Wood Frame Flat Roof Construction

Sizes of joists needed for flat roof construction.

Wood frame flat roof construction. The majority of roofs are framed using wood trusses 1 with a few using wood with steel bracing. The run or half the building span is the base of the triangle. While most home builders will outsource the construction of roofing trusses the rafter supports of the roof itself learning to frame a roof yourself is one of the true arts of carpentry and a basic primer is covered below. So any timber joists that are used need to be strong enough to support this weight.

Platform and balloon frame construction. Steel has a much higher cost than wood nearly twice as much for materials. If you want a diy flat roof here are the steps to follow. Wood vs steel framing.

The rise or height of the roof at its peak is the altitude of the triangle. Below is an easy to follow manual for building flat roofs including a guide to flat roof framing and installation with plenty of details and specifications about the frame. 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. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof.

Wood frame construction is the predominant method of building homes and apartments in the united states enabling this nation to have the world s best housed popu. However it is also possible to build larger roofs using steel framing. Platform construction is much more common than balloon framing though balloon framing was employed in many two story houses before 1930. One important and perhaps not so obvious fact is that a flat roof is not.

The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. Framing a roof is the last step in framing new construction. As you may imagine there is a fair amount of weight involved here in terms of boards felt etc. Old asbestos roofs are often replaced with flat roofs.

Chapter 7 ceiling and roof framing 40 ceiling joists 40 flush ceiling framing 42 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.