Flat Roof Wood Framing

Converting a flat roof to pitched.

Flat roof wood framing.

Then you will install sleepers or flat 2x6s laid flat every 16 on top of the roof surface. 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. This could mean flat roofs may not raise the same red flags they used to. Flat roof framing is relatively straightforward.

Flat roofs are hard to replace. A flat roof has a slope of 1 8 per foot to 2 12. Flat roofs are always built at a slight incline at least 1 8 inch per foot. 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. 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. Some roofs actually slope in several directions ensuring optimal water runoff. If you build a flat roof try to have it slope in multiple directions to drains or gutters.

The rise or height of the roof at its peak is the altitude of the triangle. When framing a flat roof you will need to create a slight incline. Converting a flat roof to a pitched roof is essentially framing a new roof for an average of 6 to 9 per square foot. This will help you create a flat roof framing plan.

It is not ideal for snow or heavy rain but modern materials and proper drainage have helped. 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 framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle.

This will provide the surface for you to attach the decking. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof. 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. 2x framing wood joists timber framing laminated beams steel concrete or sips.

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. Think of a flattened hip roof. The run or half the building span is the base of the triangle.