Patch Nail Hole In 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.

Patch nail hole in fiber cement siding.

Refer to manufacturer recommendations for products that are compatible with fiber cement. Patching fiber cement siding. Use your flat bar to pull the nails or put the bar on top of the nail heads. Put on a pair of rubber gloves.

Rinse the siding with clean water to remove the soapy residue. And tap them in by striking the bar. Apply the patch product to the damaged area with the flexible putty knife to fill in any indentations or holes. Mix a solution of 1 2 cup trisodium phosphate and 1 gallon of water.

Once the caulk is dry you can touch up the paint. Dip a soft bristle brush into the solution then scrub the cracked area of fiber cement siding to remove dirt and debris. Step 4 hold the knife roughly perpendicular to the siding patch to finish the surface of the patch and taper out the edges of the mortar patch blending it into the surrounding siding. Fold it up and wiggle the panel as you pull down panel usually pulls free.

If you have really big holes and cracks then the siding will probably have to be replaced altogether. 1 the installation guide for hardie board which is a brand of cement board siding recommends using caulking to fill nail holes. Buckled fiber cement siding is most likely to occur because the installer failed to give the recommended gap between the ends of the fiber cement boards and abutting vertical trim at corners windows doors etc. When i ve installed it i used a high quality exterior paintable calking after smoothing the edge of the holes.

Keep in mind that the patching will be obvious whether or not you paint over it so this is the best solution if the cracks and holes are in out of the way places that aren t readily noticeable. Its actually pretty easy to pry off a panel without cutting the nails.