A better repair approach for the leaky dormer sides will as we ve discussed involve the following.
Roof to wall flashing leak.
Reinstall new wood shingles keeping the bottom of the shingle 1 2 above the roof surface below.
The roof side of the l flashing is connected to the roof material with hot tar or some other sealant.
In most cases roof and wall leaks are related to improper flashing.
When a roof leaks the problem is often due to leaks in and around the metal roof flashing that protects roof edges valleys and the junctions between roofing and obstructions such as chimneys dormers and vent pipes.
Must be kept up off the surface of the roof a minimum 1 some manufacturers of exterior wall coverings require.
Worn out flashing or missing sealant can also cause roof leaks around dormers.
Rotten or missing trim or siding can allow water to leak behind flashing and into your roof.
Some roof leaks are tough to locate.
Sorry to hear about your friends water leakage problems.
A roof leak at the edge of a dormer can allow a lot of water to enter your home.
Wall to roof connections on pitched roofs.
Roof to wall and deck to wall flashing www fema gov technical fact sheet no.
Of course if the flashing becomes corroded or damaged that s when it stops doing its job and you start seeing leaks.
Old holes left over from a satellite dish or antenna mounted on your roof can be a sneaky cause of leaks.
Roof to wall flashing.
That lip is then set into a reglet or groove in this case cut into the mortar joint of the brick wall above.
Look at the flashing in all transition points where roof meets a wall or another roof plane.
On pitched roofs wall to roof connections are.
Sometimes the water shows up at a ceiling spot distant from the leak.
To emphasize the importance of proper roof and deck flashing and to provide typical and enhanced flashing techniques for coastal homes.
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.
Dormer leaks can be caused from a number of issues.
Proper roof wall flashing example.
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.
Remove wood shingles with care up one or two courses sufficient to install proper sidewall flashing and counter flashing.
The most common areas for water leakage are basements roofs typically around chimneys skylights and other penetrations and wall penetrations such as windows and doors.
23 roof to wall and deck to wall flashing home builder s guide to coastal construction page 1 of 3 purpose.