Hail Resistant Roof
Be Prepared to Weather The Storm
When it comes to the protection of buildings, the roof is the first line of defence against severe weather, and there are few weather events more devastating to a roofing system than hailstorms. In recent years, they have become more frequent and severe across the country. As the quintessentially Canadian atmospheric peril, hail presents a risk in all provinces, but disproportionately impacts Alberta, Saskatchewan, and Manitoba. Canada’s infamous “Hailstorm Alley” runs through south-central Alberta, from Calgary through Red Deer to Edmonton[1]. On average, the Prairies receive approximately 130 severe hail events per year[2].
According to Environment Canada, the severe thunderstorm warning criteria for hail is when hailstones of 20 mm in diameter or greater (nickel-sized or larger) are expected[3].
The degree of damage to properties, however, varies according to the individual hailstone size, shape and density, the duration of the hailstorm, the concentration of hailstones, and the accompanying wind speed and direction. Depending on these factors and the type of property at risk under consideration, the types of damage from hail could be cracks, tearing, spatter marks, dents, or cap sheet membrane damage[4].
Severe Hail = Nickel-Sized Hailstones or Larger
ROOF SYSTEMS NEED TO BE DESIGNED AND INSTALLED WITH RESILIENCE IN MIND.
Did you know that the Calgary hailstorm on June 13, 2020, caused the filing of approximately 70,000 claims and over $1.2 billion in insured damage, thus eclipsing the $400 million hailstorm event 10 years prior? It was the fourth costliest natural disaster in Canada[5]!
SOPREMA LEADS THE INDUSTRY IN SYSTEMS WITH SEVERE HAIL RATING
When it comes to roof assemblies with severe hail rating, SOPREMA offers a wide range of solutions.
STEEL DECK ASSEMBLY
ROOFNAV: 428396-50010-0
FM 1-90 (CLASS A, SEVERE HAIL)
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2-1 SOPRASMART ISO HD (bonded with DUOTACK) or 2-1 SOPRASMART BOARD (bonded with DUOTACK)
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Thermal barrier (fastened)
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Steel deck
CONCRETE DECK ASSEMBLY
ROOFNAV: 428397-50010-0
FM 1-195 (CLASS A, SEVERE HAIL)
RESOURCES
Click the links below to find out more important information about FM, CSA 123.21 and RoofNav.
More Info From FM Global
CSA
RoofNav Home Page
Did you know that in 2019, Environment Canada reported that hailstones larger than 100 millimetres (four inches) in diameter (grapefruit-sized) fell around Spruce Grove, Alberta, while wind gusts topped 70 km/h (43 mph) west of Edmonton[6].
HAIL ROOF DAMAGE
PROJECT PROFILE
Did you know that the City of Calgary recently announced the implementation of a program to help Calgarians pay to repair their roofs with more resilient materials?
[1] Damage from Hail, the Quintessentially Canadian Peril | AIR Worldwide (air-worldwide.com) [2] Environment and Climate Change Canada – Weather and Meteorology – Spring and summer weather hazards [3] Environment and Climate Change Canada – Weather and Meteorology – Spring and summer weather hazards [4] Damage from Hail, the Quintessentially Canadian Peril | AIR Worldwide (air-worldwide.com)¸ [5] List of costly or deadly hailstorms – Wikipedia, [6] Holy hail storm: Grapefruit-sized hail batters Edmonton-area | CBC Newshttps://www.cbc.ca/news/canada/edmonton/grapefruit-sized-hail-crop-conditions-climate-change-1.5235981
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