How To Repair Cement Board Siding

Dip a soft bristle brush into the solution then scrub the cracked area of fiber cement siding to remove dirt and debris.

How to repair cement board siding.

Refer to manufacturer recommendations for products that are compatible with fiber cement. Put on protective eyewear and a face mask. Fiber cement siding looks like wood but it s actually a tough industrial material alternative that s waterproof fire proof insect resistant making it a very popular choice for most homeowners. Blind nail the fiber cement siding in place starting with the bottom piece.

Put on a pair of rubber gloves. Then using a pry bar gently lift the bottom edge of the overlapping siding. Remove any nails from the top piece of good siding. Use a plastic putty knife to apply the patching material to the damaged area filling in the area and shaping the patch to match the original contours of the siding.

Rinse the siding with clean water to remove the soapy residue. This will allow you to remove the nails without damaging the top piece of siding. Allow the patch to thoroughly dry and apply another thin layer of patching material if the first layer shrank during the drying process. Prime and paint new siding to match the old.

Work your way down the board prying the bottom edge up and loosening the nails. Watch this video to find out more. Face nail the top piece of fiber cement siding through the old siding. Repair or patching fiber cement board siding dents chips cracks and other minor surface damage in james hardie siding and trim products can be filled with cementitious patching compound.