Roof To Wall Siding Flashing

The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak.

Roof to wall siding flashing. On a wall to be covered with wood cement board vinyl or metal siding the step flashing and associated roofing must be installed first so the siding can cover the top of the step flashing on. Likewise a 10 wide flashing will result in a 5 inch wide roof deck flange and a 5 inch vertical flange. I made this video this morning and i hope it help explain the flashing wall detail where the siding meets the roof. Here is an attempt though maybe not a very good one to make the roof flashing serve also as a through the wall flashing with a tile roof.

The exterior of a house presents plenty of opportunity for leaks. Technical fact sheet no. To install the roof wall flashing above the builder bent the top edge of the flashing into a 90 degree lip about 2 cm in width. Must be kept up off the surface of the roof a minimum 1 some manufacturers of exterior wall coverings require.

Proper roof wall flashing example. A 5 inch wide flashing will result in a 2 1 2 roof deck flange and 2 1 2 vertical wall flange. Deck joist ledger spacer behind ledger housewrap or building paper housewrap or building paper exterior sheathing flashing drip edge z flashing 2 z flashing 1 deck board siding gap. There have always been problems with the flashing details at head walls rake walls and chimneys especially if stucco brick or stone veneer is used.

23 roof to wall and deck to wall flashing home builder s guide to coastal construction page 3 of 3 figure 3 deck ledger flashing. The flat roofing material must go up the wall a minimum of 12 or up the wall and over the top of the wall if the wall is less than 12 high. While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately. All exterior wall coverings whether it is wood siding vinyl siding brick or stone veneer stucco etc.

Unless you re careful step flashing can allow water from the roof to slip behind the gutter and get behind the siding and even the housewrap. A key part of my approach is using a special piece of flashing at this. Obviously the further up the wall a flashing extends the greater the resistance to water intrusion. A common problem area is the point where a gutter dies into an adjoining wall as the photo below illustrates.

Roof to wall flashing. If siding on the house wall abuts the porch roof joint the lowest strip should be removed to install the flashing underneath.