When the contractor delivered the sad news that my roof needed replacing, that led to a discussion of material choices. I was surprised to hear that metal roofing was an option. Sure, it was fine for commercial buildings, but a home? My contractor told me that metal is used for homes more than people realize. The panels can be designed to look like just about any type of roofing you can imagine. After looking at some samples and finding out about the long life of metal roofs, I decided to give it a try. Fifteen years later, my roof is still in great shape. If you are facing a roof replacement in the near future, let me tell you more about metal roofing. I'm betting that you'll decide this solution is right for your home.
If you have an old roof, chances are that you may experience some leaking in the roof valley. The reason this area is prone to leaks is that water usually flows through the valley to get to the gutters, often seeping through any cracks. Ice and snow could also accumulate in the valley, causing some leaking. Read on to learn what could contribute to the failure of your roof valley and how you may be able to fix the problems so as to maintain a watertight roof.
Aging shingles and old repairs
Shingles on an old or poorly maintained roof valley can slowly dry out due to exposure to wind and sunlight, causing them to shrink and create fissures that allow water to seep into your roof. Eventually, badly damaged shingles may actually be blown away by high winds, leaving underlying roof structure exposed to water damage and leaks. Scheduling regular roof maintenance can help catch broken or missing roof shingles so they can be replaced.
An old roof valley may also be prone to serious leaks due to old repairs. Old sealant and flashing may deteriorate over time, creating spaces for water to seep into the shingles. Your roofer can apply new roof cement or sealant and replace cracked flashing to seal the source of the leaks.
Roof valley debris and improperly placed nails
Another probable cause of roof valley leaks is accumulated roof debris. The valley can trap leaves, dirt, twigs and snow, eventually obstructing the smooth flow of water down the roof. This can in turn cause water to accumulate inside the valley and seep through the shingles. Removing debris from the valley and gutters regularly will allow for water to drain down the roof quickly, increasing the lifespan of your shingles and flashing.
Roofing nails that are located within the seam areas of the roof valley can also cause leaks, as they tend to draw moisture through the shingles. Have your roofer inspect the nailing and ensure they are placed a few inches from the seam to prevent leaking.
Missing ice and water shield
It is crucial that your roof valley have an ice and water shield installed beneath the shingles for a watertight seal. You can climb up the roof and lift the shingles on the roof valley to see if the ice and water shield is installed or inspect the roof from your attic through the spaces in the boards. If the shield is missing, have a roofer like Darnell Construction place it and re-shingle the roof valley.Share