Pitched Roof Sip Construction

Want to learn more about extreme s sip roofs.

Pitched roof sip construction.

Typically composed of a layer of eps expanded polystyrene xps extruded polystyrene or polyurethane foam sandwiched between oriented strand board panels sips can provide r values for walls floors and roofs ranging from 14 to 58 depending on panel thickness and composition. The pitch of the roof is very low only 1 2 inch in 12 and the metal roofing has been applied directly over the sips with no air channel beneath the roofing for ventilation. The top of the roof was completely covered in a peel and stick membrane. The structural insulated panel association sipa is a non profit trade association representing manufacturers suppliers dealer distributors design professionals and builders committed to providing quality structural insulated panels for all segments of the construction industry.

The standard 8 x 24 sip size is determined by availability of jumbo osb. When the house was built melton sealed the seams between roof panels with tape applied on the bottom of the panels. With regards to the pitch the building standard code bs 5534 recommends a minimum pitch of 20 0 for slate roofs. In both cases melton now says the seams of the tape and the roofing membrane didn t seem to stick very well.

Although there is no single standard roof pitch used on all sloped roofs factors such as roofing materials and local climate help to determine the appropriate range of pitches for a given building. The two basic construction methods of pitched roofs are. But since there is still a wide variety of slate roofing systems there are occasions when the minimum pitch can go down to as low as 15 0 depending on the uniqueness of the roof. The speed of construction offered by jumbo panels has resulted in the 8 x 24 size osb becoming the sip industry standard.

A job using numerous 8 x 13 panels will be much more expensive than one using 8 x 12 panels. The cost of a sip project is partially dictated by the number of 8 x 24 sheets that are required. Prefabricated trusses which are delivered to site and erected. There are also a number of other framed constructions such as portal frame roofs.

A traditional method of cutting timber on site and building up the roof using rafters joists purlins ridge boards etc. Robin is working on an extension so we thought we d shadow him for the day and see how he creates a pitched roof or semi pitched roof leading up to a flat.