Step 2 remove the shingles.
Tarring a roof valley.
This video shows the water proofing paper that we installed after re.
Stop nailing 6 inches from the center.
Roof one side of the valley running the shingles across it.
Iko recommends that you install architectural shingles with the open valley method for the best roof performance.
Check the entire roof valley carefully to locate the source of these problems.
Roof valleys are troughs that discard runoff water where two sections of sloped roof meet.
This recommendation includes iko s premium shingles.
Roofing tar is a good choice for a flat roof as this kind of material is highly resistant to the ultraviolet rays from the sun.
Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles.
Roof valleys are channels designed to drain runoff water and like any other part of your roof they can degrade over time with exposure to the elements.
Lay one and two tab shingles as you near the valley so full size shingles will run across the valley.
Valleys are typically found where gable dormer roofs meet the main roof or when a house has angled wings or additions where two roof sections in different planes meet.
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.
Pros and cons of roofing tar.
Though roof valleys are com mon leak sites on shingle roofs it s typically fairly easy to fix these problems with a little know how.
In other cases water can become trapped under shingles which have been overlaid to create the valley trough.
Roofing tar will also protect your roof from wind and from snow and water which can collect on a flat roof.
How to repair valleys on a roof.
The valleys on many older houses comprise layers of roofing paper which.
The three methods to shingle a roof valley.
Shingle the other side of the valley the same way.
A properly flashed roof valley should have an ice and water shield installed with roofing felt being properly secured over the ice and water.
How to install roofing paper in a valley section and install the valley flashing on top.
Roofing tar is often used for tar and gravel roofs or to fix leaks on a roof.
