How To Repair Cracked Fiber Cement Siding

Refer to manufacturer recommendations for products that are compatible with fiber cement.

How to repair cracked fiber cement siding.

Step 2 replace the caulking. Cracking due to an impact on the surface of a fiber cement board is less likely because the material tends to dent rather than fracture when well supported. Step 1 clean the siding. The patch is mixed formed and spread to match the contours of the board.

This putty should be included in every fiber cement repair kit. 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. Mix the latex modified cementitious patching compound in a small bucket according to the manufacturer s. Before you do anything else you want to get the siding nice and clean.

How to repair fiber cement 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. Mix a solution of 1 2 cup trisodium phosphate and 1 gallon of water. An example would be the pock marked siding of homes facing a golf course caused by wayward golf balls something we see pretty regularly.

Step 3 repair any holes. To repair hole in fiber cement siding there is a special putty that can be used as a patch. You then let the patch dry and sand it to blend into the surrounding parts of the plank. Scoop up some of the.

Allow the patch to thoroughly dry and apply another thin layer of patching material if the first layer shrank during the drying process. Step 4 apply fresh paint.