Can Hardiplank Be Installed Over Existing Siding

Something you will want to keep in mind when making this decision is how long hardieplank will be on your home.

Can hardiplank be installed over existing siding.

James hardie provides a 1 year limited product warranty for hardiepanel used as skirting on a mobile home. What is hardiewrap weather barrier used for. And if a board does get wet but is not sitting in moisture for an extended period of time you can simply let it dry out before installing. Get some regular cdx plywood the same thickness as your t 111 fill in the gaps put the tyvek on there put the hardie on there.

However it needs to be installed in accordance with our written installation instructions for hardiepanel siding in regard to framing joints paint and clearences above ground. Several contractors have suggested that the wood siding need not be removed. Does this mean that hardieplank cannot be installed directly over existing wood siding without voiding the warranty. This would be on an older house but the wood siding is in good condition.

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. Hardie plank joints butt joints james hardie siding is 12 feet long which means that siding on your longer walls will need to join together. Left unchecked small issues can become major problems that could end up costing thousands of dollars to rectify. This is the main task to tackle to make sure that there are no preexisting issues on the home.

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. Hardiplank lap siding can also be installed over foam insulation up to 1 thick irregularities in framing sheathing and or foam insulation can mirror through the finished application. It s a perfect application for it because t 111 is nothing more than a textured plywood and a plywood makes a great sheathing. The actual question is should the current siding be removed with osb installed or should the current siding remain to act as a substrate an additional layer beneath the top layer under the new hardieplank siding.

Or directly to minimum 7 16 thick osb sheathing. Get rid of the rot.