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    What types of Roof Flashing you need to know


    What types of Roof Flashing you need to know

    Do you have a leaky roof? chances are your roof flashing was not properly installed which can ultimately bring into further damages to your home walls, weakening building materials, creating moisture and mold problems. At Quinns Construction we have worked on Roofs for over 40 years and we have experienced all kinds of poor jobs done with roof flashing. We wrote a helpful guide to knowing what to expect when roof flashing is being done.

    Flashing Materials. Flashing can be made up of several different materials, including metal, plastic, or composite materials. The most common and durable material homeowners choose is metal sheet flashing. For durability and weather adaptation Copper is the most popular choice for residents. Plastic is less expensive compared to the others, however, it will gradually be worn down due to exposed sunlight.

    DormerDormer. Metal flashing is usually the choice to install for dormer windows. Flashing can be installed as multiple squares of pieces that are added in between every row of shingles (or whatever type of roofing material is being used)






    Skylight. A Skylight is a window installed in a roofing or ceiling which creates an extra light to the room. Skylights are raised using a wood curb, allowing room for flashing material. The National Roofing Contractors Association recommends that this is an 8-inch vertical run. If a contractor is reroofing your house, it is important for them to inspect the Skylight flashing job as it may need to be removed and installed again.







    Vents. Hood and Pipe are two common types of roof vents you would usually see installed in your house. There are different ways to tackling flashing with these vents.

    Hood – When installing a new hood vent, it is important to cut a clean hole to minimize any extra work that will be needed to complete your project. Slide the flashing underneath the shingles and seal the joints. Don’t forget to cap on top of the vent once you are done.

    Pipe VentPipe Vent – When roofing around the pipe vent (also known as a pipe stack), you need to cut out the shape of the shingle to the way your pipe is shaped (shown right) when installing the row of shingles. Next, you will need to fit the shingle row around the bottom part of the pipe. Then, slide pipe flashing over the pipe so that it extends 4 inches below the pipe, 8 inches above the pipe, and 6 inches to the right and left. Once completed the bottom part of the flashing should overlap the shingle row.






    Chimney Flashing. The chimney is the main culprit when it comes to leaking and it is most of the time always installation from sheet metal flashings. Roofing contractors should always install a cricket or saddle which is a ridge structure that is designed to divert water from the back on the high side of the chimney.

    Roof flashing is important to prevent any water damage or leaking. We have seen a lot of poor services where previous roofing contractors replace metal flashing over the old flashing job that was done in the past. This does not prevent anything other than wasting your money. If you suspect a possible leak coming from the roof. Contact Quins Construction at 978 957-1200 today! We will make sure we walk you through every step of our process to ensure you are kept in the loop on what is being done to your roofs.

    Andy Maus
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