Flintlastic SA is a self-adhered low-slope roofing system developed by CertainTeed, designed for both residential and commercial applications. It offers a simplified, flame-free, and fume-free application process, making it a popular alternative to traditional multi-ply modified bitumen or single-ply roofing systems. The system is composed of various components, including cap sheets, base plies, interplies, and specialized accessories, all of which contribute to its speed, affordability, and durability. This article provides a detailed breakdown of the Flintlastic SA system components, their roles, and the general installation process based on the available technical documentation.
System Overview and Key Features
Flintlastic SA is a fully self-adhered low-slope roofing system that eliminates the need for torching, mopping, or squeegeeing during installation. The system's key differentiators include its speed of application, affordability, and safety profile. The product is particularly beneficial for residential and commercial flat or low-slope roofs, where aesthetics and energy efficiency are also important considerations.
One of the primary advantages of the Flintlastic SA system is its S.A.F.E. (Speed, Affordability, Fume & Flame Free, and Easy to Learn) approach. According to a third-party comparison commissioned by CertainTeed, the system can be installed faster than traditional multi-ply modified bitumen and single-ply systems. This efficiency is largely due to the pressure-sensitive adhesive technology used in the membranes, which allows for quick and secure adhesion without the need for additional tools or techniques.
Another notable feature is the availability of multiple cap sheet options. These include standard surfacing and highly reflective CoolStar surfacing. CoolStar variants are designed to reflect solar radiation, thereby reducing heat absorption and potentially lowering energy costs in buildings with black or dark-colored roofs. This is particularly relevant for homeowners seeking to improve the energy efficiency of their properties.
Components of the Flintlastic SA System
The Flintlastic SA system is composed of several key components, each serving a specific function within the overall roofing assembly. These components include base plies, interplies, cap sheets, and various accessories. A detailed review of each is provided below.
Base Plies
Base plies form the foundation of the Flintlastic SA system. They are responsible for adhering to the roof substrate and providing the base layer for the roofing system. Two primary base ply options are available:
Flintlastic SA NailBase: This option is used when mechanical attachment of the base sheet is preferred. It is suitable for applications where nailable roof decks, such as plywood, are present. The system includes optional insulation and is typically paired with a cap sheet for a 12- or 15-year warranty, depending on the configuration.
Flintlastic SA PlyBase: This is the standard self-adhered base or interply used in most Flintlastic SA installations. It offers a cost-effective solution for basic roofing needs and is recommended for applications where mechanical fastening is not required.
Interplies
Interplies are used in multi-ply systems to reinforce the roofing assembly. The interply provides additional strength and durability, helping to extend the system’s lifespan. The following interply is available:
- Flintlastic SA MidPly: This is a premium self-adhered interply that is utilized in systems where a 20- to 25-year warranty is desired. It offers enhanced performance and is recommended for high-traffic or high-exposure areas.
Cap Sheets
Cap sheets serve as the outermost layer of the roofing system. They are responsible for protecting the underlying plies from weathering, UV exposure, and mechanical damage. The available cap sheet options include:
Flintlastic SA Cap: This is the standard cap sheet used in most Flintlastic SA systems. It is available in 11 true-blend colors, allowing for aesthetic matching with existing roof shingles. It is particularly useful in residential applications where appearance is a priority.
Flintlastic SA Cap CoolStar: This variant includes highly reflective surfacing designed to reduce solar heat gain. It is ideal for energy-conscious applications and is available in the same color options as the standard cap sheet.
Flintlastic SA Cap FR: This option adds fire and impact resistance to the system, making it suitable for areas with higher fire risk or where additional durability is required.
Flintlastic SA Cap FR CoolStar: This is a combination of the fire-resistant and highly reflective properties. It is used in applications where both fire protection and solar reflectivity are important.
Accessories
A range of accessories is recommended or required to support the installation and performance of the Flintlastic SA system. These include:
FlintPrime Aerosol: A spray primer used for small detail areas such as edge metal and the tops of metal fasters. It ensures proper adhesion in critical areas.
FlintPrime QD: A substrate primer used when applying self-adhered base plies. It is particularly important in systems where a strong bond between the base sheet and the roof deck is necessary.
FlintBond Caulk: An SBS-modified adhesive used for watertight detail edges. It is recommended for sealing around penetrations and other vulnerable areas.
FlintBond Trowel: An SBS-modified adhesive used for granule overlap areas and penetration details. It ensures a watertight seal and enhances the system's durability.
These accessories are typically used in conjunction with the main system components to ensure a complete and watertight installation.
Installation Process and Best Practices
The installation of the Flintlastic SA system involves several key steps, each of which is critical to the system’s performance and longevity. While the system is designed to be user-friendly and easy to learn, it is still important to follow best practices to ensure a successful installation.
Step 1: Surface Preparation
Before beginning the installation, the roof deck must be properly prepared. This includes cleaning the surface to remove any debris, dust, or contaminants that could interfere with adhesion. The surface should be dry and free from oil or other substances that could reduce the effectiveness of the pressure-sensitive adhesive.
In some cases, a primer such as FlintPrime QD may be required to enhance adhesion, particularly when applying self-adhered base plies. This is especially important for systems that do not include mechanical fastening.
Step 2: Base Sheet Installation
The base sheet is the first layer applied in the Flintlastic SA system. Depending on the specific application, either Flintlastic SA NailBase or SA PlyBase is used. NailBase is typically used when mechanical attachment is preferred, while PlyBase is suitable for most self-adhered applications.
The base sheet is applied using the pressure-sensitive adhesive on the underside of the membrane. The installer should work in a methodical manner, unrolling the membrane and pressing it firmly into place to ensure full adhesion. Care should be taken to avoid wrinkles or bubbles, which could compromise the integrity of the system.
Step 3: Interply Installation (if applicable)
For multi-ply systems, an interply is added between the base sheet and the cap sheet. The interply is also applied using the pressure-sensitive adhesive, and it should be aligned precisely with the base sheet to ensure a seamless overlap. This step is particularly important in systems where a 20- to 25-year warranty is desired.
Step 4: Cap Sheet Installation
The cap sheet is the final layer of the system and is applied directly over the base and interply (if used). It is available in a variety of colors and surfacing options, including CoolStar for solar reflectivity. The cap sheet is also self-adhered, and it should be installed with care to ensure a smooth, even surface.
Once the cap sheet is in place, any seams or overlaps should be inspected for proper adhesion. In some cases, a seam roller or similar tool may be used to ensure full contact between the plies.
Step 5: Detailing and Sealing
After the main system is installed, attention should be given to detailing and sealing. This includes sealing around penetrations, flashing, and other vulnerable areas. Accessories such as FlintBond Caulk and FlintBond Trowel are used in these areas to create watertight seals.
FlintPrime Aerosol may also be used in small detail areas such as the tops of metal fasters and edge metal to ensure full adhesion and prevent water ingress.
Step 6: Final Inspection
Once the entire system is installed, a final inspection should be conducted to ensure that all components are properly adhered, and that there are no gaps, bubbles, or other issues that could affect the system’s performance. Any areas of concern should be addressed immediately to prevent future problems.
Warranty and Longevity
CertainTeed offers a range of warranty options for the Flintlastic SA system, depending on the configuration and components used. For example:
- A 12-year warranty is available for systems using Flintlastic SA NailBase and a cap sheet (with or without CoolStar surfacing).
- A 15-year warranty is available when an interply is added to the system.
- A 20- to 25-year warranty is available for systems using Flintlastic SA MidPly.
These warranties reflect the system's durability and performance under typical conditions. However, it is important to note that proper installation and maintenance are essential to achieving the full warranty coverage.
Conclusion
Flintlastic SA is a versatile and efficient self-adhered low-slope roofing system that offers a number of advantages over traditional roofing methods. Its S.A.F.E. (Speed, Affordability, Fume & Flame Free, and Easy to Learn) approach makes it a preferred choice for both residential and commercial applications. The system's components—including base plies, interplies, cap sheets, and accessories—are designed to work together to provide a durable, long-lasting, and aesthetically pleasing roofing solution.
Whether the goal is to improve energy efficiency, reduce installation time, or enhance the visual appeal of a roof, the Flintlastic SA system provides a reliable and effective option. By following the recommended installation steps and best practices, contractors can ensure a successful outcome and maximize the system’s performance and longevity.