Replacing Rotted Hardboard Siding

The sheathing and framing sometimes need repairs too but that is less common.

Replacing rotted hardboard siding.

Using 2 inch siding nails attach the new wood piece. How to remove and replace siding. Watch this graphic depiction of the removal and replacement of hardboard siding. If needed replace the sheathing behind the siding using 1 2 plywood covered with builder s.

Remove damaged siding. We tear off the damaged hardboard and replace it with fiber cement siding. The process of replacing rotten wood siding isn t difficult. Place the new wood piece under the lower edge of the blank in the upper plank.

Thinner than most hardboard but it works in many cases has a comparable cost is highly rot resistant and carries a 50 year warranty. Consider replacing rotted areas with fiber cement siding. Cut fiber cement siding. To remove and replace damaged siding.

Remove damaged siding remove the deteriorated hardboard siding using a pry bar and chisel being careful not to damage. The spaces between each piece of hardboard and along the edges need to be filled with caulk. Face nail the top. Position the groove along the bottom part of the new wood piece onto the upper edge of the wood piece.

Cut fiber cement. The steps involve cutting away the rotten siding clearing out the old nails cutting the new siding to the appropriate length and fastening the siding as well as caulking it to make the siding watertight. Replace rotten sheathing if needed replace the sheathing behind the siding using 1 2 plywood covered with builder s. The nails should be placed into each of the individual wall studs.

You also need to stay on top of the caulking. Hardboard siding needs to be primed and painted just like wood. In most cases the original layer of building paper or housewrap at the bottom of the wall was enough to prevent water infiltration and damage beneath the siding. Remove any nails from the top piece of good siding.

Remove the deteriorated hardboard siding using a pry bar and chisel being careful not to damage. Blind nail the fiber cement siding in place starting with the bottom piece. Failure to do so can lead to moisture and insect infiltration that will in turn lead to rotting and deterioration of the boards.