Gambrel roofs are also called barn roofs due to where these roofs are most often seen. But the low sloping upper and steep sloping sides are a great way to add more storage space to the upper part of a garage. If you have or are considering a garage with a gambrel roof and need to choose roofing materials, there are a few things to keep in mind that are inherent to this roof style.
Weight of the Material and Potential Snow
Gambrel roofs have a large surface area across the upper, lower sloped region. Two beams support that larger surface area, which means that the roofing material needs to follow careful weight distribution, particularly if you live in an area with snowy winters. Note that gambrel roofs aren't recommended in areas that have a lot of heavy snowfall in winter as the roof can collapse.
If even light snow is a possibility, you want to go with a lightweight roofing material like asphalt or metal. Asphalt is one of the lightest weight roofing materials around without compromising durability. Metal offers better water and snow runoff assistance, which can also help lighten the load on top of the gambrel roof.
You should avoid heavy roofing materials like clay tile or slate when roofing a gambrel. The supports simply aren't strong enough to hold up those materials without the risk of collapse.
Gambrel roofs aren't recommended for areas with frequent high, strong winds since the wind can also put too much weight on the top of the structure. But if your garage does undergo windier conditions, you will need to watch out for roofing material damage from when the wind goes up the steeper lower segments of the gambrel. Asphalt in particular is prone to wind damage.
Metal is fine under wind exposure. You could also go with wood shingles, which do weigh more but also have an overlapping design that can help buffer some of that wind. Wood is also decent at helping get the moisture off the top of the roof.
Presence of Windows
Does the upper area of your garage have windows that jut out from the roofing material? The edges where the window frames meet the roofing material are tougher to waterproof if you use a material that isn't malleable or easy to cut to fit around the sharp corners or tight fits.
Metal roofing is one of the best choices in terms of waterproofing tricky locations. If you don't like the look of all-over metal, you can also ask your roofing contractor to use metal flashing, which is a type of metal roofing that is placed only where waterproofing is needed. Your main roofing material is then installed over the flashing.Share
5 April 2016
When I married my husband 10 years ago, I agreed to move into the ranch home he already owned. Initially, we planned to live in this house for five years and then after a few years of marriage we wanted to buy our dream home. After our wedding, many things in our lives changed. We both got different jobs. And we decided to transform the house my husband owned when we married into our forever home. To accomplish this task, we have begun a major renovation project. The first job on our list was a new roof. On this blog, I hope you will discover the best types of roofs to install on a brick home.