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Project Case Study: GAF Timberline HDZ Charcoal Roof Replacement in Argyle, Texas

This case study details the complete roof replacement performed by Presidio Roofing Company for a residential property in the Harvest Community located in Argyle, Texas. The project involved removing  removing storm-damaged architectural shingles and installing GAF Timberline HDZ Class 3 Architectural Shingles to improve energy efficiency and wind resistance. The project was completed in April 2025 with a total coverage of 3,500 sq ft.

This roof replacement was challenging. This 2-story house had a fairly steep roof pitch of about 8/12 (or just under 34 degrees). The client did not wish to replace the gutters meaning they had to be carefully removed and salvaged. This job happened to be in one of the busiest walk to school neighborhoods in Denton County, so extra careful attention was put on safety. Lastly, everything required patience and timing to get the insurance claim approved.  The home had fundamental building level issues that could have been remedied sooner but would be very costly and could be fixed easier as part of a full roof replacement following a hail storm.

In This Case Study:

Video transcript and key highlights

Click to view video summary
0:00 - 0:04
Intro and drone fly over during shingle installation.
0:05 - 0:08
Drone fly over during tear off to decking.
0:09 - 0:11
Drone fly over during GAF Feltbuster install.
0:12 - 0:15
Drone 360 fly over during shingle install.
0:16 - End
Drone 360 fly over after shingle install is complete.

Project Snapshot: Key Specifications & Costs

Metric Project Detail
Project Type

Full Roof Replacement (Insurance Claim Restoration)

Location

Harvest Community, Argyle, TX 76226

Roof Size

3,500 Sq Ft (35 Squares)

Material Used

GAF Timberline HDZ Class 3 Shingle (Charcoal)

Duration

1 Day

Budget Range

$32,000 – $37,000

Warranty

GAF Golden Pledge Warranty With 25-Year Workmanship

Challenge 1: Leaking Roof Awaiting a Hail Storm to File a Claim

This roof has been developing leaks at various weak points for multiple years leading up to the replacement.  For at least 3 years we had been doing minor repairs and inspections, helping to buy the roof time until a hail storm hit.  The leaks were coming from fundamental building level issues that could be remedied but would be very costly and could be fixed easier as part of a full roof replacement.  This took a lot of patience because there had been hail storms very close to the home and the temptation was there to tell them to file a claim and see if it stuck but we always opt for patience and careful planning. 

The Solution: Patience, Experience & Our Expertise

Finally in Spring 2024 a hail storm hit that was enough to total the roof and we were able to guide them to a a full roof replacement.  This still required careful consideration, helping them file the claim and meeting the adjuster.  The damage was enough to get the roof bought but it was not catastrophic so we came to the insurance adjustment ready to advocate heavily to make sure the full roof replacement was approved.  In this case the insurance adjuster actually did not even give notice and 20 minutes before he was arriving he called the homeowner.  Luckily we are a local company and had a representative available to get there right away and meet him and advocate for the client.

Challenge 2: Keeping a Busy Family Neighborhood Safe During Install

This neighborhood is full of kids walking to school, it is one of the busiest walk to school neighborhoods in all of Denton county so when managing a roof replacement we need to be extra careful about falling debris, loose nails making it to the sidewalk or street, and other aspects of the build that could put a child at hazard if left to chance.

The Solution: Proper Protocols, Clear Barriers and an Emphasis on Safety

We set up the usual safety perimeter around the job with cones and tape.  We parked our vehicles in front of the job to help create further obstacles so little kids would not get too curious and walk close to the roof job.  We also had 2 project managers on site for 100% of the build to monitor both safety and quality control.   Especially in the morning and after school when lots of kids where on the sidewalk passing the build we were fully engaged with site protection and safety protocols.

Challenge 3: Reusage of the Old Gutters Already on the Home

This homeowner did not want to replace their gutters.  This is pretty common in Texas where a roof is damaged by hail and the gutters are also but the gutters are more light cosmetic damage than function damage like the roof.  It is common for homeowners to not be very concerned with their gutters and often will opt out of replacing them.  This is legal as long as the contractor does not invoice or represent to  the insurance as if the gutter work was completed.  But when not replacing gutters the roofing crew most be very careful not to damage them during the roof tear off and installation.

The Solution: Careful Attention to Detail and Planning Ahead

It is not always possible to replace a roof without damaging the gutters. For example, often times, to replace the drip edge on the roof eaves the gutters must come off as the gutter screws pass through the drip edge to anchor into the fascia board.  In this case the drip edge was not screwed in behind the gutters so we could complete a code compliant roof replacement which includes replacing the drip edge even with some gutters on the house.  We just had to be very careful to cover the gutters especially during the old roof removal portion of the job.  We will use tarps, wood boards, and other items to cover gutters that could be damaged during tear off.  We also work to make sure the existing roof is being removed only from certain parts of the roof where there are no gutters to damage.

The Result:

A beautiful roof properly installed with repurposed gutters and no injuries/incidents in the community. And an awesome warranty.

How to Maintain Your New GAF Timberline HDZ Class 3 Shingle Roof

Step 1
Visual Inspection After Storms

After any severe weather event, perform a ground-level inspection. Look for signs like dings in your gutters, tears in window screens, or shingles lying in the yard. Do not climb the roof yourself; call a professional if you suspect damage.

Step 2
Clear Debris from Valleys

Ensure that leaves and branches are cleared from roof valleys and gutters. Accumulated debris can trap moisture and lead to algae growth or water backing up under the shingles.

Step 3
Monitor for Granule Loss

Check your downspout splash blocks. If you see excessive accumulation of granules (the “sand” from the shingles), it may indicate that the roof is aging or has sustained new hail damage.

Author

About the Author

Nick lives in Denton, Texas with his wife and 2 children. After graduating from the University of Arizona and spending some time traveling the world he became intrigued by the roofing industry and decided to dive in and learn everything he could. Today, Nick is the co-owner at Presidio Roofing Company and uses his 15+ years of roofing experience to help push the company forward.

Certifications & Affiliations

GAF Certification #1140907
GAF Certification #1140907 Presidio Roofing RCAT Profile
Owens Corning Certification #223631
Owens Corning Certification #223631 Presidio Roofing Owens Corning Profile
RCAT License #100762
RCAT License #100762 Presidio Roofing GAF Profile
IBHS Fortified Roofing Contractor
IBHS Fortified Roofing Contractor Presidio Roofing Fortified Certified profile

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