Flat Roof Eaves Construction Details

Flat roofs are hard to replace.

Flat roof eaves construction details.

That is their functional purpose. But now flat roofs often are constructed with fewer layers because of improved waterproofing technology. 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. Trusses streamline construction but it s important when using them to make sure the resulting eave works with the design of your building.

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. As well as the small selection of roof detail drawings shown here many of the building notes have a related construction detail drawing with specific dimensions eg rafter sizes spans insulations types for purchase with the building specifications. Cad details document name pdf dwg download all cad construction details 37 1 mb 3 4 mb mc01 identification of roof areas 694 kb 167 kb mc01a single layer underlayment 678 kb 302 kb mc01b double layer underlayment 711 kb 322 kb mc02 vent pipe flashing 626 kb 349 kb mc03 valley. Flat roof construction for residential.

Open eaves with roof rafters right. They re simple in form and function and are a good example of the modernist principle of clean lines. They also help to frame windows on upper stories. This could mean flat roofs may not raise the same red flags they used to.

Some observers suggest it s harder to replace a flat roof than a traditional pitched shingle roof because of the labor required to remove its layers especially on older flat roofs. Back to flat roof construction. Although flat roofs are cheaper to build than pitched roofs they have a shorter life span. Details both in 2d and 3d to give a clear understanding.

Eaves courses of tiles should be at same pitch as general tiling. Application methods adhered flat roofs ballasted flat roofs. The following illustrations and text explain the common design details using eaves and verges that can occur on refurbishment and new work. Eaves form the overhang to distribute water clear of the walls.

Eaves with over fascia ventilation set top of fascia board at correct level and fit ventilator in accordance with manufacturers recommendations. Flat roof details and information relating to insulating a flat roof. Before roof trusses the exposed rafter tails were an extension of the roof framing. Open eaves with roof rafters.

An eave is the edge of the roof that overhangs the face of a wall and normally projects beyond the side of a building. For this content to be displayed you need to accept all cookies in the cookie settings and confirm your selection or by clicking the. However there is also an architectural purpose to them. A roof is considered to be flat when it is of a slope of 1 5 o to the horizontal.

If a sprocketted. Open eaves with trusses. Modern architecture has traditionally been characterized by flat roofs flat roofs create long horizontal planes reminiscent of the broad horizon line seen often in nature.