Cement Siding Over Existing Hardie Board

We ve been providing a better way to build for over 100 years.

Cement siding over existing hardie board.

If hardie is installed too close to these surfaces there is a chance that the paint will start to bubble and peel. James hardie siding is made of cement so it will absorb moisture if it is installed like this. Why siding over existing siding is a bad move 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. Without properly inspecting and examining your current siding it s probably hard to tell its actual condition.

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. Find james hardie fiber cement siding at lowe s today. Modern building products like fiber cement siding make it possible to achieve an identical aesthetic with more durable materials for a lower maintenance siding solution. Keeping your existing siding.

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. The james hardie manual actually agrees that current siding works fine for a substrate but only if it s in acceptable. Left unchecked small issues can become major problems that could end up costing thousands of dollars to rectify. 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. That said this is where you want to start when deciding if you should keep it.