Roof Wind Ratings

For basic wind speed map fig.

Roof wind ratings.

A typical architectural laminate carries a 110 mph wind rating using 4 5 nails. The basic design wind speed v mph corresponds to a 3 second gust speed at 33 above ground in exposure category c and is associated with an annual probability of 0 02 of being equalled or exceeded 50 year mean recurrence interval. The most common type are 3 tab shingles. Shingles that passed this test were designated as f rated shingles per astm d 3161 modified to 110 mph.

For example if the pressure level was at 105 psf when the failure occurred the approval level would be set at the preceding level or 90 psf giving the assembly a 1 90 rating. The 3 tab 60 mph to 70 mph wind uplift rated roof covering shingles will be ripped off and leaks will be inevitable. Most customer reviews of pabco roofing shingles are positive. With extreme wind events on the rise now is the time to.

Only available in four colors. Class a for winds up to 60 mph class d 90 mph class f 110 mph class g 120 mph and class h 150 mph. Class a fire resistance rating. 6 1 see wind map worksheet of this workbook.

This type of roofing material is classified based on wind speed resistance and with wind ratings categorized as follows. In most cases using staples will void the manufacturer wind rating warranty. 110 130 mph wind warranty. The minimum wind approval rating is 60 psf.

The approval for that assembly is established at the level preceding failure. The same shingle qualifies for a 130 mph wind rating level 5 hurricane if you use 6 fasteners per shingle. Mark gallant jun 22 2020. With all that said if we were to rank the roofing materials from best to worst for coastal living it would go like this.

These single layer shingles are typically rated for winds up to only 60 mph and moderate impact from flying debris or hail. The height of the roof and exposure and risk categories are factors that are used to convert design wind speed to an uplift pressure. Understanding wind uplift ratings for roofing. Architectural grade shingles rated to withstand wind gusts up 130 mph are your best bet for high wind areas.

One thing to watch out for is an installer utilizing staples to install the roof. The first ratings in excess of 100 mph were those developed using an american society of testing and materials astm test standard astm d 3161 where 110 mph winds were blown over inclined surfaces of shingles for a one hour period.