How to Install Western Cedar Siding: Part 1 - Flashing Installation

Make sure to install the flashing

Prior to siding installation, you have to be sure that the flashings are already installed to avoid natural moisture from getting inside or entering the spaces in the walls and roofs.

Flashing is an important line of defense in controlling moisture in wall assemblies.

Flashing intercepts and directs the flow of water away from the building to designed drainage paths.

Install horizontal flashing extending from the top of all wall penetrations (such as all windows and doors) and at any material or material directional change (examples are band boards, water tables or the introduction of any alternative material).

The flashing should tilt downward to allow water to drain away from the wall.

Siding or trim should be ¼ inch above the flashing ledge.

Do not caulk where the flashing and trim or other materials meet.

Note that caulking in lieu of flashing is not acceptable.

Read How to Install Western Cedar Siding: Door and Windows Flashing Part 2