The right thing to do here is to pull a valley basically pull a valley apart and rebuild it.
How to repair roof valley leak.
This video shows the traditional and best way to repair a lead valley on a roof.
Then installed a layer of gaf storm guard underlayment and 20 valley flashing.
Start at the upper row of shingles at the upper end of the valley.
Step 2 remove the shingles.
Many roof valley leaks are caused by roofing nails that have been poorly.
A properly flashed roof valley should have an ice and water shield installed with roofing felt being properly secured over the ice and water.
And you can tar it but it s a real stop gap band aid like measure.
We removed all old roofing material down to the original wood deck.
Step 1 find the cause.
The best way to find and stop the roof leak is to start over and roof the valley the right way.
Take measurements of your roof flashing most flashing is 14 inches wide but yours may vary.
Step 3 lay the flashing.
And if they put a second layer of shingles on they brought it up the valley but they didn t replace the valley it s probably leaking and cracking and split.
Insert the bar under a shingle and pry upward at a.
Follow these three preparatory steps to get ready to fix the valley leak.
Find the place where that leak is coming from.
This method of lead valley repair is proven to not only be fast and safe wit.
Remove 8 inches of shingles at each side of the valley with a 16 inch nail bar.
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.
How to repair a lead valley.
And that s what we ve done here montgomery s old cloverdale neighborhood.