Mix a solution of 1 2 cup trisodium phosphate and 1 gallon of water.
Patching holes fiber cement siding.
Using a stiff brush mix the patch material specifically intended for fiber cement following the manufacturer s directions carefully.
The hole size diameter is that of a cable line.
08 09 2009 07 08 pm 5.
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.
A cable line was run through the siding when the previous home owners lived there but the cable line is no longer there.
Refer to manufacturer recommendations for products that are compatible with fiber cement.
However i have not found a product specifically made for patching fiber cement siding.
If not get out the prybar and sawzall.
These areas include but not limited to penetrations flashings plank and trim connections and in some cases between plank joints.
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.
The siding may look like wood it may have a wood grain effect but it is primarily cement and requires a cement patch.
Refer to manufacturer recommendations for products that are compatible with fiber cement.
If you have some small cracks and holes in your siding you can fill them in with patching material specifically designed for this purpose available at your local hardware store.
In your case you can use a diamond saw on a 4 1 2 grinder cut a nice square or whatever shape you desire out around the offending area cut a block to fit it a piece of azek board is a decent choice drill a hole just over the size of gas pipe then slice the block in half through the hole then slip the two halves into your siding cut out and around the pipe.
Why would you need a sawzall removing a cement plank.
Rinse the siding with clean water to remove the soapy residue.
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.
I really do not want to replace the board.
The area to be patched must be clean and solid around the edges.
Though it is a tough wearing product the surface of the siding can sometimes be damaged during installation by unusual wear or by impact.
The james hardie company makers of hardieplank recommends the use of a cement patch product made of an acrylic mortar compound for patching their siding products.
Anybody have any success with patching holes in fiber cement siding.
Use only as much water as the manufacturer recommends.
Dip a soft bristle brush into the solution then scrub the cracked area of fiber cement siding to remove dirt and debris.
First clean the area thoroughly with a damp cloth and remove any hanging particles.
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.