Flat Roof Wood Framing

Then you will install sleepers or flat 2x6s laid flat every 16 on top of the roof surface.

Flat roof wood framing.

Some roofs actually slope in several directions ensuring optimal water runoff. Converting a flat roof to pitched. Of course you don t need to live in a modern house to deal with a flat roof. When framing a flat roof you will need to create a slight incline.

It is not ideal for snow or heavy rain but modern materials and proper drainage have helped. Yet for historic modern style buildings like this old house s cambridge tv project flat roofs are at the core of the architecture meant to reflect the broad horizontal lines of the natural landscape. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. But now flat roofs often are constructed with fewer layers because of improved waterproofing technology.

Depending on the span many different materials can frame a flat roof. The run or half the building span is the base of the triangle. Post and beam framing 42 roof slopes 44 flat roofs 45 pitched roofs 45 valleys 48 dormers 48 overhangs 48 ridge beam roof details 49 lightweight wood roof trusses 49 chapter 8 wall sheathing 53 types of sheathing 53 corner bracing 54 installation of sheathing 54 chapter 9 roof sheathing 58 lumber sheathing 58. 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.

A flat roof has a slope of 1 8 per foot to 2 12. And the line length measurement from the roof peak to the building wall is the hypotenuse. There are proprietary pedestal systems that provide a very stable level and serviceable deck over a roof membrane though they are relatively expensive compared to conventional methods. Flat roofs are hard to replace.

Think of a flattened hip roof. Flat roofs are always built at a slight incline at least 1 8 inch per foot. You can do this with a foam layer that exactly fits your roof. It can be framed like a floor system with horizontal framing members at 16 19 or 24 o c.

2x framing wood joists timber framing laminated beams steel concrete or sips. This will help you create a flat roof framing plan. If you build a flat roof try to have it slope in multiple directions to drains or gutters. Flat roof framing is relatively straightforward.

Detailed flat to pitched roof conversion costs include hourly rates which tend to be higher in addition to considerations like complexity equipment and material prices. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof. The rise or height of the roof at its peak is the altitude of the triangle.