The Roofing Book

Materials / Class 4 Impact-Resistant Shingle

Class 4 Impact-Resistant Shingle

UL 2218 Class 4

Asphalt (often SBS-modified rubberized) shingles that pass UL 2218 Class 4, the highest impact rating, resisting a 2-inch steel ball dropped from 20 feet without cracking.

Category family
asphaltic
Typical lifespan
25–30 years
Typical wind resistance
up to 130 mph
Typical fire rating
Class A
Max impact class
UL 2218 Class 4
Weight per square
240–400 lbs
Cost band
$$$
Slope suitability
steep
Typical warranty
30–50 years
Pros
  • highest UL 2218 impact class
  • may qualify for insurance premium discounts in hail regions
  • often SBS-modified for flexibility
Cons
  • higher cost than standard laminates
  • impact rating does not guarantee no hail damage
Colorado notes
  • hail_performance: widely specified across the Colorado Front Range hail belt
  • altitude_uv: SBS-modified asphalt retains flexibility under Colorado temperature swings

Manufacturers

Atlas Roofing Corporation CertainTeed GAF IKO Malarkey Roofing Products Owens Corning PABCO Roofing Products TAMKO Building Products

Named products

Atlas Pinnacle ImpactAtlas Roofing Corporation Atlas StormMaster ShakeAtlas Roofing Corporation CertainTeed BelmontCertainTeed CertainTeed Carriage HouseCertainTeed CertainTeed Landmark ClimateFlexCertainTeed CertainTeed Landmark PremiumCertainTeed CertainTeed NorthGate ClimateFlexCertainTeed CertainTeed Presidential Shake IRCertainTeed CertainTeed Presidential Shake TLCertainTeed GAF Camelot IIGAF GAF Grand Sequoia ASGAF GAF Grand Sequoia RSGAF GAF SlatelineGAF GAF Timberline AS IIGAF GAF Timberline UHDZGAF GAF WoodlandGAF IKO Crowne SlateIKO IKO NordicIKO Malarkey LegacyMalarkey Roofing Products Malarkey VistaMalarkey Roofing Products Malarkey WindsorMalarkey Roofing Products Owens Corning Duration STORMOwens Corning Owens Corning TruDefinition Duration FLEXOwens Corning Owens Corning WoodcrestOwens Corning Owens Corning WoodmoorOwens Corning PABCO PrestigePABCO Roofing Products ParamountPABCO Roofing Products Paramount AdvantagePABCO Roofing Products TAMKO HailGuardTAMKO Building Products TAMKO StormFighter FLEXTAMKO Building Products

Related guides

Commercial Flat-Roof Options Asphalt vs. Metal vs. Tile Wind & Fire Ratings New Roof Cost Class 4 Impact-Resistant Shingles Class 4 Insurance Discounts

Sources