Waterproof Roof Flashing Where It Meets Timber Wall

The flashing extends onto the roof a minimum of 2 inches 4 inches is preferable in more severe climate areas.

Waterproof roof flashing where it meets timber wall.

The flashing extends up the wall at least 4. Flashing joints are lapped 6 in the direction of water flow. When the drifted snow melts water can find its way through butt joints knots cracks and other spaces in the siding. I use a wide piece of flexible flashing tape to protect the area between the subfascia and the wall.

Click to enlarge make sure the sheathing wrap overlaps all step flashings. Where a slope roof meets a sidewall slip the upper legs of the step flashing under the sheathing wrap see illustration. Flexible flashing tape seals the eave to the wall. Most simply use a nominal 6 piece of lumber.

The roof flashing is then placed up behind this through the wall z bar flashing on the outside of the vertical blocking backing material. The metal flashing is formed with a hook edge and cleated on 12 centers. If so it s difficult to say why your flashing is failing. Wind blown rain entering the roof cavity is a frequently the result of apron flashings not covering sufficient surface are or not adequately fitted around the corrugations or ribs on steel roofing.

Once the flexible flashing is set i apply a piece of housewrap along the wall where the fascia meets it. I cut the tape so that it laps onto the housewrap above and 3 in. Where a wall meets step flashing at the edge of the roof. I d suggest removing the lead use a nice line of clear silicon along the polycarbonate where it meets the brick let dry get some self adhesive flashing tape and install this from the channel in the brick work down over the polycarbonate.

Flashing is installed to surround roof features such as vents chimneys and skylights. Because most roof flashing is required to extend up the wall a minimum of 4 and some a minimum of 5. This could be where the roof meets a brick wall or a verandah abutting a timber wall. In this application the garage roof shingles are step flashed against the sidewall sheathing of the house.

Roof flashing is a thin material usually galvanized steel that professional roofers use to direct water away from critical areas of the roof wherever the roof plane meets a vertical surface like a wall or a dormer. Check out our recommended tools right here. In cold climates snow will drift and collect at the point where the garage roof joins the sidewall of the house.