Florida Roof Wind Zones

Manufactured housing institute basic wind zone map.

Florida roof wind zones.

Experts recommend a frieze board notched for the rafters. The florida building code uses these values in setting code for most. 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. The 3 tab 60 mph to 70 mph wind uplift rated roof covering shingles will be ripped off and leaks will be inevitable.

Strength design level ultimate wind speeds replace the asd level wind speeds in the 2007 florida building code. The 5th edition 2014 version separates building types by risk categories into three wind speed maps. With all that said if we were to rank the roofing materials from best to worst for coastal living it would go like this. The provisions include specifications for materials slope requirements and even roofing.

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. Hurricane roof bracing and strapping for wind mitigation in florida. 6 2 2 unless otherwise specified select the wind zone based on the strength design wind speed v ult as follows. It also requires these roofing materials be tested by way of overturning resistance and wind tunnel testing.

Section 1514 prescribes clear roof construction requirements for areas like south florida that are classified as high velocity hurricane zones. The strength of three second wind gusts basic wind speed expected to recur on average every 700 years. Wind speed maps are provided for each risk. A frieze board is a board that bridges the gap between roof and wall and is attached to both.

Staples are prohibited in florida and texas. Under the 5th edition 2014 florida building code the 5th edition 2014 florida building code goes into effect june 30 2015. Except the florida panhandle where the region lies within 1 mile of the coast. Wind borne debris region where design speeds are greater than 120 mph or greater than 110 mph if within 1 mile of the coast.

Building for a wind zone. Nails and straps are required by the florida building code. The primary changes are as follows. Wind speed maps 2010 fbcb the wind speed maps in the 2010 fbcb have been revised significantly from the 2007 florida building code.

Previous versions of the florida building code represented all building types on a single wind speed map.