Patching Cement Board Siding

These areas include but not limited to penetrations flashings plank and trim connections and in some cases between plank joints.

Patching cement board siding.

Though it is a tough wearing product the surface of the siding can sometimes be damaged during installation by unusual wear or by impact. 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. For holes larger than 1 2 inch in diameter use a carton knife or carbide tipped tool to cut a v shaped groove behind the edges of hole. If its blind nailed you can usually stick a couple of wood shims under the next clap to give you a bit of clearance.

0 312 in x 8 25 in x 144 in hardieplank primed woodgrain lap fiber cement siding panel. Refer to manufacturer recommendations for products that are compatible with fiber cement. Dip a soft bristle brush into the solution then scrub the cracked area of fiber cement siding to remove dirt and debris. Use wood shims to hold the top board away from the wall while you continue to remove nails along the length.

Make sure that the siding is completely dry from the washing and that the caulk and patches are dry too. Fiber cement siding repair or patching re applying caulking when it has begun to show signs of wear can help keep moisture from getting into the wall cavity. Depending on the size of your house you may need a ladder to reach the area of siding near the roof. Apply the patch product and paint on a day with no rain to speed drying and curing time and prevent water damage to your patch project.

Using a stiff brush mix the patch material specifically intended for fiber cement following the manufacturer s directions carefully. Fein multimaster is excellent for this. Put on a pair of rubber gloves. Use the carbide grit blade to cut out the bulk of the clap.

Remove the nails and countersink any nubs that might prevent your new siding from sliding up under the old. Mix a solution of 1 2 cup trisodium phosphate and 1 gallon of water. Rinse the siding with clean water to remove the soapy residue. 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.

Use only as much water as the manufacturer recommends. Finally now that your siding is clean and renewed it s ready to paint. This will allow the patching compound to lock in behind the cement board. Patching fiber cement siding.

Use only completely acrylic paint and apply with rollers. The cement basis of the product dictates the use of thin set mortar to properly repair cracks or holes.