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