Ice dams can also occur on metal roofs and can cause damage. Metal roofs also require particular attention, especially the length of flat metal roofs. A related problem is that the roof is actually at greater risk of wind damage. Author has 1.3K answers and 308.1K answer views. Homes with sheds can have these problems, too. This is particularly true in geographical regions where high winds are a common issue. In a worst case scenario, all of the exterior damage from the rain and splashback will lead to premature siding rot. And you run the flashing up under the roof shingles and you make sure it extends past the roof shingles and lays into the top of the gutters. Prepare the gutter by scraping out as much old tar or caulk as possible. They also help to frame windows on upper stories. Knowledgeable roofers will install shingles at just the right overhang for your roof type. Looking right down the line of the guttering, the gap between the end of the last roof tile and the outer edge of the guttering varies from around an inch and half to, in some cases millimetres. Greater overhang becomes a point of leverage for gusts of wind to rip off your roofing. This is an archived question from the Answers forum. Home architects have a number of different options when they are looking to protect doors, entryways and windows: If the home only has one level, the standard roof design strategy is clear: make the main roof wide enough to protect all windows and doors. Finally, a large enough roof overhang is a great way to stay dry and provide enough room for opening up an umbrella when entering and exiting a home during inclement weather! It can be made of metal. Answered by LCD: I am assuming here this is a typical gutter - underslung off the fascia board under the lip of the roof, not one of the ones that is embedded into the roof surface at its edge, which do not protrude from the edge at all. A normal gutter will have about 1/2-3/4 of its … 3: The panels at the eave side of the roof should overhang into the gutters 1 to 1-1/2 inches. In our local area (Metro Jackson, MS) the typical overhang is about 12″. Water often follows around your shingle edge and can wind up flowing … This way any snow sliding off would clear the gutter and not damage it. You want to make sure that any water is landing far enough way from the foundation, as well as from the doors of the home. Without gutters, water cascading over the roof’s edge can wash down the side of your home, especially in a windy rain event. If you look at many buildings, you’ll immediately see them – they appear to be gently sloping “bulges” that surrounding protruding parts of the roof such as the chimney. My understanding is then a 1/16" per inch pitch is standard.. The peak of the roof is a long way from the base of the wall, so these overhangs are less effective, in general, than traditional eave overhangs in protecting the home. There is also one more problem to take into consideration: wind. There are two common problems encountered with roof overhangs: In the first case, the overhang is simply too big for the home. The goal is to balance the amount of solar heat gain and amount of shading. We recommend 50mm overhang into a standard gutter. In the Northern Hemisphere, north windows do not receive much sun, and are not a typical issue. You can add 3 ½ to 5 ½ inches to the top. If rainfall is constantly allowed to splash up against the siding of the home, this could lead to premature siding rot. In other cases, there are other architectural flourishes directly under the length of the eaves. Should look like this -. Are Rainhandler Gutter Systems a Good Investment? Terms of Use | 3: The panels at the eave side of the roof should overhang into the gutters 1 to 1-1/2 inches. America and Canada), the most important windows and doors to keep in mind for any roof strategy are the south windows. In a hot, sunny climate, you want to maximize the amount of shading; in a cold climate, you want to minimize the amount of shading. This Old House recommends that gutters should “slope (½ inch for every 10 feet) toward a downspout.” This keeps water moving away from your roof. For a typical home with 150 to 200 feet of gutters, you can expect to pay around $600 to $1,600 for installation. Include certain architectural features that make overhangs more than a short overhang or no overhang at.. A 1/4 to 3/8 inch overhang, we ’ ve cleaned the gutters 1 to 1-1/2.! 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