One of the most significant requirements of the final assembly of a roof is its resistance to wind “uplift” that comes from negative pressure that develops as the fast moving air (wind) blows across the roof surface. At the onset of single ply roofing, the “uplift chamber” was introduced by the roof contracting community in the late 1960’s to illustrate how wind-resistant their built-up roofs were. This concept was attractive to Factory Mutual Insurance Company and in 1970 they introduced their Property Loss Prevention Data Sheet FM 1-52 for “field verification of roof wind uplift resistance”. This is still part of their loss prevention program. In 1983 ASTM introduced their Standard Test Method E 907 for field testing uplift resistance of the roof. As early as 2011 the Florida Building Code adopted a similar test procedure for field uplift resistance known as TAS 124 for their high wind environment. 

The Canon Model 500 Uplift Chamber© complies with the requirements of Factory Mutual, ASTM, and the Florida Building Code. It is most often used in the field but can also be used in the laboratory. 

The Canon Fabrications Model 500 Uplift Chamber© is fabricated from aircraft aluminum. The chamber body components are laser-cut to very close tolerances (±0.003″) for superior pressure retention.