Cedar Siding Corner Flashing

Thickness of the corner board will depend on the thickness of the siding.

Cedar siding corner flashing.

These pieces are used to protect the wood that is exposed after lap siding has been installed. This aluminum corner is for hardboard siding measuring up to 1 2 thick. The base of this outside siding corner is 1 11 16 wide from center to outside edge. Cedar shingle siding must never rest on the horizontal surface of flashing.

Face width 1 3 4 per side at the bottom tapering to 1 1 4 at the top. Flashing must be overlapped by the moisture barrier. Outside aluminum siding corners in different sizes. Siding corner is primed white and has a wood grain surface.

Use overlapping 1x4s or 1x6s at outside corners or use 5 4 stock for a heavier look. Edge strip for corners. The most common are 3 4 inch or 1 1 4 inches thick. Width is a matter of taste and proper proportion.

Use a felt paper spline wrapped around the corner and extending 6 inches beyond the corner board to protect the joints where the siding meets the corner boards see figure 1 5 at left. Building siding flashing finish details for building corners. These siding corners provide both stability and protection while giving a seamless look to hardboard siding. Otherwise it is possible for water to wick up the shingles and into the wall.

122 series corners are designed primarily for wood siding. Flashing should be made from a non corrosive material and should extend a minimum of 2 vertically up the wall.