What Is Impact-Resistant Shingles?
Impact resistance is graded under UL 2218 by dropping steel balls on shingles: Class 4 (the highest) must survive a 2-inch ball from 20 feet without cracking. In hail-prone Texas, most insurers offer premium credits on the wind/hail portion of the policy for a certified Class 4 roof - commonly in the 10-35 percent range on that portion - and Texas law addresses how these discounts are made available. Because the wind/hail component is often the largest piece of a Central Texas premium, the upgrade (typically $1-$4 more per square foot at install) can pay for itself in premium savings over several years while also reducing the odds of a future claim and the deductible that comes with it. Class 4 does not make a roof hail-proof, and insurers may require certification paperwork from the installing contractor at policy time. Some policies pair discounts with cosmetic-damage exclusions - worth reading before buying.
Important Distinction
Note: Class 3/Class 4 here refers to UL 2218 impact ratings, not to shingle wind ratings (Class F/H) or fire ratings (Class A) - three different scales that homeowners routinely conflate.
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Also Known As
These are the search terms and phrases that commonly refer to this topic, so you can find it however you describe it.
How Impact-Resistant Shingles Relates to Other Topics
A Class 4 rating (UL 2218) means a 2-inch steel ball dropped twice from 20 feet did not crack the mat - a fracture test, not cosmetic immunity: Class 4 shingles still lose granules and take marks in real hail.
Many Texas insurers discount premiums for Class 4 shingles, and some pair the discount with a cosmetic-damage exclusion endorsement - so the same upgrade can lower the bill and narrow what a future hail claim covers.
Impact-resistant shingles are almost all architectural-grade: the laminated double layer is part of what absorbs the strike, so the Class 4 conversation usually starts by leaving 3-tab behind anyway.
The Class 4 test grades exactly one thing - whether the mat cracks - which is the same fracture a hail bruise is; the rating is best read as bruise resistance, not as a promise the roof will look untouched after a storm.
Related To Impact-Resistant Shingles
Read a Class 4 shingle's warranty before buying it for hail protection: manufacturers commonly limit or exclude hail damage from coverage on the very lines marketed for impact resistance - the rating speaks to insurers, not the warranty.
Class 4 impact-rated shingles are designed to raise the hail size at which the mat fractures, which is why the same storm can bruise one roof and leave its impact-rated neighbor largely intact.
Malarkey's shingles overview lists Vista AR, Legacy Scotchgard, and Windsor Scotchgard at a Class 4 impact rating and Highlander AR at Class 3, making impact resistance a lineup-wide trait rather than a single product's feature.
UL 2218 is the steel-ball drop standard behind the Class 3 and Class 4 labels that impact-resistant shingles carry into Texas insurance discount conversations.
The brand roster names who manufactures UL 2218 Class 4 lines, while the impact-resistant shingles concept covers what the classification means and how insurers treat it.
Questions about Impact-Resistant Shingles?
Zilker Roofing inspects before recommending. Honest assessment, no pressure.