Attach a horizontal strip of wood lath that s 0 25 in 0 64 cm thick and 1 25 in 3 2 cm wide directly above the chalk line.
How to install fiber cement siding over old siding.
Do not overdrive the nails.
There are two options for this.
Measure up 0 25 in 0 64 cm from where you want the bottom of the fiber cement siding to be then snap a level horizontal chalk line.
Find your most beat up pieces of siding and rip them down into 1 1 4 in.
Remove the siding and install oriented strand board commonly referred to as osb or to use the existing siding that s on the house now as substrate or layer beneath the top surface underneath the hardieplank siding.
Snap a line 1 in.
Install these fragile starter strips with a 15 gauge trim gun.
These strips installed at the bottom will make your first row of siding angle out to match the rest of the rows.
Above the bottom of the wall sheathing as a guide.
Apply a vertical bead of caulk at each end of the wall.
Position your first course of siding inch below the starter strip and nail the siding into the studs 1 inch down from the top of the siding.
Cut a length of fiber cement clapboard siding inch shorter than the width of the front wall.
Score the cut line with a utility knife and snap the siding in two.