Editor's note: This article is adapted from a paper presented at the 2017 Americas Conference on Wind Engineering.
When wind damages a roof assembly, a temporary roof often is needed to keep water from entering the building. However, because of a lack of adequate guidelines for the design of temporary roof securements, many damaged roof membranes and temporary roofs have been inadequately secured. When inadequately secured, they are vulnerable to blow-off and present a risk to people and property.
Following a wind event, a damaged roof should be investigated by a knowledgeable wind-damage investigator to determine the cause(s) of the damage and obtain data for designing the roof system repair or replacement. A quality investigation can help avoid or resolve disputes arising from the wind damage. Inadequate investigation and evaluation can result in a replacement roof assembly that possesses inadequate wind resistance, and it, too, may blow off.