Typical roof overhang


Any building needs to have overhangs as part of its construction. Whether the roof is flat, cantilevered or part of a new type of design, a roof with an overhang plays a vital role in distributing the water runoff as well as protecting a home as a whole.

An overhang has a number of different purposes when it comes to protecting the exterior of the home. Not only does it draw moisture away from the windows and doors but it can change the way that the home responds to heat and cooling. A proper roof with an overhang design can keep pace and strike as well as ensure that a home doesn't overheat in a summer.

Without taking proper consideration when framing a metal roof overhang it is possible that the siding of a building will begin to rot or a number of problems with the windows and doors can occur. The common issues that are faced by roofs that have an overhang is that quite often they can be too small or perhaps even too wide.

There are traditionally two different types of roofs with overhangs available for carpentry projects: the wider eve hang structure and the smaller rake overhang. Problems seem to occur more often in rake style overhangs that are left too small.


The size of flat roofs that hang over will typically protect the side of a home from being exposed to the elements and lots of water damage Without this flat roof feature it can be difficult for a 2 to 3 story home to keep dry and free of mold and other concerns. Overhangs are usually designed to protect one and two-story homes, but if a home is a little bit larger a builder can include brow roofs to handle the process of overhang functions later on.

Walls that don’t have a proper framing for an extending protective overhang can see considerable problems with flooding and damage. A roof solid overhang can also work to prevent the walls from constantly taking wind damage.


Standard siding can wear out much more quickly when a metal roof is no longer able to protect the home. Roof overhangs are needed. If siding starts to slide off and leaves a house’s frame unprotected it can often lead to problems like leaks and full siding failures.


Metal Windows and doors can be a weak point in a home especially when they aren't well protected by a flat roof. In older buildings you might even see casings or secondary coverings over a window or a door, and this offers another level of protection to make sure that water can't enter this area. Gable roof designs may also require extra features to offer protection to openings, windows and doors. A gable roof is a popular style and is used often. These types of ledges or features will help to project rain outward just like the roof does.

An unprotected door or window could be subject to rot and this can really detract from the exterior look of a home as well as cause drafts. Rather than suffer inefficiencies, make sure that your entranceways and windows are properly protected by your overhang length.


It doesn’t take long for a poor design in your overhang to lead to rain quickly washing away your foundation. With preparation it's possible for you to keep your basement dry and prevent serious damage to your foundation. Splashback and other issues can cause shading on your foundation, siding and windows.

There are various strategies for completing a quality slope and overhang on a roof. Always make sure that you trust a qualified expert to design your roof and perform repairs on your roof.