Flat Roof Wood Framing

If you build a flat roof try to have it slope in multiple directions to drains or gutters.

Flat roof wood framing.

Depending on the span many different materials can frame a flat roof. This will provide the surface for you to attach the decking. Flat roofs are always built at a slight incline at least 1 8 inch per foot. Of course you don t need to live in a modern house to deal with a flat roof.

And the line length measurement from the roof peak to the building wall is the hypotenuse. 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. Then you will install sleepers or flat 2x6s laid flat every 16 on top of the roof surface. 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.

It can be framed like a floor system with horizontal framing members at 16 19 or 24 o c. A flat roof has a slope of 1 8 per foot to 2 12. When framing a flat roof you will need to create a slight incline. Flat roof framing is relatively straightforward.

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. 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. Think of a flattened hip roof.

But now flat roofs often are constructed with fewer layers because of improved waterproofing technology. Flat roofs are hard to replace. Converting a flat roof to a pitched roof is essentially framing a new roof for an average of 6 to 9 per square foot. It is not ideal for snow or heavy rain but modern materials and proper drainage have helped.

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. 2x framing wood joists timber framing laminated beams steel concrete or sips. This will help you create a flat roof framing plan. The run or half the building span is the base of the triangle.

The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof. Some roofs actually slope in several directions ensuring optimal water runoff.