If the leaking appears to be caused by ice buildup on the edges of the roof this likely will need to be handled by a professional ice removal crew.
Roof leaking on outer eadge.
The source of the roof leak on the outside of the home rarely matches where the leak appears on the inside of the home.
The water begins to back up under flashings shingles tar paper etc.
Metal drip edge flashing is an important element of any roofing edge.
Recaulk the corner flashing if any areas have hardened caulk.
Ice dam leaks plague people in the snow belt.
A common cause for leakage is poor workmanship on your roof.
Depending on how the roofs join you may have to cut a slot to work it in far enough.
This leads to a good deal of frustration for the homeowner who is attempting to repair it.
Ice dams are generally fixed by a crew that uses steam to melt away the ice buildup allowing melting snow to drain off the roof rather than back up under shingles.
Roof flashing roof vents or roof membranes can leak from poor installation.
Ice dams block the natural flow of water down a roof.
Replace any missing or rotted siding above the step flashing on dormers.
There should be a starter strip which is most often simply shingles installed up side down that where installed so the seams do not line up with the seams in the shingles.
This should cover the most leak prone areas.
Then reshingle sliding metal step flashing behind the fascia board the trim behind the gutter.
A roof leak at the edge of a dormer can allow a lot of water to enter your home.
Rotten or missing trim or siding can allow water to leak behind flashing and into your roof.
It bends around the edge of the roof channeling any moisture that penetrates the shingles away from the roof decking.
It should overlap another piece of ice and water barrier laid below all the way down to the roof edge.
Dormer leaks can be caused from a number of issues.
Depending on how the roofs join you may have to cut a slot to work it in far enough.
It should overlap another piece of ice and water barrier laid below all the way down to the roof edge.
Dig out any cracked or dry caulking that isn t properly sealing adjoining surfaces and replace with silicone caulk.
Then reshingle sliding metal step flashing behind the fascia board the trim behind the gutter.
This should cover the most leak prone areas.
Sometimes determining the source of the roof leak can be an even greater challenge.
If an inexperienced contractor didn t install the materials well leaks could occur.
Worn out flashing or missing sealant can also cause roof leaks around dormers.