Metal Industry Certifications

Certifications

Trust the certified components manufactured by Whirlwind.

Whirlwind is committed to high quality. More than 40,000 of our steel buildings are standing strong across the country and around the world.

Every steel part we manufacture is fabricated to exceed the regulations set by the cities, counties, states, and organizations certifying metal building components. We are proud of our dedication to quality and have achieved the following certifications:

IAS AC472

We are accredited by the International Accreditation Service (IAS) in compliance with the Accreditation Criteria for Inspection Programs for Manufacturers of Metal Building Systems (AC472). Currently three of our plants are accredited.

Houston, TX – Certification number MB-131 – Parts A, B, and C
Claremore, OK – Certification number MB-217 – Part B
Lithia Springs, GA – Certification number MB-218 – Part B

Factory Mutual (FM Global)

Whirlwind’s Weather Lok-16 and Super Seam-Plus standing seam roof systems are approved in accordance with the FM 4471 Class 1 Approval Standard. However, many roof systems can be approved by Factory Mutual on your project by using the prescriptive method. See your sales representative for additional information.

ENERGY STAR

Texas Department of Insurance

Whirlwind has 10 panels listed.

Panels	Rc Number	Min Gage	Substrate
Weather Guard Roof Panel	RC-144	26	Minimum 15/32" Plywood Deck
Weather Snap-16 Roof Panel	RC-180	24	Minimum 15/32" Plywood Deck Minimum 1" x 4" No. 2 Southern Yellow Pine wood purlins Minimum 2" x 4" No. 2 Southern Yellow Pine wood purlins Minimum SG-101 16 gauge (0.056") steel hat purlins
Weather-Lok-16 Roof Panel	RC-182	24	Minimum 15/32" Plywood Deck Minimum 16 gauge (0.056") steel purlins
Cor Span Roof Panel	RC-183	29	Minimum 15/32" Plywood Deck Minimum 1" x 4" No. 2 Southern Yellow Pine wood purlins Minimum 2" x 4" No. 2 Southern Yellow Pine wood purlins Minimum SG-101 16 gauge (0.056") steel hat purlins
Low Rib Roof Panel	RC-184	29	Minimum 15/32" Plywood Deck
Sturdi-Rib Roof Panel	RC-185	29	Minimum 15/32" Plywood Deck Minimum 7/16" Oriented Strand Board (OSB) roof deck Minimum 1" x 4" No. 2 Southern Yellow Pine wood purlins
Super Span-X Roof Panel	RC-186	26	Minimum 15/32" Plywood Deck Minimum 16 gauge (0.056") steel purlins
Super Span-X Roof Panel	RC-480	24	Minimum 16 gauge (0.056") steel purlins
Low-Rib X Roof Panel	RC-483	26	Minimum 15/32" Plywood Deck Minimum 16 gauge (0.056") steel purlins
Super Seam-Plus Roof Panel	RC-485	24	Minimum 16 gauge (0.056") steel purlins

Underwriters Laboratories (UL) Uplift Resistance, Fire Ratings, and Impact Resistance

Our products currently fall into one or more groups of standards:

Standard for Uplift Resistance and Roof Assemblies, UL 580
Standard for Fire Tests of Building Construction and Materials, UL 263
Standard for Impact Resistance of Prepared Roof Covering Materials, UL 2218

Listings and Classifications of products that are in compliance with the above Standards are contained in the Roofing Materials & Systems Directory. This Directory is updated annually.

Commercial/Industrial Panels

Panel	Const. Number	panel width (in)	Panel Gauge	Lap at Endlaps	Member Screw Spacing	min. purlin Gauge	max. Purlin Spacing	Max. Insulation Over Purlins	UL Skylight	UL-2218 Impact Resistance	UL-263 Fire Rating	UL-580 Rating
Super Span (X)	30	36"	26 min.	3" to 6"	12 in.	16ga	5'-0³/₁₆"	4"	No	Class 4	Class A	Class 30
Super Span (X)	30	36"	26 min.	3" to 6"	4-8-4-8 in.	14ga	5'-0³/₁₆"	4"	No	Class 4	Class A	Class 90
Super Span (X)	79	36"	26 min.	3" to 6"	5-7-5-7 in.	16ga	5'-0³/₁₆"	4"	No	Class 4	Class A	Class 90
Super Span (X)	161	36"	26 min.	3" to 6"	5-7-5-7 in.	16ga	5'-0³/₁₆"	6"	No	Class 4	Class A	Class 90
Super Span (X)	167	36"	24 min.	4" to 6"	5-7-5-7 in.	16ga	5'-0³/₁₆"	6"	Yes	Class 4	Class A	Class 90
Low Rib (X)	39	36"	26 min.	6"	6 in.	16ga	5'-0³/₁₆"	4"	No	Class 4	Class A	Class 90
7.2 Rib	244	36"	26 min.	4" min.	7.4 in.	16ga	5'-0³/₁₆"	4"	No	Class 4	Class A	Class 90

Agricultural/Residential Panels

Panel	Const. Number	panel width (in)	Panel Gauge	Lap at Endlaps	Member Screw Spacing	Substructure	max. Joist Spacing	UL Skylight	UL-2218 Impact Resistance	UL-263 Fire Rating	UL-580 Rating
Sturdi-Rib	560	36"	29 min.	6"	Interior is 9" Endlap is 4" average See Spec	5/8" min. Plywood	2'-0"	No	Class 4	Class A	Class 30
Sturdi-Rib	560	36"	29 min.	6"	Interior is 9" Endlap is 4" average See Spec	2" x 4" Lathe No. 2 or Better	4'-0"	No	Class 4	Class A	Class 90
Sturdi-Span	561	36"	29 min.	6"	Interior is 9" Endlap is 4" average See Spec	5/8" min. Plywood	2'-0"	No	Class 4	Class A	Class 90
Sturdi-Span	561	36"	29 min.	6"	Interior is 9" Endlap is 4" average See Spec	2" x 4" Lathe No. 2 or Better	4'-0"	No	Class 4	Class A	Class 90
Weather Guard	529	12"	29 min.	N/A	12"	5/8" min. Plywood	2'-0"	No	Class 4	Class A	Class 90

Agricultural/Standing Seam Panels

Clip Types: (Fx) Fixed, (Mv) Movable or Floating, (A) Articulating, (U) Utility

Panel	Const. Number	Panel Width (in)	Gauge	Clip Type	Max. Clip Spacing	Substrate	Max. Insulation Over Purlins	UL Skylight	UL-2218 Impact Resistance	UL-263 Fire Rating	UL-580 Rating
Super Seam-II	180B	24"	24 min.	Fx, Mv, A	5'-0"	Composite System	See Spec	No	Class 4	Class A	Class 30
Super Seam-II	205	24"	24 min.	Fx, Mv	5'-0"	Open Framing	6"	No	Class 4	Class A	Class 90
Super Seam-II	205A	24"	24 min.	Mv, A	5'-0"	Open Framing	6" w/ ⅜" spacer 5" w/ 1" spacer	Yes	Class 4	Class A	Class 90
Super Seam-II	286	24"	26 min.	U	5'-0"	Plywood	1½"	No	Class 4	Class A	Class 90
Super Seam-II	308B	24"	24 min.	Fx, Mv, A	5'-0"	Composite System	See Spec	No	Class 4	Class A	Class 90
Super Seam-II	534	24"	24 min.	Mv, A	5'-0"	Open Framing	6"	Yes	Class 4	Class A	Class 90
Super Seam-II	535	24"	24 min.	Fx, Mv	5'-0"	Open Framing	6"	No	Class 4	Class A	Class 90
Super Seam-II	536	24"	24 min.	Mv, A	5'-0"	Composite System	See Spec	No	Class 4	Class A	Class 90
Super Seam-II	537	24"	24 min.	Mv, A	5'-0"	Composite System	See Spec	Yes	Class 4	Class A	Class 90
Super Seam-II	541	24"	26 min.	Mv, A	5'-0"	Plywood	N/A	No	Class 4	Class A	Class 90
Super Seam-Plus	180C	24"	24 min.	A	5'-0"	Composite System	See Spec	No	Class 4	Class A	Class 90
Super Seam-Plus	287	24"	24 min.	A	5'-0"	Open Framing	6" w/ ⅜" spacer 5" w/ 1" spacer	Yes	Class 4	Class A	Class 90
Super Seam-Plus	308	24"	24 min.	A	5'-0"	Composite System	See Spec	No	Class 4	Class A	Class 90
Super Seam-Plus	450	24"	24 min.	A	5'-0"	Open Framing	6"	Yes	Class 4	Class A	Class 90
Super Seam-Plus	538	24"	24 min.	Mv	5'-0¼"	Open Framing	6"	Yes	Class 4	Class A	Class 90
Super Seam-Plus	539	24"	24 min.	Mv	5'-0"	Composite System	See Spec	No	Class 4	Class A	Class 90
Super Seam-Plus	540	24"	24 min.	Mv	5'-0"	Composite System	See Spec	Yes	Class 4	Class A	Class 90
Weather Guard	529	12"	26 min.	UL 90	12"	Plywood	N/A	No	Class 4	Class A	Class 90
Weather Lok-16	506	16"	24 min.	Fx, Mv	5'-0"	Open Framing	8" no spacer 6" w/ spacer	No	Class 4	Class A	Class 90
Weather Lok-16	506A	16"	24 min.	Fx, Mv	4'-0"	Composite System	See Spec	No	Class 4	Class A	Class 90
Weather Lok-16	506B	16"	24 min.	Fx, Mv	2'-6"	Plywood	See Spec	No	Class 4	Class A	Class 90
Weather Snap-16	255	18" max.	24 min.	UL 90	4'-0"	Open Framing	4" Rigid	No	Class 4	Class A	Class 90
Weather Snap-16	303	18" max.	24 min.	UL 90	4'-0"	Composite System	See Spec	No	Class 4	Class A	Class 90
Weather Snap-16	342	18" max.	24 min.	UL 90	4'-0"	Composite System	See Spec	No	Class 4	Class A	Class 90
Weather Snap-16	343	18" max.	24 min.	UL 90	3'-0"	Plywood / OSB	See Spec	No	Class 4	Class A	Class 90
Weather Snap-16	414	18" max.	24 min.	UL 90	3'-0"	Plywood	See Spec	No	Class 4	Class A	Class 90
Weather Snap-16	436	18" max.	24 min.	UL 90	4'-0"	Plywood	See Spec	No	Class 4	Class A	Class 90
Weather Snap-16	446	18" max.	24 min.	UL 90	4'-0"	Open Framing	3"	No	Class 4	Class A	Class 90
Weather Snap-16	448	18" max.	24 min.	UL 90	4'-0"	Composite System	See Spec	No	Class 4	Class A	Class 90
Weather Snap-16	486	18" max.	24 min.	UL 90	4'-0"	Composite System	See Spec	No	Class 4	Class A	Class 90
Weather Snap-16	508A	18" max.	24 min.	UL 90	3'-0"	Composite System	See Spec	No	Class 4	Class A	Class 90
Weather Snap-16	543	18" max.	24 min.	UL 90	4'-0" w/ 24ga 5'-0" w/ 22ga	Open Framing	3"	No	Class 4	Class A	Class 90
Weather Snap-16	544	18" max.	24 min.	UL 90	4'-0"	Composite System	See Spec	No	Class 4	Class A	Class 90

Florida Approvals

Whirlwind has several panels approved for use in a multitude of situations. All framing and substrates must be designed in accordance with the 2014 Florida Building Code. To see the full list of requirements refer to the approval on FloridaBuilding.org

FL17700
Category: Structural Components
Subcategory: Roof Deck

FL #	PANEL	Substrate	HVHZ Approved
17700.1	26ga Low Rib X	Open Framing - Min. 16ga steel framing	No
17700.2	29ga Sturdi-Rib	Open Framing - Minimum 1" x 4" No. 2 Southern Yellow Pine wood purlins over supports @ maximum 24" o.c.	No
17700.3	24ga Super Seam-Plus	Open Framing - Min. 16ga steel framing	No
17700.4	26ga Super Span X	Open Framing - Min. 16ga steel framing	No
17700.5	24ga Weather Lok-16	Open Framing - Min. 16ga steel framing	No

FL17702
Category: Structural Components
Subcategory: Structural Wall

FL #	Panel	Substrate	HVHZ Approved
17702.1	26ga 7.2 Rib / 7.2N Rib	Open Framing - Min. 16ga steel framing	No
17702.2	26ga Low Rib X	Open Framing - Min. 16ga steel framing	No
17702.3	26ga Super Span X	Open Framing - Min. 16ga steel framing	No

FL17704
Category: Roofing
Subcategory: Metal Roofing

FL #	PANEL	SUBSTRATE	HVHZ APPROVED
17704.1	29ga Sturdi-Rib	Minimum 7/16" OSB sheathing over supports @ maximum 24" o.c.	No
17704.2	29ga Sturdi-Rib	Minimum 15/32" APA rated plywood over supports @ maximum 24" o.c.	No
17704.3	24ga Weather Lok-16	Minimum 15/32" APA rated plywood over supports @ maximum 24" o.c.	No
17704.4	24ga Weather Snap-16	Minimum 15/32" APA rated plywood over supports @ maximum 24" o.c.	No

Cool Roof Rating Council® (CRRC)

Whirlwind has two colors listed with the CRRC.

CRRC ID	Color	Paint Type	Solar Reflectance	Thermal Emittance	Solar Reflectance Index (SRI)	Low Slope	Steep Slope
0778-0002	Cool White	Ceram-A-Star	0.75	0.86	92	Yes	Yes
0778-0001	Solar White	Trinar	0.71	0.85	86	Yes	Yes

Solar Reflectance - the fraction of solar energy that is reflected by a surface on a scale of 0 to 1. Black paint has a solar reflectance of 0; white paint has a solar reflectance of 1. Typically the larger the solar reflectance value, the greater the energy savings.

Thermal Emittance - the relative ability of a surface to emit or release energy by radiation on a scale of 0 to 1. Typically the larger the emissivity value, the greater the energy savings.

Solar Reflectance Index (SRI) - a measure of the surface’s ability to stay cool in the sun by reflecting solar radiation and emitting thermal radiation. It is defined such that a standard black surface has an initial SRI of 0, and a standard white surface has an initial SRI of 100. Typically the larger the index value, the greater the energy savings.

City of Houston - Public Works and Engineering Certificate of Approval

For more information on all of Whirlwind's certifications and associations please contact our research and development department.

The Whirlwind Promise

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Certifications

IAS AC472

Factory Mutual (FM Global)

ENERGY STAR

Texas Department of Insurance

Underwriters Laboratories (UL) Uplift Resistance, Fire Ratings, and Impact Resistance

Florida Approvals

Cool Roof Rating Council® (CRRC)

City of Houston - Public Works and Engineering Certificate of Approval

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The Whirlwind Promise

METAL BUILDINGS

Metal Roofing & Siding

COMPONENTS

Services

Technical Specifications

Contact Us

THE Whirlwind PROMISE

Certifications

the whirlwind promise

Resources

subhead

Lorem Ipsum Dolor call to action text goes here

Certifications

IAS AC472

Factory Mutual (FM Global)

ENERGY STAR

Texas Department of Insurance

Underwriters Laboratories (UL) Uplift Resistance, Fire Ratings, and Impact Resistance

Florida Approvals

Cool Roof Rating Council® (CRRC)

City of Houston - Public Works and Engineering Certificate of Approval

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Contact us

800-324-9992