Repair Water Damage Lapp Siding

We tear off the damaged hardboard and replace it with fiber cement siding.

Repair water damage lapp siding.

To do this locate the seams around the 4 by 8 foot piece of plywood siding that are filled with caulk or silicone sealant. When creating the lines around the damaged section try keep the line as possible to avoid having to cut out more of the good shiplap siding than is needed. To cut out a damaged area use a square and a utility knife to scribe cut lines on each side of the damage. Using a circular saw set to the thickness of the siding complete as much of the cut as you can without cutting into the siding above the cut.

The repair is simple if you follow the details in the illustration above. Most damage to lap siding can be repaired with one of four techniques. 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. The sheathing and framing sometimes need repairs too but that is less common.

The client here was told by several contractors that his masonite siding was defective and needed to be re. Here s another typical handyandy exterior project. Wood siding should be primed on all four sides before installing to protect it from any type of moisture penetration. Most repairs will take less than an hour.

Here s how to repair damaged clapboards also known as bevel or lap siding. Be careful not to damage the sheathing. The width thickness and profile of the board should match perfectly. Have someone help you and take the chalk line and create a rectangular line around the damaged section of shiplap siding.

Wedge the board away from the house by driving wedges up under the damaged board to pull it out from the sheathing below. Besides prying out the rotten wood you may need to cut adjacent boards back a stud or two in either direction. That s because the end seams on wood lap siding are staggered across the wall and have to be made at wall stud locations. Before you begin removing damaged lap siding be sure you can acquire the right material to replace it.

How to repair siding shingles. In most cases it s necessary to remove more than just the damaged wood to make the repair less obvious.