It is wise to choose flashing components that will have the same degree of longevity as the rest of your roof.
Repair roof valley flashing.
Then reshingle sliding metal step flashing behind the fascia board the trim behind the gutter.
Toronto s roof repair specialists http www mrroofrepair ca show the cause of a major interior roof leak.
Repair work should never be an ongoing problem that needs babysitting.
But a good roofer can sort of almost disassemble the shingles and take it apart at the valley and then rebuild that one piece of it.
Traditional roofing is quite simple.
In order to lay the flashing the shingles on the roof will have to be removed.
Corroded spots and small holes in roof flashing can be easily repaired.
You may want to carefully measure the flashing and only lift up as many shingles as you need to get that into the roof or you may want to lift up a number near to the valley in order to ensure that the roof is fully protected in the future.
If leaks continue to occur from ice dams consider installing roof edge heating cables.
First roughen the area around the hole with a wire brush or sandpaper and then clean it.
Cut bottom of flashing so the entire width of the valley flashing extends approximately 1 2 to 3 4 over the fascia trim board along eaves the following photos illustrate removal and replacement of a closed cut valley with new open metal valley.
Or perhaps you may be able to work some copper flashing under that on both sides without taking the whole thing apart.
Extend entire width of flashing completely to the bottom of the roof valley.
Plug pinholes with roofing cement and patch holes up to about 3 4 inch in diameter with a patch from the same material as the flashing.
Small holes or corroded spots in flashing can be easily repaired.
A properly flashed roof valley should have an ice and water shield installed with roofing felt being properly secured over the ice and water.
Repairing a roof valley involves removing some shingles and installing a.
In other cases shingles are overlapped to make a valley and water from harsh rains can find a way under the shingles.
The valley flashing laid over the joint where the two roofs meet should overlap the step flashing at least 2 in.
Your roofer may simply cork pinholes using roofing cement and effectively patch holes using a patch cut out from the same material the flashing is made of.
If the ice and water shield is missing then you will have to remove the shingles on both sides along the valley put ice and water shield in place and re shingle the roof.
Use the best materials and overlap them in such a way that they shed water.
