Roofing A Valley With Asphalt Shingles

roof valley that has ashphalt shingles installed

Asphalt shingles, just like any roofing materials out there, are still vulnerable to the elements of nature and can still deteriorate if not taken care of properly.  One of the best ways of preserving the quality and the longevity of asphalt shingles is by installing a valley.  Asphalt shingles are known for being able to resist rainwater, snow, and other elements of nature, it’s still vulnerable to constant flowing water and this is where valleys come into the picture. 

But before we get into detail on how to install valleys for a roof and what are the advantages that it entails, it’s best to first look into are what are the different ways of installing valley shingles and the advantages of these installations.

Installing Shingles for Roof Valley

  1. Ensure that there are ice and water protection sheets before installing the valley. Beginning at the valley base, the flashing should be centered.
  2. It is important that the flashing is nailed down with care. Nail the edges with only the amount needed to keep it in place. Having extra nails can inadvertently cause leaks. 
  3. While moving up the valley, install additional flashings and then overlap each piece of flashing by 6 inches.
  4. Draw out chalk lines as you mark shingles along the valley. The chalk lines drawn at the peak valley should be 8 inches long and begin to slope outward slowly at the last quarter-inch mark.
  5. Begin to install your shingles in both faces of the roof.
  6. Nail down each shingle at least two inches back from the chalk line. 
  7. Finally, finish installing the shingles by embedding the shingles with composite plastic cement. 

Factors and Steps in Roofing a Valley 

As the name suggests, a roof valley is formed on a roof when two slopes meet. Usually, this is designed to collect rainwater before redirecting it to the roof’s gutter and downspout system as it is being disposed to the proper drainage system. Even though having a roof valley can lengthen the lifespan of your roof and your home’s foundations, it can still pose a problem if it is improperly installed. To avoid any future damages from having an improperly placed valley, it’s best to hire a licensed roofing professional that can make sure your roof is in top condition. 

However, installing a valley for your roof is not an easy task, and although it might seem like just a small part of your roof, it can land you some long-term benefits if planned out and installed correctly. 

Be Careful With Multiple Layers of Shingles

Sure, you might be able to save money from installing a new roof over an old one, but this will inadvertently lead to some damages in the long-term. Aside from affecting the monetary value of your home, it will also conceal damages from organic growths and impacts which will then affect the new layer of roofing. It’s best to keep this in mind if you want to make sure that your valleys are in pristine condition. Again, if you do have multiple layers, always consult the professional supervision of a roofing specialist. 

Consider High Winds

If you’re living in an area that commonly has high winds, it’s highly recommended that you install some reinforced nailing strip area. These straps are able to withstand winds of up to 110 miles per hour. As a general rule-of-thumb for most roofers, it’s best to use 4 No. 9 1 ½ hex head screws which can tighten the hold of your shingles against strong winds. 

Most contractors would suggest using an open valley method to optimize the performance of your roofing Effingham IL. If you’re looking to get the best performance from your roof, it is important to ensure that the structure is installed properly. A licensed roofing contractor will be able to ensure this.

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Matt Kowalis

Marketing Manager for Central Roofing LLC

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Central Roofing is a top quality roofing company in Sullivan, IL that likewise operates in Mattoon and Champaign, and the rest of Illinois. We offer a wide array of roofing services to property owners like you. We have been the leading go-to roofing company of homeowners, business owners, and property managers for almost a decade now here in Illinois.

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