Work the putty down into the holes and smear the putty over the top and edges of the defect.
Repair cracked cedar siding.
Cedar wood siding should be painted or stained every 6 years or sooner depending on the level of uv exposure in order to reduce the costs of repainting.
Remove the nails in the corner cap.
Once the paint starts to peel costs can quickly grow as sanding out walls is not cheap let alone replacing warped twisted and cracked siding panels.
Avoid polyurethane finishes as they can trap moisture below the surface of cedar.
Refinish the siding if just the repaired portion needs refinishing apply a deep penetrating wood stain in the color of your choice.
Sand the surface of the siding at the area of the crack with a sanding block.
Use long horizontal strokes with the block instead of short vertical strokes.
If the entire exterior needs to be refinished wash all the siding down with wood surface cleaner.
Forget the tape measure tom says.
Remove the nails on the lap board then use the claw of the hammer to split the board down the center image 1.
Once all the nails are removed from the adjoining board the damaged one should just pull out.
Instead you can size the replacement using the old clapboard as a template a simple technique that virtually guarantees a tight fit on the first try.
Sand 3 inches past the end of the crack.
Holes dents and other damage to siding can usually be fixed quickly and inexpensively.
Siding repair is best done with hand tools with one exception.
Score down the damaged lap siding with a utility knife.
Repairing minor defects in cedar siding step 1 use a putty knife to apply exterior wood putty to smaller cracks or holes in siding.
If the siding is unpainted stick with epoxy filler it s.