.