Papercret Roof Trusses

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Papercret roof trusses.

They are designed at a 4 12 pitch to be spaced 2 foot on center. Spaceman s domes are built strong so they can withstand the extra weight of added moisture between long intervals of drought and drying. Energy trusses are designed to allow greater insulation depths at the heel. These trusses are positioned on the top plate of the endwall so the entire bottom chord is supported by the wall.

When it hardens papercrete is lightweight a good insulator up to r 2 per inch holds its shape even when wet and is quite strong with a compressive strength of 300 pounds per square inch psi. It can be used in the rafters of the trusses for insulation or sprayed to the underside of the roof itself but needs to be protected by a roof. Pre manufactured stock trusses are constructed with spruce pine fir spf or southern yellow pine syp lumber. While this article focuses on configurations we also have a very cool set of illustrations showcasing the different parts anatomy of roof trusses.