How High Should Flashing Go Under Siding

8 inch minimum between siding and grade.

How high should flashing go under siding.

The recommended length of step flashing is typically a minimum of 2 inches longer than the exposure of the roofing material. 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. Alternatively use j channel nails for vinyl. A wall or siding needs special detailing to prevent leaks and damage where the wall encounters any horizontal surface such as a foundation wall top or a concrete porch slab.

And be capped on top with either a preformed metal drip cap or a custom flashing installed under the sheathing wrap. Drip edge metal valley flashing dormer chimney and kick out flashing shed water away from the connections between roofs walls chimneys and other building assemblies this collection of 18 articles animations and videos identifies the critical roof flashing areas illustrates durable roof flashing details and shows how to flash roofs. Manufacturers requirements can vary anywhere from 2 inches to 10 inches and you probably won t be able to see the sidewall flashing completely anyway. This results in a 2 inch minimum head lap.

Make sure that you remain cautious when you are on the roof. This article series provides details of foundation tops building walls exterior trim wall corners and roof wall intersection flashing to prevent leaks water damage. Nail the metal siding onto flashing by following siding manufacturer directions for material installation. Make sure that you leave a quarter of an inch gap between cement board or wood siding and step flashing.

And like other flashing metal coil comes in most popular siding and soffit colors for easy matching and a professionally finished look. The vertical flange of the flashing is to extend up behind the adjoining siding. It is a good idea to use a harness so that less hazard appears. The vertical side will be hidden behind the exterior wall covering material.

The water table should overlap the foundation by about 1 in. The roofing felt should be installed before you start tin. On a wall to be covered with wood cement board vinyl or metal. This is a design detail that must be worked out before the foundation is poured.

Cut a slit in the sheathing wrap along the entire length of the water table and slip the upper leg of the flashing under the wrap see illustration. It should go under the bottom two rows of siding then fold it out over the roof for at least 8 to 10 inches. In other words you will have to rip off the bottom rows of siding to install the.