The Atlas Pinnacle Pristine shingles are a premium roofing solution designed for durability, aesthetic appeal, and long-term performance. These shingles are marketed with features such as 3M™ Scotchgard™ protection, a range of architectural styles, and compatibility with multiple warranty programs. For residential roofers and DIY professionals, understanding the correct installation methodology is essential for ensuring compliance with manufacturer guidelines and maximizing the shingle's performance and warranty coverage.
This guide compiles key installation instructions and technical specifications from various sources, including official product documentation, technical blogs, and contractor insights. The information is structured to support both novice and experienced installers by covering preparation, installation best practices, and critical compliance points. All details are derived from the provided source data, ensuring accuracy and adherence to technical specifications.
Pre-Installation Requirements and Best Practices
Before installing Atlas Pinnacle Pristine shingles, several foundational steps must be followed to ensure a secure and long-lasting roof. These include proper underlayment, flashings, and starter courses, all of which are critical for protecting the roof structure and complying with manufacturer requirements for warranty eligibility.
Underlayment and Ice Dam Protection
The underlayment serves as the first line of defense against water intrusion, especially in areas prone to heavy snow or ice dams. According to the documentation, Atlas WeatherMaster® or equivalent products must be used to cover the decking. This underlayment should extend 24 inches beyond the interior warm wall line for ice dam protection and conform to ASTM D-1970 standards.
In severe icing areas, the underlayment must extend up to the highest expected water level from ice dams. For overhangs wider than 36 inches, horizontal lapping must be cemented or sealed, and a minimum of 12-inch end laps should also be sealed using asphalt plastic cement that meets ASTM D-4586 specifications.
Flashing Installation
Flashing is a critical component in directing water away from vulnerable roof areas such as valleys, chimneys, and skylights. The following steps should be followed:
- Valley Construction: Complete all valleys before laying the shingles. For open valleys, center a 36-inch ice and water product in the valley and apply a minimum 16-inch wide copper flashing, secured every 24 inches. The copper must overlap by at least 12 inches.
- Chalk Line Marking: Draw chalk lines 3 inches from the center line on each side of the valley. Shingles adjacent to these lines should be trimmed by cutting 2 inches diagonally off the upper corner to direct water into the valley.
- Sealing and Nailing: Apply a 3-inch wide band of asphalt plastic cement along the valley edges of the shingles and nail them no closer than 6 inches from the valley center line.
- Cap and Base Flashings: Use sheet metal for cap flashings and metal or mineral-surfaced roll roofing for base flashings at vertical surfaces such as chimneys and skylights. All flashing must be sealed with asphalt plastic cement.
These steps ensure that water is effectively directed away from the roof structure, minimizing the risk of leaks and damage. For detailed methods, refer to the ARMA Residential Asphalt Roofing Manual.
Installation Process and Technical Specifications
Once the underlayment and flashing are in place, the installation of Atlas Pinnacle Pristine shingles can begin. The following sections outline the key technical considerations, including starter courses, nailing patterns, and alignment techniques.
Starter Course and Seam Alignment
A starter course is essential for maintaining alignment and ensuring proper sealing of the first row of shingles. Atlas recommends the use of starter shingles for a system warranty. If only an out-of-box warranty is desired, three-tab shingles may be used, though starter shingles are still advised for optimal performance.
Shingle seams should be aligned toward the bottom edge of the roof. A minimum overlap of a quarter inch to 3/4 of an inch is necessary to ensure proper sealing and alignment. Nails should be placed above the seal to prevent damage and ensure durability.
Drip Edge and Plywood Considerations
- Drip Edge: If a drip edge is present, the shingles should be flush with the drip edge, with a quarter-inch overlap at the top for a natural overlap.
- Plywood Substrates: If the roof deck is made of plywood, ensure nails are at least a quarter inch off the sides for secure fastening.
Shingle Dimensions and Exposure
Atlas Pinnacle Pristine shingles are 42 inches wide and 14 inches in length, making them the largest on the market in the U.S.. These shingles are designed with a 6-inch exposure, which provides an aesthetically pleasing pattern and ensures adequate protection from weather elements.
The shingles are available in various color options, including weathered wood, shingle beige, pewter, and hearthstone gray, allowing homeowners to match their home's exterior design while maintaining durability and protection.
Warranty and Compliance Considerations
To ensure full warranty coverage and compliance with manufacturer guidelines, it is essential to follow the recommended installation procedures and use compatible components.
Warranty Programs
Atlas offers two primary warranty programs for the Pinnacle Pristine line:
- Signature Select Warranty: This system warranty is available when the shingles are installed as part of a complete Atlas Roofing System, including underlayment, ventilation, and other components. This warranty covers damage from wind, hail, and other environmental factors.
- Out-of-Box Warranty: This warranty is available for standalone shingle installations and provides a 15-year limited warranty. It does not include coverage for system-related failures unless all components are Atlas products.
To qualify for the Signature Select Warranty, it is necessary to use Atlas starter shingles and follow all installation guidelines provided in the manufacturer's documentation.
Compliance with Standards
All installation practices should align with the following industry standards:
- ASTM D-1970 for underlayment.
- ASTM D-4586 for asphalt plastic cement.
- ARMA (Asphalt Roofing Manufacturers' Association) standards for flashing and valley installation.
Compliance with these standards ensures that the roof is not only durable but also eligible for full warranty coverage.
Maintenance and Longevity
While Atlas Pinnacle Pristine shingles are designed for long-term durability, proper maintenance can further extend their lifespan and performance. The following practices are recommended:
- Inspect Flashing and Seals: Periodically check flashing and sealant integrity, especially after severe weather events.
- Clean Gutters and Drainage Systems: Ensure that gutters and downspouts are free of debris to prevent water buildup and potential damage to the roof structure.
- Monitor for Staining or Algae Growth: The 3M™ Scotchgard™ technology helps resist staining and algae growth, but periodic cleaning can enhance the aesthetic and functional longevity of the shingles.
By following these maintenance steps, homeowners can ensure that their Atlas Pinnacle Pristine shingles continue to provide both protection and curb appeal for years.
Conclusion
Atlas Pinnacle Pristine shingles represent a premium option for residential roofing applications, combining durability, aesthetic appeal, and warranty protection. Proper installation is critical for ensuring both the immediate performance and long-term viability of the roof. Key considerations include the use of appropriate underlayment, correct flashing techniques, alignment of shingle seams, and compliance with warranty-specific requirements.
By following the manufacturer's guidelines and leveraging the insights provided in technical resources such as the ARMA manual and Atlas documentation, installers can achieve a high-quality roof that meets both structural and aesthetic expectations. Whether for new construction or roof replacement, the Pinnacle Pristine line offers a reliable and attractive solution for U.S. homeowners seeking a durable and long-lasting roofing system.