Engineered Protection. Insurance-Recognized Performance

North Texas homes face relentless hail, high winds, and rising insurance premiums. DVZ Roofing offers two smart system options—Class 3 and Class 4—each built for durability, compliance, and long-term value.

Choosing the right roofing system can:

• Reduce storm-related damage and costly repairs
• Qualify for insurance discounts up to 35%
• Increase resale value and buyer confidence
• Deliver peace of mind with manufacturer-backed warranties

Class 3: Impact Resistance Withstands 1.75" steel/ice ball impacts from a height of 17'

Class 4: Impact Resistance Withstands 2" steel/ice ball impacts from a height of 20'

Nail Count per Shingle 4 nails (standard) 6 nails (required for warranty). Fastener Type Galvanized roofing nails Ring-shank nails recommended/required 

Warranty Coverage Basic manufacturer warranty 

Enhanced warranty + FORTIFIED eligibility

Class 3: Insurance Discount Up to 15% (COSMETIC DAMAGE WAIVER NOT NORMALLY INCLUDED)

Class 4: insurance Discount Up to 35% + deductible credits (COSMETIC WAIVER IS OFTEN INCLUDED - NOT COVERED)  

FORTIFIED Roof™ Eligible No Yes (with sealed deck + ring-shank)

 1] Malarkey: Industry leader in Class 4 impact resistance, mandatory ring-shank nails, FORTIFIED Roof™ compliance, and eco-friendly design. Their offset pattern is tight and staggered, reducing waste and improving wind uplift resistance.

2] GAF: Strong Class 4 options with Golden Pledge® warranty, flexible fastener types, and consistent offset pattern. Widely available and trusted by insurers.

3] CertainTeed: Excellent warranty structure (Integrity Roof System®), consistent offset pattern, and solid Class 4 performance. Slightly less aggressive on fastener mandates than Malarkey.

4] Owens Corning: Reliable Class 4 options, good offset pattern, and broad availability. Requires 6 nails for high-slope installs but doesn’t mandate ring-shank for Class 4.

5] IKO: Offers Class 4 shingles and ring-shank recommendations, but less consistent in warranty enforcement and offset pattern. Still a solid choice, but not as robust in high-wind or hail-prone zones.     

Laminated Asphalt Shingles – North Texas Region
All specifications below apply to laminated (architectural) asphalt shingles installed on residential structures in North Texas.

Malarkey: 8" 12" 4" 10" 6" 14" 8"   

GAF: 6" 12" 20" 26" 30" 18" 12"   

CertainTeed 6" 12" 20" 26" 30" 18" 12"   

Owens Corning 6" 12" 20" 26" 30" 18" 12"   

IKO: 6" 12" 20" 26" 30" 18" 12"    

Offsets are measured from the left rake and will repeat every 7 courses to maintain stagger and visual consistency.
 

Brand Class Rating Fastener Type Nail Count Notes     

Malarkey 

Class 4, 1¼" ring-shank nails (mandatory) 6 nails Required for Class 4 warranty and FORTIFIED Roof™ installs

GAF

Class 3 & 4 1¼" galvanized or stainless steel nails 4 nails (Class 3)
6 nails (Class 4) 6 nails required for Golden Pledge® warranty

CertainTeed

Class 3 & 4 1¼" galvanized nails 4 nails (Class 3)
6 nails (Class 4) 6 nails required for Integrity Roof System® compliance

Owens Corning

Class 3 & 4 1¼" galvanized roofing nails 4 nails (Class 3)
6 nails (Class 4) 6 nails required for slopes ≥ 7:12 or high-wind zones

IKO

Class 3 & 4 1¼" galvanized nails or ring-shank 4 nails (Class 3)
6 nails (Class 4) Ring-shank recommended for Class 4 and HVHZ

All fasteners must be corrosion-resistant galvanized or stainless steel. Ring-shank nails are required in coastal HVHZ zones and recommended for FORTIFIED Roof™ compliance.
 

Roof Pitch Fasteners per Shingle Nailing Pattern Description     

3:12 – 4:12 6 nails Two rows of 3 nails: 3/8" and 5/8" above exposure; 3" from ends   

5:12 – 7:12 4 nails (Class 3) 6 nails (Class 4) Single row: 3/8" above exposure; 6" apart; 3" from ends   

8:12 – 12:12 4 nails (Class 3) 6 nails (Class 4) Single row: 1" above exposure; 6" apart; 3" from ends   

13:12 – 18:12 6 nails Two rows of 3 nails: 3/8" and 5/8" above exposure; 3" from ends  

For steep-slope installs (≥ 10:12), toe boards, harnesses, and staging are required.
 

• Ice & Water Barrier (A rubberized membrane in the valleys)
• Synthetic Underlayment (Non-tear able synthetic material)
• Starter Shingles (Adds an asphalt adhesion to the first row of shingles)
• Impact-Rated Laminated Field Shingles (IR is selected)
• Hip & Ridge Cap (IR if selected)
• Manufacturer Warranty (Standard unless upgraded warranty is purchased)
• DVZ Precision Installation (Oversite from a DVZ professional)

All systems are installed to meet or exceed Texas building code and manufacturer warranty requirements.

System Type, Discount Range, Cosmetic Waiver, Deductible Credit

Class 3 upgrade from a class 2 (3-tab) can be up to 15%.   

Class 4 can be upwards of 25%-35% this is typically included on a wind and hail policy if the home is in a designated hail zone

DVZ Roofing partners with trusted suppliers to ensure timely access to all listed systems:

• ABC Supply
• Beacon Building Products
• Southern Shingles (SRS)
• Mueller Inc.

We don’t just install shingles—we engineer complete protection systems. Every DVZ roof is built with:

• Ethical Transparency
• Technical mastery in steep-pitch and complex installs
• Optional FORTIFIED Roof™ upgrades for sealed deck protection
• Long-term client support and documentation

Ready to upgrade your roof with confidence?
Let’s build something that lasts.