Bert Roofing holds preferred contractor status with GAF, Owens Corning, and CertainTeed simultaneously. That triple certification is unusual in the industry, and it gives us a unique perspective because we install all three product lines regularly. We put together an honest comparison to help you choose.
GAF Timberline HDZ
GAF is America's largest shingle manufacturer, and the Timberline HDZ is the best selling shingle in North America. Key features include LayerLock technology (which bonds the shingle layers together for superior wind resistance rated to 130 mph), StainGuard Plus algae protection (important in Texas humidity), and a clean, consistent appearance.
The HDZ comes with a lifetime limited warranty when installed by a certified contractor. GAF also offers the Golden Pledge warranty for preferred contractors like Bert Roofing, which adds 25 years of workmanship coverage.
For impact resistance, the GAF Timberline AS II is the Class 4 rated version.
Owens Corning Duration
Owens Corning Duration shingles feature the patented SureNail technology strip, a tough fabric band woven into the shingle that provides a visible nailing zone and superior fastener holding power. In a wind test, the nails pull through the shingle before the shingle tears away from the nail. That matters in Texas wind events.
Duration shingles are available in a wide range of colors and come with a lifetime limited warranty. The Duration Storm is the Class 4 impact resistant version.
Owens Corning also offers the TruDefinition Duration Flex shingles, which use an SBS modified asphalt for enhanced flexibility and impact resistance even in cold weather.
CertainTeed Landmark
CertainTeed Landmark shingles are known for their dual layered fiber glass mat construction and the widest color palette in the industry. If aesthetics and color matching are priorities, CertainTeed typically offers the most options.
The newer CertainTeed ClimateFlex line is particularly interesting for Texas homeowners. It is engineered for extreme weather variability (heat, cold, hail) and carries a Class 4 impact resistance rating.
CertainTeed offers a lifetime limited warranty, and their SureStart warranty covers 100% of material and labor costs in the early years.
How They Compare for Dallas
All three manufacturers produce excellent products. For DFW specifically, this is how we think about the choice:
For maximum wind resistance, GAF Timberline HDZ with LayerLock technology has an edge. For hail prone areas (which is most of DFW), any of the Class 4 options will perform well. For color selection and aesthetics, CertainTeed Landmark offers the most variety. For proven fastener performance, Owens Corning SureNail technology is best in class.
Our Honest Advice
The most important factor is not which shingle brand you choose. It is the quality of installation. A premium shingle installed incorrectly will fail faster than a standard shingle installed by a certified professional following manufacturer specifications.
That is why manufacturer certifications matter. As a preferred contractor for all three, Bert Roofing installs every product according to the manufacturer's exact specifications, which activates the full warranty protection.
Call us at 214-321-9341 and we will help you choose the right shingle for your home and budget.