Square Construction

Roofing Guide

Class 4 Impact Resistant Shingles

Texas hail country demands more than a standard shingle. Here's everything you need to know — including how to get an insurance discount for upgrading.

Class 4
Highest UL 2218 rating
May qualify
Premium discount — varies by carrier
2"
Steel ball test diameter
Up to 50yr
Manufacturer warranty (certified install)

What “Class 4” actually means

The UL 2218 standard tests roofing products by dropping a 2-inch steel ball from 20 feet. Class 4 shingles withstand that impact without cracking. Standard shingles don't.

Class 4 is the highest UL 2218 impact-resistance rating. It can reduce the likelihood of functional damage, but no asphalt shingle is hail-proof. Actual performance depends on hail size, wind speed, roof age, installation quality, and the specific product's construction.

The insurance discount

Impact-resistant roofing may qualify for a premium discount. Eligibility and savings vary by insurance company, policy, product, and required documentation. Confirm the amount and any related policy changes with your insurance agent before selecting a roof.

Ask your agent for the exact discount percentage for your policy
Get the manufacturer's UL 2218 Class 4 product certification
Submit to your carrier after installation — discount applies at renewal
Some carriers require a specific underlayment — we know which ones

Brands we install

Owens Corning Duration Storm
Class 4
Most widely installed in DFW. OC Preferred Contractor — unlocks extended warranty coverage.
TAMKO Heritage IR
Class 4
Strong performance, competitive pricing. TAMKO Edge network member. Popular in Austin.
CertainTeed Landmark ClimateFlex
Class 4
Premium aesthetics, excellent color retention in Texas sun.
Atlas Pinnacle Impact
Class 4
Atlas's impact-rated line. (Pinnacle Pristine is Class 3.)

Ready to upgrade?

We'll inspect your current roof, walk you through the right Class 4 product for your home, and handle the insurance discount documentation.

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Deep Dive
Class 3 vs Class 4: Full comparison guide →