Roof coverings that have passed the ul standard 2218 test are classified as either class 1 2 3 or 4.
Ul 2218 standard roofing material.
Spread of flame ul 790 burning brand testing ul 790 impact test ul 2218 intermittent flame testing ul 790 solar reflectance thermal emittance coating thickness astm c1549 and c1371 wind resistance astm d3161 wind uplift ul 1897 10x10 and 12x24 deck wind uplift ul 580.
The following is being proposed.
The ul 2218 classification set a standard for roof impact resistance whereby materials were rated on their resistance to impacts with steel balls simulating 90 mph hailstones of various sizes.
I have installed in accordance with the manufacturer s specifications on the above described residence a roof covering listed as complying with underwriters laboratory standard 2218 impact standard for impact resi stance of prepared roof covering materials with an impact resistance classification of.
Impact resistant shingles may qualify for a discount on your homeowner s premium.
The industry guideline ul 2218 exists to test a metal panel s resistance to puncturing or failing when it comes into contact with items such as hail or other small debris.
Reaffirmation and continuance of the second edition of the standard for safety for impact resistance of prepared roof covering materials ul 2218 as an american national standard.
Class 1 class 2 class 3 class 4.
For purposes of this standard prepared roof covering materials are considered to be small.
Metal roofing comes in vertical panels or shingles resembling slate tile and shake and lasts about 60 years.
Ul standard for safety impact resistance of prepared roof covering materials this test method provides impact resistance data for the evaluation of prepared roof covering materials.
As you contact various contractors or suppliers you should ask about roofing materials that meet ul standard 2218.
Ul 2218 2nd edition january 25 2010 ul standard for safety impact resistance of prepared roof covering materials this test method provides impact resistance data for the evaluation of prepared steep slope roof covering materials.
The classifications for impact resistance are expressed as class 1 2 3 or 4 which relate to a roof covering s ability to withstand impacts from 1 1 4 1 1 2 1 3 4 and 2 diameter steel balls respectively.
The list of approved laboratories is shown below.
A class 4 roof covering receives the highest premium credit.
