Roof Eaves Design

I recently built a small outbuilding with a 6 in 12 pitch roof that offers a perfect example for showing the process i use to build eaves and rakes. Before manufactured trusses the simplest roof construction involved extending exposed rafter tails beyond the walls of the house. Another is to create a custom gravel stop drip edge flashing piece that changes profile along the length of the roof to compensate for the change in pitch.

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An open eave has a pronounced overhang often revealing projecting roof beams or brackets.

Roof eaves design.

If a sprocketted or bell cast detail is used then eaves courses should be no lower than the minimum recommended roof pitch. Roof eaves are extensions of rafter structure outside of the house frame. Eaves courses of tiles should be at same pitch as general tiling. A closed eave has very little or no overhang extension beyond the siding.

Roof overhangs at the eaves and rakes protect the walls below from rain and sun. A roof can come to an end in basically three ways. But are they really necessary. Individual rafter extensions block extensions are effective when you have a proper slope of the roof.

The intent is to create a uniform edge on the outside but a varying profile on the inside along the sloping roof. Construction imagesroof overhanggable roofflat roofmake a donationengineeringpresentationhouse designframe flat roof overhang framing. See more ideas about architecture architect architecture house. Fix a plywood board or proprietary tray to provide continuous support to underlay to prevent water retaining troughs.

The design of your eave is dictated by the construction of your roof. Your angled roof overhang at the house eaves is a very common design sketch at left. As long as the air path up under the roof is not blocked by insulation perforated soffit panels on the under roof side of that overhang will work just fine. With composite siding such as boral s truexterior siding over a ventilated rain screen and with properly executed flashing at the windows and doors the walls on the fhb house will be able to handle rain just fine.

A box eave is enclosed with a soffit. Types of eaves. Start with the rafter tails the main component of any eaves detail is the rafter tail the part of the rafter that extends beyond the exterior wall. Aug 19 2020 explore steve straughan s board roof eaves followed by 137 people on pinterest.

One way is to design the roof to have a parapet wall covering the roof edge. Trusses streamline construction but it s important when using them to make sure the resulting eave works with the design of your building.