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.
Ul 2218 standard roofing material.
Roof coverings that have passed the ul standard 2218 test are classified as either class 1 2 3 or 4.
Class 1 class 2 class 3 class 4.
Metal roofing comes in vertical panels or shingles resembling slate tile and shake and lasts about 60 years.
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.
If you live in a hail prone area consider impact resistant shingles which have a ul 2218 class 4 rating.
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.
As you contact various contractors or suppliers you should ask about roofing materials that meet ul standard 2218.
A class 4 roof covering receives the highest premium credit.
Impact resistant shingles may qualify for a discount on your homeowner s premium.
The list of approved laboratories is shown below.
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.
The following is being proposed.
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.
Ul 2218 class 4 impact resistant hip and ridge shingles march 18 2015 results of recent testing have shown malarkey roofing products 10 225 and 12 227 hip ridge stripsmeet the ul 2218 class 4 impact resistant standard the highest rating possible.
For purposes of this standard prepared roof covering materials are considered to be small.
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.
