How To Repair A Chip Edge In Cement Fiber Siding

Allow the patch to thoroughly dry and apply another thin layer of patching material if the first layer shrank during the drying process.

How to repair a chip edge in cement fiber siding.

Mix a solution of 1 2 cup trisodium phosphate and 1 gallon of water. Refer to manufacturer recommendations for products that are compatible with fiber cement. To clean it start by taking a light wire brush and dipping it in a buck of water mixed with a cup of bleach and some dishwashing detergent. Scrub and clean the surface of the repair area with a stiff bristle brush.

Fiber cement lap siding is heavier than wood and requires a special diamond tipped blade or a tungsten carbide saw blade to cut. 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. Dip a soft bristle brush into the solution then scrub the cracked area of fiber cement siding to remove dirt and debris. Step 2 sand over the damaged area lightly but thoroughly with a medium grit sandpaper to smooth any jagged edges and create an easy grip surface for the patch product.

Step 4 mix the quick setting cement using a margin trowel by adding 5 parts cement to 1 part quikrete acrylic fortifier until a lump free putty consistency is achieved. 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. Rinse the siding with clean water to remove the soapy residue. Step 3 thoroughly rinse the repair area after cleaning.

Scrub away at any bits of mold mildew or stains keep in mind that tough persistent stains might just have to be painted over.