Serving Wichita and the
surrounding areas since 1994.

Notes from a Remodeling & General Contractor for the Wichita, KS Area

Open vs. Closed Valley Flashing for Kansas Homes – Roofing Options (part 2 of 4)

Last month we started our four part series about roofing options with the various types of shingles. This month we continue with the options you have to choose from for roof valleys. While we will focus on what we use for those in the Wichita Kansas metro area, the information should apply to most of the home in the Midwest too.

What is a Roof Valley? What does it Do?

The valley area of a roof is an area where two parts of a roof meet at an angle or where a “v” is formed. It is an important area when it comes to weatherproofing a roof. A roof valley is where a great deal of runoff water can be concentrated during a storm. An improperly laid roof valley can easily become vulnerable to developing leaks so it is important that they be done right.

There are two predominate methods of flashing a valley area on a roof in order to protect it on a shingle roof: “open valley” and “closed valley”. The choice between the two is partially aesthetics but it can impact cost and functionality, which your roofing installer can help you determine. Below are real-world examples of open and closed valley installations that we have used in our Kansas roofing area (Wichita, KS and the surrounding area including Hutchinson, Newton, McPherson, and Derby):

Open Valley Installation

In an open valley installation, an extra valley lining is installed and left exposed after shingles are installed giving it a more open surface.

Open valley shingle constructionRoof line - open valleySide view of open valley roofing

Closed Valley Installation

In closed valley roofing, shingles are installed over the valley areas so that it covers (closes) the area and creates its own valley lining. Also roll roofing or ice and water shield is required by code in this configuration in order to offer additional protection.

Roofing shingles installed in closed valleyCloseup of closed valley roofing shinglesClosed valley roofing

Need More Information? Contact a Trusted Local Roofer in the Wichita, KS area

Our approach to roofs is that you are purchasing a roof system that is a valuable investment in your home. You should find a professional roofer that will spend the time help you learn and explore the differences in roof system components and the essentials of a quality roof installation. The goal is to balance your wants and needs with the appropriate application while considering your budget.

We hope the above helped you better understand the differences between open and closed valley flashings used in the Wichita, KS Metro area. If you are in the area and in need of a new roof or just more information, please consider S&A Construction of Wichita KS. Give us a call or e-mail any time.

Next month, we will continue with roofing ventilation options but in the meantime, let us know if you have any questions, other ideas, or comments about roofing!