Damaged missing or worn out flashing is a common cause of a roof leak on an external overhang.
Roof leaking at side edge.
Nail the drip edge to the roof sheathing at roughly 18 24 spacing intervals using roofing nails.
Don t go crazy with the water.
1 backed up gutters the photos below show a roof edge that has suffered from long term backup of the gutters.
Flap to bend around the front of the dormer.
Worn out flashing or missing sealant can also cause roof leaks around dormers.
Beyond the dormer and cut the top section along the dormer edge.
Notch the first step flashing leaving a 1 in.
The sagging first row of shingles is a clear sign of a problem below.
Other materials such as slate concrete tile or clay tile may not be so forgiving.
It should overlap another piece of ice and water barrier laid below all the way down to the roof edge.
Run the water over the place where you think the leak might be located.
This should cover the most leak prone areas.
Looking for roof leaks on the outside of your house.
If you don t want to wait for rain to look for the leak try bringing the garden hose up on the roof.
You can crack roofing if you walk on it so be careful.
Make sure you keep the roof clear so water will spill over it fast.
If your roof is older it is possible that the leak is within the roof field.
Depending on how the roofs join you may have to cut a slot to work it in far enough.
Dig out any cracked or dry caulking that isn t properly sealing adjoining surfaces and replace with silicone caulk.
Dormer leaks can be caused from a number of issues.
Be sure to start small.
Replace any missing or rotted siding above the step flashing on dormers.
Once water has infiltrated into the flashing it can soak into the trusses and other roofing.
Then reshingle sliding metal step flashing behind the fascia board the trim behind the gutter.
Nail along its upper edge.
Add shingles and additional step.
The water can seep into the roof.
Roof sheathing rotted all the way through below.
Here s a few reasons why roofs leak at the edge.
Bend the flap down and nail along the top edge.
If your roof is asphalt then you can walk around with ease.
This means the expanse of shingles slate shakes whatever.
Debris like leaves pine needles or twigs can trap water against the roof.
When pulled back at the edge it was ugly.
Run the base flashing 4 to 5 in.
Rotten or missing trim or siding can allow water to leak behind flashing and into your roof.
Points to the installation of ice and water shield along the lower roof eaves protecting against ice dam leaks that are common on un vented roofs in cold weather or snow climates.