How to Repair Damaged Shiplap Siding

What You'll Need
Replacement shiplap siding
Pry bar
Circular saw
Wood chisel
Concrete coated # 8 or # 10 nails
Caulk and caulk gun
Paint or stain
Painting tools
Chalk line
Measuring tape
An assistant

Shiplap siding is a popular choice for many homes in America, and is effective at keeping out the elements and protecting your home. However, from time to time, shiplap siding can be damaged. It can split, crack or become infected by termites. Whatever the problem with shiplap siding, it can be easily repaired - if you know how. With that in mind, here is a simple step by step guide that will walk you through the process of repairing damaged shiplap siding. Let's get started.

Step 1 - Buy Replacement Siding

Go to your favorite home improvement store and purchase replacement shiplap siding for your home. If you don't have a sample piece to take to the store with you, take a photo and take it with you so that you can purchase siding that is as close a match as possible to that installed on your home. Visit as many home improvement stores or lumber yards as you need to in order to find the best match. If you know the contractor that built your home, he/she may be able to point you in the right direction.

Step 2 - Create Cut Line

Have someone help you and take the chalk line and create a rectangular line around the damaged section of shiplap siding. 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. use the level to make sure the chalk lines are level and straight.

Step 3 - Cut Out the Damaged Section of Shiplap Siding

Before you can use the circular saw to cut the damaged section of shiplap siding, you will need to score the cut line with a hammer and chisel. Take the chisel and place it on the chalk like and then strike the butt of the chisel with the hammer. Create a cut that is about 1/8 inch deep. Follow along the entire border of the chalk line and score the line with the hammer and chisel. Next, take the circular saw and adjust the cut depth so that it just barely passes through the shiplap siding. Follow along the scored cut line and cut out the the piece of siding. Don't cut the corners with the circular saw, but use the hammer and chisel to cut through the siding at the corners. Remove the cut out piece with a pry bar.

Step 4 - Measure and Cut New Siding Piece

Measure the cut out piece of siding and transfer the measurements to the new piece. Cut an identical piece of siding with the circular saw.

Step 5 - Install New Shiplap Siding

Insert the new piece of shiplap siding into the cut out area and nail with concrete covered siding nails.

Step 6 - Seal with Caulk

Run a bead of caulk along the edge of the newly installed shiplap siding. Don't apply too much caulk. Smooth out the caulk with your finger or putty knife.

Step 7 - Sand the Edges

After the caulk is dry, use the sandpaper to sand away the rough edges and built up caulk. Make the seams as smooth as possible.

Step 8 - Paint or Stain the New Siding

Paint or stain the new siding section to match the color of your home.