You have to make the cuts very slowly.
Cut cement board siding.
For the contractor who measures siding jobs by the square mile not the square foot i think the.
Cutting fiber cement siding siding shears.
With the cement board flat use a ruler to guide your pencil as you mark a line where you want to cut the board.
You may need to trace over the line a few times to leave a mark that you can see well.
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Make sure the line is straight and visible.
Like the score and snap method set a straightedge across your sheet.
Just sharing some of the different methods i ve used for cutting hardieboard siding.
Draw a line with a carpenter s pencil where you want to cut the board.
To keep dust to a minimum use a circular saw that s equipped with either a dust collection bag or electric fan that.
Typically siding shears use air.
Mark where you d like to cut the board.
Use your eyeware and ear protection.
These are specialized to reduce the dust caused from cutting these planks.
Cutting fiber cement siding stationary shears.
This old house general contractor tom silva shares his secrets for working with fiber cement siding.
You can use diamond cutting blades attached to your circular saw or sliding miter saw.
Lay your cement board out on a work table or between two saw horses.
When cutting fiber cement siding with circular saw use a blade that has only four or six teeth.
Makita and hitachi.
Cut a straight 1 2 so its length runs from the frieze board to the bottom of the first siding course.
For a slow but virtually dustless way to cut siding use power.
This is probably the most popular method for cutting fiber cement siding.
Remember this mark represents the top of the siding piece not the bottom of the second course.
Use a specialized blade used with the saw such as mikita hardiblade or dewalts filber cement blade.
Measure up from the bottom of the story pole to mark the full width of the first course of siding.