Roof Tiles Wind Speed

Proper installation will only end the damage caused by high winds.

Roof tiles wind speed.

45 57 mph. Monier guide to wind classification 3 what is wind classification step 1. Likelihood of shutter puncture 100 120 mph bsw. Geographic wind speed region determining a wind speed classification the wind classification relates to gust.

Clay and concrete tile roofing has been tested in accordance with 2017 florida building code residential sixth edition to meet section r 4402 high velocity hurricane zones roof assemblies and rooftop structures with wind speeds up to 150 miles per hour. Furthermore the roofing designer or specifier sometimes assumes if there is a design wind speed requirement of 90 mph then the roof system must have a 1 90 rating which is not always true at least not for the reason they think maybe for tall buildings or if other factors exist. Alot of the homes in this area have cement tile roofs. Whilst the nhbc technical manual seeks to simplify the requirements of roof tile fixings it would appear that for some roofs have passed the nhbc final inspection with roof tiles that are not adequately fixed to comply.

Consumers can check individual ul listings usually present on the product packaging to find out the wind velocity resistance of individual brands. There are two types. Ul s test method ans ul 2390 has found the wind resistance of asphalt shingles with sealed tabs to be between 60 to 150 mph. As you may all know we have suffered several hurricanes over the past 2 years.

Recently i have received reports from some engineering firms hired by the insurance companies that have been stating in unison that wind does not affect the structural integrity of a cement tile roof. Assessment of wind borne tile impact on approved missile impact resistant products presentation given 12 11 2004 to hrac paper under peer review in wind and structures key findings re. Independent testing sponsored by tri alliance shows that with proper attachment clay and concrete roof tiles can sustain winds in excess of 125 miles per hour that would strip off most other roofing materials. Prone regions where the basic wind speed is equal to or greater than 110 mph 3 second peak gust the windborne debris issue is of greater concern than in lower wind speed regions.

There are currently no testing standards requiring roof tile systems to be debris impact resistant. A standing seam roof and the water shedding roofing system. It all depends on the quality of the chosen material and the amount of the resistance against the wind. Whilst the over 60 degree statement does agree with bs5534 below 60 degrees it only complies in low wind uplift situations.

So what wind speeds do you need to be worried about. Some metal roofing can withstand wind speeds of more than 150 mph. Craftsmanship is also important. Minimal risk except for long flight distances 45 m in exposure c and d.