Florida Roof Wind Zones

Wind speed maps are provided for each risk.

Florida roof wind zones.

The 5th edition 2014 version separates building types by risk categories into three wind speed maps. Experts recommend a frieze board notched for the rafters. Hurricane roof bracing and strapping for wind mitigation in florida. High velocity hurricane zone of miami dade and broward counties.

Architectural grade shingles rated to withstand wind gusts up 130 mph are your best bet for high wind areas. The primary changes are as follows. 6 2 2 2 wind zone 2 140 mph ultimate design wind speed v ult 150 mph at greater than one mile 1 6 km from the coastline. Strength design level ultimate wind speeds replace the asd level wind speeds in the 2007 florida building code.

Wind borne debris region where design speeds are greater than 120 mph or greater than 110 mph if within 1 mile of the coast. 6 2 2 1 wind zone 1 130 mph ultimate design wind speed v ult 140 mph. It also requires these roofing materials be tested by way of overturning resistance and wind tunnel testing. Wind speed maps 2010 fbcb the wind speed maps in the 2010 fbcb have been revised significantly from the 2007 florida building code.

The 3 tab 60 mph to 70 mph wind uplift rated roof covering shingles will be ripped off and leaks will be inevitable. Section 1514 prescribes clear roof construction requirements for areas like south florida that are classified as high velocity hurricane zones. Previous versions of the florida building code represented all building types on a single wind speed map. With all that said if we were to rank the roofing materials from best to worst for coastal living it would go like this.

Manufactured housing institute basic wind zone map. If you re thinking about buying a prefab home keep in mind that a home built to wind zone 1 cannot be placed by the manufacturer in zones 2 or 3 but a home built to wind zone 3 standards can be placed in lower wind zones. 6 2 2 unless otherwise specified select the wind zone based on the strength design wind speed v ult as follows. Nails and straps are required by the florida building code.

Under the 5th edition 2014 florida building code the 5th edition 2014 florida building code goes into effect june 30 2015. The florida building code uses these values in setting code for most. Building for a wind zone. Except the florida panhandle where the region lies within 1 mile of the coast.

The strength of three second wind gusts basic wind speed expected to recur on average every 700 years.