Installing Fiber Cement Siding Over Wood Siding

Fiberglass cement siding is a composite made of portland cement silica and wood fiber.

Installing fiber cement siding over wood siding.

Nail strips of wood lath where the lowest siding course will hang. 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. Begin by installing the inside and outside corners on the wall.

These can be made from wood vinyl or thicker fiber cement products such as hardietrim. 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. 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. When you want the classic look of wood siding coupled with lifetime durability fiberboard cement siding may well be your best choice.

Some fiber cement panels act as a rain screen system so when retrofitting fiber cement onto wood or any other material the substrate should be in great shape prior to installation. Installing fiberboard cement siding fiberboard cement siding looks identical to wood once it s painted. 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.