How To Use Flashing To Protect Wood Siding

Caulk any joint that allows this to happen.

How to use flashing to protect wood siding.

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. However in most instances step flashing should be installed behind siding. Many times builders fail to use proper flashing at the top of windows. Here are four ways to use metal flashing to prolong the life of siding.

Otherwise dripping water will leave its mark along the siding. Nail it to the sidewall or glue it if nailing isn t possible. Inside corner w flashing. Cover with cap flashing.

Then caulk all joints with a high grade 50 year paintable silicone or polyurethane product to prevent water from getting behind the siding. Flush the end of the flashing length with the wall corner and secure the flashing to the framing with an 8d nail at each wall stud. Slip in the flashing. The best solution is a preformed or custom bent kick out flashing to divert the water away from the siding.

Where the step flashing terminates along a sidewall is a common trouble spot for moisture problems. In certain instances flashing may need to be installed on the exterior of siding. Use overlapping 1x4s or 1x6s at outside corners or use 5 4 stock for a heavier look. Tinting a standard white primer a shade or two lighter than the finish coat improves coverage.

Begin at either end of the wall and set the level middle section of the z flashing onto the top edge of the siding panel with the wider flange upward and against the wall framing. 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. Prime all bare spots with a high grade oil based primer. When it comes to flashing siding corners many builders simply use a 1x wood corner.

Building siding flashing finish details for building corners. It is always recommended to install step flashing behind stucco dryvit wood panel lap siding vinyl siding cedar shingle siding etc.