Installing Fiber Cement Siding Over Wood Siding

Nail strips of wood lath where the lowest siding course will hang.

Installing fiber cement siding over wood siding.

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. 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. Remember that the siding is hard so be sure the nails are located at the right place before driving them. Fiberglass cement siding is a composite made of portland cement silica and wood fiber.

Installing fiberboard cement siding fiberboard cement siding looks identical to wood once it s painted. Nails used to hang fiber cement siding shall penetrate at least 1 into the studs or the structural framing. Putting up trim before installing fiber cement siding. 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. These can be made from wood vinyl or thicker fiber cement products such as hardietrim. 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.