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In 2011, Florida Law (Section 553.842) changed that prohibited the sale or promotion of any product as wind storm resistant without having a Florida product approval.

Any person who advertises, sells, offers, provides, distributes, or markets a product as hurricane, windstorm, or impact protection from wind-borne debris without such approval is subject to the Florida Deceptive and Unfair Trade Practices Act under part II of chapter 501 brought by the enforcing authority as defined in s. 501.203.

3M is the first film manufacturer to obtain such approval, obtained through Miami-Dade County.

3M has obtained a Local Product Approval pursuant to Section 553.842(5) for Ultra Prestige PR-S50 and Ultra S400. These products have received a component approval for small missile impact rating, as shown under Miami-Dade County, Florida NOA No.11-0302.02, which is effective until Aug 25, 2016. The approval applies to ¼" or thicker tempered glass that is over 30 ft above grade where the design load of the building does not exceed +/- 70 psf.

3M Safety and Security Films have been tested to the industry standards referenced in the Florida Building Code for impact resistance against wind borne debris and protection of glazed openings. Our films have been tested to ASTM E1886 / E1996, ASTM E330, and Miami-Dade County Protocols TAS-201 and TAS-202. These test methods involve impacting the filmed glass with high velocity missiles, ranging from steel ball bearings (simulating roofing gravel) to large 2"x4" pieces of lumber.

The evaluation criteria for passing are stringent -- not only must multiple windows be tested, but no tears or openings in the film are allowed after impact. Furthermore, after the windows are impacted with a missile, the filmed broken windows are subjected to hours of intense positive and negative wind loads cycles that simulate the strong gusts of wind experienced during a severe windstorm or hurricane.

What do the Design Pressures in ASTM E1886/E1996 mean? How do they correlate to wind speed? What is the Design Load of a building?

The Design Pressure is the amount of pressure that windows are exposed to after the missile impacts. The windows are put into a test chamber to model conditions that may be representative of pressures in a windstorm environment. The selected Design Pressures in ASTMs E1886 / E1996 are intended to correlate with the basic wind speeds for a building located in a given region. Each window is subjected to 9,000 air pressure cycles.



For example, if testing was conducted at a Design Pressure of 50 psf (pounds per square foot) this would relate to an approximate wind speed of 140 mph. 3M's Impact Protection Adhesive has been tested to a Design Pressure of +/- 70 psf, which correlates to approximately 165 mph wind speed. The Design Load is the calculated wind load rating for a building, also expressed in psf. The Design Load depends on numerous factors including the average wind speed of the region, the height of the building, terrain, and surrounding structures. If the building's Design Load does not exceed the Design Pressure at which a product was tested under ASTM E1886/E1996, that product may be suitable for use on that building. Architects or building engineers will have documentation of the building's Design Load.

ASTM E1996 describes several missile types that simulate windborne debris that may impact the glass. The Small Missile test consists of impacting a window with 10 steel balls at roughly 90 mph in 3 separate locations of the window. There are several different types of "Large" Missiles, ranging from Missile Level "B" to Missile Level "E", although missile "D" an 8-foot long 2x4" lumber with an impact velocity of roughly 34 mph, is often referred to as the "Large Missile" test in Florida.

3M Window Film

3M Window Film Depot

3M commercial window film installations control excessive heat gain & sun glare through existing windows of retail stores, office buildings and commercial properties.

Security & Safety

3M Window Film Depot

3M security film secures your glass in place protecting against ballistic threats, ‘smash and grab’ crime, industrial accidents and severe weather events.

Energy Management Films

3M Window Film Depot 1-866-933-3456

Control building ‘hot spots’, minimizing the dangers from unanticipated ‘brownouts’ during peak air conditioning and energy load periods.

 

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