Ul Class 1 Roof

The best rating achieved is class a which is described by ul as effective against severe fire exposure class 1 rating.

Ul class 1 roof. A secure online source for increased visibility into your ul project files product information documents samples and services. A class 4 roof covering receives the highest premium credit. Experience maximum flame spread of 13 feet. When tested to ul 2218 shingles can achieve an impact resistance rating from class 1 through 4 with a class 4 rating being the highest and best.

Pressure treated shakes and shingles are the most common roofing materials to fall under the class b rating. Underwriters laboratory ul standard 2218 is a test method for evaluating impact resistance. With class 4 shingles there are no splits or tears. Class c roofing provides only light fire protection.

Last 1 hour before ignition. The hail standard ul 2218 essentially encompasses four different sized metal balls being dropped from different heights to simulate hail more or less. The ul certification mark on roofing products and assemblies is relied on by code enforcement officials and buyers to verify that your products and systems meet regulatory requirements. With a regular shingle most of our competitors impact resistant shingles are only class 3 cracks and ruptures will appear from that kind of impact.

In a class 4 ul 2218 impact resistance test a 2 inch steel ball is dropped from 20 feet to see if the shingles will fracture. Roofing with a class c rating is able to. The list of approved laboratories is shown below. Certification database ul product iq.

Ul developed a test to rate the strength of roofing materials called the ul 2218 impact rating which is the test that determines if a roofing material is class 1 2 3 or 4. According to the scope of fm 4470. A class 4 rating the material should not get damaged when hit twice in the same spot by 2 inch diameter steel ball. It also serves as a key differentiator for products within the roofing market.

The class 1 rating is an exclusive designation that can only be awarded by fm global which indicates the successful testing of the entire roof assembly using fm approval standard 4470. Class a b and c roof ratings helpful hints for achieving code compliance by howard hopper regulatory services program coordinator 2014 issue 1 2 facing a brave new and green world 3 the underlying truth about roofing underlayments 4 photovoltaic systems scan with your mobile qr code reader to find out more about ul support for code.