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.
Ul 2218 standard roofing material.
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.
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.
The list of approved laboratories is shown below.
Ul 2218 standard for impact resistance of prepared roof covering materials.
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.
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.
If you live in a hail prone area consider impact resistant shingles which have a ul 2218 class 4 rating.
Impact resistant shingles may qualify for a discount on your homeowner s premium.
Roof coverings that have passed the ul standard 2218 test are classified as either class 1 2 3 or 4.
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.
Class 1 class 2 class 3 class 4.
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.
