GAF Timberline HDZ® & UHDZ® 

If you’re considering GAF roofing shingles for your home, you’re looking at one of the most trusted names in the industry. We install GAF Timberline HDZ® and UHDZ® shingles, two high-performance options designed to handle New Hampshire weather while delivering strong curb appeal.

Take a look below to explore the benefits, see real projects, and browse color options to find the right fit for your home.

Get a FREE Quote!
Get a FREE Quote!

Why Homeowners Choose GAF

GAF is one of the leading manufacturers in the roofing industry, known for combining innovative technology with long-term performance. Homeowners across New Hampshire choose GAF because it offers reliable protection, strong warranties, and a wide range of styles to match any home.

Key Benefits of HDZ® & UHDZ® Shingles:

  • Algae Protection

    Helps prevent those dark streaks you often see on roofs, keeping your home looking clean and well-maintained over time.

  • Enhanced Curb Appeal

    Dimensional shingles add depth and definition, giving your home a more polished, updated look from every angle.

  • Range of Color Options

    A wide range of colors makes it easy to find a style that complements your siding, trim, and overall home design.

  • Strong Warranty Coverage

    Backed by industry-leading warranties, giving you long-term protection and peace of mind with your investment.

  • Wind Resistance

    Designed to stay in place, even during strong New Hampshire wind and storms, so you can feel confident in your roof year-round.

What’s the Difference?

At Professional Roofing Co., we install both Timberline HDZ® and Timberline UHDZ® shingles, giving homeowners the flexibility to choose between a highly reliable architectural shingle and a more premium, high-definition option.

  • Timberline HDZ®

    A proven, high-performance architectural shingle with excellent durability, algae resistance, and strong warranty options.

  • Timberline UHDZ®

    A premium upgrade featuring enhanced thickness, deeper shadow lines, and higher impact resistance for added durability and curb appeal.

Performance & Technology Highlights

  • Silver Pledge® Limited Warranty

    Provides extended coverage when installed as a complete GAF roofing system, including material defects and workmanship coverage backed by GAF

  • GAF Certified Plus™ Contractor

    An elite certification earned by top roofing contractors, allowing access to premium warranties and ensuring high-quality installation.

  • StainGuard Plus™ Algae Protection

    Helps protect against blue-green algae discoloration, keeping your roof looking clean over time.

  • WindProven™ Limited Wind Warranty

    No maximum wind speed limitation when installed as part of a full GAF roofing system.

  • UltraMat™ Technology

    Only for UHDZ. Reinforces the shingle at its core and provides higher impact resistance (Class 4 rating).

  • Dual Shadow Line

    Only for UHDZ. Creates a deeper dimension and a more dramatic, high-end look

Look at other GAF jobs we’ve done

  • Barrington, NH

  • dover, nh

  • dover, nh

  • Dover, NH

  • dover, nh

  • madbury, nh

  • Dover, NH

  • Portsmouth, NH

GAF Timberline HDZ®

  • Shingle Swatch GAF HDZ Charcoal

    Charcoal

  • Shingle Swatch GAF HDZ Pewter Gray

    Pewter Gray

  • Shingle Swatch GAF HDZ Fox Hollow Gray

    Fox Hollow Gray

  • Shingle Swatch GAF HDZ Slate

    Slate

  • Shingle Swatch GAF HDZ Williamsburg Slate

    Williamsburg Slate

  • Shingle Swatch GAF HDZ Weathered Wood

    Weathered Wood

  • Shingle Swatch GAF HDZ Shakewood

    Shakewood

  • Shingle Swatch GAF HDZ Mission Brown

    Mission Brown

  • Shingle Swatch GAF HDZ Hickory

    Hickory

  • Shingle Swatch GAF HDZ Barkwood

    Barkwood

See the UHDZ® Difference

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See the UHDZ® Difference ↓

GAF Timberline UHDZ®

  • Shingle Swatch GAF HDZ Charcoal

    Charcoal

  • Shingle Swatch GAF HDZ Pewter Gray

    Pewter Gray

  • Shingle Swatch GAF HDZ Fox Hollow Gray

    Slate

  • Shingle Swatch GAF HDZ Slate

    Barkwood

  • Shingle Swatch GAF HDZ Weathered Wood

    WeatheredWood

  • Shingle Swatch GAF HDZ Shakewood

    Shakewood

Is GAF the Right Roofing System for Your Home?

Not sure if HDZ® or UHDZ® is the right choice? That’s where we come in.

At Professional Roofing Co., we’ll walk you through the differences, help you compare colors, and guide you toward the right roofing system for your home and your long-term goals, all without any pressure.

They’re especially ideal for homeowners who want:

  • A reliable, long-lasting roofing system.

  • Strong protection against New England weather

  • A clean, dimensional look with added curb appeal.

  • To upgrade to a more premium architectural style.

Get Your FREE Roofing Estimate here

why homeowners choose prc?

  • Full Roof Replacements Done right

    We specialize in full roof replacements using high-quality materials and proven installation methods built for New Hampshire weather.

  • Customer-First Roofing Experience

    As a trusted Dover NH roofing company, everything we do is built around your experience. From your first call to final cleanup, we prioritize communication, transparency, and making the process stress-free.

  • Detailed Proposals Without Sales Pressure

    We believe homeowners deserve clarity, not confusion. Our roofing proposals clearly outline materials, scope, and pricing, so you can confidently choose the right roof replacement without feeling pushed.

  • Fast Turnaround on Roofing Estimates

    Need answers quickly? We provide fast, accurate roofing estimates so you can plan your roof replacement without delays, especially important during New Hampshire’s short roofing seasons.

  • Respectful, Professional Roofing Crews

    Our crews treat your home like it’s their own. As a leading roofing contractor in NH, we show up on time, communicate clearly, and ensure your property is protected throughout the entire project.

  • Clean Job Sites, Every Time

    A roof replacement shouldn’t leave a mess behind. We go the extra mile to leave your property cleaner than we found it, so you can enjoy your new roof without the stress of cleanup.

Let's Get Started!