When deciding how to shingle a roof valley you will need to consider your materials the climate and the desired look of the roof.
Tarring a roof valley.
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.
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.
Check the entire roof valley carefully to locate the source of these problems.
Roof one side of the valley running the shingles across it.
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.
Shingle the other side of the valley the same way.
Iko recommends that you install architectural shingles with the open valley method for the best roof performance.
Pros and cons of roofing tar.
Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles.
This recommendation includes iko s premium shingles.
This video shows the water proofing paper that we installed after re.
How to repair valleys on a roof.
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.
How to install roofing paper in a valley section and install the valley flashing on top.
Lay one and two tab shingles as you near the valley so full size shingles will run across the valley.
The valleys on many older houses comprise layers of roofing paper which.
A properly flashed roof valley should have an ice and water shield installed with roofing felt being properly secured over the ice and water.
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.
The roofing nails are fine so long as the lead of the roof valley is intact but once it starts to crack or fracture due to water pressure corrosion or other damage the nail provides a space for water to run into the home.
The three methods to shingle a roof valley.
Roof valleys are troughs that discard runoff water where two sections of sloped roof meet.
Step 2 remove the shingles.
Roofing tar will also protect your roof from wind and from snow and water which can collect on a flat roof.
Stop nailing 6 inches from the center.
