Flat Roof Framing Methods

Which should be considered when investigating fixing methods.

Flat roof framing methods.

Depending on the span many different materials can frame a flat roof. You can do this with a foam layer that exactly fits your roof. Roof framing can be simple or complex depending on the roof. Of course flat roofs are not flat but have a very slight roof pitch of between 1 4 to 1 2 per foot.

2x framing wood joists timber framing laminated beams steel concrete or sips. Two basic methods are used for framing a house. It can be framed like a floor system with horizontal framing members at 16 19 or 24 o c. Platform construction is much more common than balloon framing though balloon framing was employed in many two story houses before 1930.

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. This will help you create a flat roof framing plan. Stick truss roof framing. Platform and balloon frame construction.

And the line length measurement from the roof peak to the building wall is the hypotenuse. The rise or height of the roof at its peak is the altitude of the triangle. Flat roof framing is relatively straightforward. Framing a roof is the last step in framing new construction.

2011 control of condensation in buildings is the document to view. The run or half the building span is the base of the triangle. With platform frame construction shown below walls sit on top of subflooring. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle.

Overhangs hips and dormers add greatly to the complexity of the framing. This air is vented at either end of the roof to allow a continuous air flow. Just enough slope to drain water but also flat enough to be a problem if not constructed properly. Put simply a warm flat roof has insulation of some kind packed into every available void and a cold flat roof allows air to circulate between the joists.

Adhesives may be useful in bonding the framing of the deck to the sub floor without creating holes. The flat roof is an architectural device that is loved by designers for its ability to create simplistic linear forms. Some roofs actually slope in several directions ensuring optimal water runoff. Nearly all roofs are framed using one of two methods.

When framing a flat roof you will need to create a slight incline.