Issue: DCA10-DEC- 243. The Petitioner “Mr. Timothy Graboski” is requesting clarification regarding the applications of Section 1507.7.1 of the 2007 Florida Building Code. The Petitioner’s question is as follows:

Question: For the project in question and using the Table 1507.2.7.1 and using the wind speed of 140 mph, is the asphalt shingle product classified as ASTM D3161 Class F or TAS 107 qualifying for this project?

Background:

1. Project description/Situation: The Petitioner is a State of Florida certified roofing contractor and in the process of providing a roofing quotation for a project located in Broward County, wind zone of 140 having and exposure C category and a roof mean height of 22 feet. The specified roof covering is asphalt shingles.

2. 2007 Florida Building Code:

1507.2.10 Wind Resistance of Asphalt Shingles. Asphalt Shingles shall be classified in accordance with ASTM D3161, TAS 107 or ASTM D7158 to resist the basic wind speed per Figure 1609. Shingles classified as ASTM D3161 Class D or ASTM D7158 Class G are acceptable for use in the 100-mph wind zone. Shingles classified as ASTM D3161 Class F, TAS 107 or ASTM D 7158 Class H are acceptable for use in all wind zones. Asphalt shingle wrappers shall indicate compliance with one of the required classifications as shown in Table 1507.2.10.

TABLE 1507.2.10 WIND RESISTANCE OF ASPHALT SHINGLES

MAXIMUM BASIC WIND SPEED MPH (per Figure 1609)	CLASSIFICATION
100	ASTM D 3161 Class D or ASTM D 7158 Class G or TAS 107
110	ASTM D 3161 Class F or ASTM D 7158 Class G or TAS 107
120	ASTM D 3161 Class F or ASTM D 7158 Class G or TAS 107
130	ASTM D 3161 Class F or ASTM D 7158 Class H or TAS 107
140	ASTM D 3161 Class F or ASTM D 7158 Class H or TAS 107
150	ASTM D 3161 Class F or ASTM D 7158 Class H or TAS 107

Staff recommendation:

Answer: Yes. According to Section 1507.2.10, shingles classified as ASTM D3161 Class F, TAS 107 or ASTM D7158 Class H is acceptable for use in all wind speed zones.