Flashing Base Behind Siding

Cover with cap flashing.

Flashing base behind siding.

But unlike fiber cement siding wood is almost sure to rot. In areas where snow may build up add a wide band of peel and stick membrane over the step flashing but under the sheathing wrap as shown. Stucco cladding install self adhesive flashing behind the weep screed a perforated metal strip at the base of the exterior walls at the height above grade specified by the local building code. Lift the bottom shingle and slip in the kickout flashing.

Building siding flashing finish details for building corners use overlapping 1x4s or 1x6s at outside corners or use 5 4 stock for a heavier look. When it comes to flashing siding corners many builders simply use a 1x wood corner. Make the outline large enough to include space for the deck boards on top the ledger and any trim boards on the sides. Install the lathe and stucco to the first bend in the weep screed.

Otherwise dripping water will leave its mark along the siding. Snap a chalk line cut out the siding and tack up the ledger board. Start by making an outline on the siding where you want to position the ledger board. If the kick out and step flashing can t tuck behind the siding screw on cap flashing to cover it then caulk along the top.

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. Install the flashing before you finish the top of the brick wall as the flashing must go behind the siding as well as behind and under the top row of bricks that angle outward to cover the top. Where the step flashing terminates along a sidewall is a common trouble spot for moisture problems. Then slip flashing behind the siding covering the top edge of the ledger.

The best solution is a preformed or custom bent kick out flashing to divert the water away from the siding. Slip in the flashing. On a wall to be covered with wood cement board vinyl or metal. Flashing is a strip of metal usually aluminum about 8 inches long and bent at 90 degrees with each side at least 5 inches wide.

And when those corners start to decay they become. Flashing over the siding or trying to shove flashing up under that bottom course leaves a risk of water entry at the building wall sill.