HTP FP-40SC - Manual (Page 21)

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Figure 17: Roof with J bolt penetration
A. ROOF ATTACHMENT
In order to meet strength requirements in areas with winds up to 130 mph / 208 kmh and category “D”
exposure, collectors should be mounted into roof studs using lag threaded bolts or J bolts. Any other
installation format should be approved by a structural engineer.
When attaching to the roof surface, it is important to ensure proper sealing to prevent water penetration. It
is also important to consider the building structure and roof construction type to ensure the structure is
adequate for the collector’s weight and can withstand wind loads as determined by local codes. For
commercial buildings, it is especially recommended to consult a structural engineer.
Figure 18: Threaded bolt mounting
Figure 19: Detail of roof mount Figure 20: Detail of roof mount
Figure 16: Roof with lag bolt penetration