Installing Fiber Cement Siding Over Wood Siding

Putting up trim before installing fiber cement siding.

Installing fiber cement siding over wood siding.

These can be made from wood vinyl or thicker fiber cement products such as hardietrim. Begin by installing the inside and outside corners on the wall. 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. If the cement siding is to be installed over wood sheathing 7 16 osb or plywood at a minimum it is recommended to use a 6d nail.

Nail strips of wood lath where the lowest siding course will hang. Corners should be at least thicker than two stacked pieces of siding to allow room for caulking. Adding another layer onto the original siding might cover up existing issues some of which can be serious like previous water infiltration or foundation problems. Remember that the siding is hard so be sure the nails are located at the right place before driving them.

When you want the classic look of wood siding coupled with lifetime durability fiberboard cement siding may well be your best choice. 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. Installing fiberboard cement siding fiberboard cement siding looks identical to wood once it s painted.