How To Use Flashing To Protect Wood Siding

Tinting a standard white primer a shade or two lighter than the finish coat improves coverage. 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.

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When it comes to flashing siding corners many builders simply use a 1x wood corner.

How to use flashing to protect wood siding. Building siding flashing finish details for building corners. There are many different metal flashing shapes but in your case the metal laps over the fascia board perhaps 1 4 inch then is bent at a 90 degree angle to pass over the top of the fascia board then bent again at a 90 degree angle to go up the wall so that it extends behind the first row of vinyl siding. 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. Nail it to the sidewall or glue it if nailing isn t possible.

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. The best solution is a preformed or custom bent kick out flashing to divert the water away from the siding. Here are four ways to use metal flashing to prolong the life of siding. Otherwise dripping water will leave its mark along the siding.

Prime all bare spots with a high grade oil based primer. In certain instances flashing may need to be installed on the exterior of siding. Cover with cap flashing. Many times builders fail to use proper flashing at the top of windows.

Then caulk all joints with a high grade 50 year paintable silicone or polyurethane product to prevent water from getting behind the 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. 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 overlapping 1x4s or 1x6s at outside corners or use 5 4 stock for a heavier look.

Inside corner w flashing. Where the step flashing terminates along a sidewall is a common trouble spot for moisture problems. Lift the bottom shingle and slip in the kickout flashing. However in most instances step flashing should be installed behind siding.

Caulk any joint that allows this to happen. It is always recommended to install step flashing behind stucco dryvit wood panel lap siding vinyl siding cedar shingle siding etc.