Fiber reinforced polymer (FRP) decking has emerged as a versatile and durable alternative to traditional materials in construction projects. These decks offer exceptional strength-to-weight ratios, corrosion resistance, and long-term durability. However, to further enhance their performance and extend their lifespan, it is crucial to consider the wearing surfaces applied to FRP decks. In this blog post, we will explore the two primary types of wearing surfaces used on FRP decks, namely grit-filled coatings and broadcast systems, and discuss their estimated longevity based on anticipated usage.
Grit-Filled Coatings: Easy Application, Limited Longevity
Grit-filled coatings are a popular choice due to their ease of application and affordability, typically ranging from $3 to $6 per square foot. These coatings consist of a paint or resin system mixed with fine aggregate particles such as sand or aluminum oxide. The grit particles provide texture and increase the slip resistance of the deck surface. The longevity of these coatings is based on the time it takes to “knock” off the particles and less to do with wearing through the particles.
While grit-filled coatings offer immediate benefits and cost advantages, their longevity is relatively limited. In high traffic urban areas, where the decks are subjected to constant use and abrasion, these coatings typically last around 5 years. Factors such as weather conditions, maintenance practices, and the quality of the coating can influence the exact lifespan. However, if the anticipated usage is not heavy and the budget is a primary concern, grit-filled coatings can still be a viable option.
Broadcast Systems: Superior Performance, Extended Lifespan
For high traffic urban environments where longevity is a top priority, broadcast systems are the recommended choice. Although they come at a higher cost, typically ranging from $5 to $15 per square foot, the superior performance and extended lifespan make them a worthwhile investment. Broadcast systems consist of a resin matrix applied to the FRP deck, followed by the broadcast of aggregate materials such as quartz or colored flakes onto the wet surface. Finally, a topcoat is applied to seal the surface and provide additional protection. Since these coatings have the wear particles encased in the polymer the quartz or aluminum oxide particles are forced to wear instead of being “knocked” free as in the case of the grit based systems.
The aggregate materials in broadcast systems create a robust, wear-resistant surface that can withstand heavy usage and harsh conditions. With proper installation and maintenance, broadcast systems on FRP decks can last between 15 to 30 years in high traffic environments. This remarkable durability significantly reduces the need for frequent resurfacing or repairs, leading to long-term cost savings and minimized disruptions in urban areas.
At Axcess Infrastructure, we strongly advocate for the use of broadcast systems in high traffic urban environments. The initial higher cost is justified by the substantial increase in lifespan and performance, ensuring a reliable and safe deck surface for decades to come. Additionally, the tailorable slip resistance provided by varying the particle size in broadcast systems contributes to improved pedestrian safety, making them an ideal choice for public spaces and commercial applications.
Conclusion
When it comes to maximizing the longevity and performance of fiber reinforced polymer decks, choosing the right wearing surfaces is paramount. While grit-filled coatings offer affordability and ease of application, they have a shorter lifespan of around 5 years in high traffic urban environments. On the other hand, broadcast systems provide superior performance and durability, lasting between 15 to 30 years when properly installed and maintained.
Considering the anticipated usage and budget constraints, it is crucial to assess the specific requirements of each project before making a decision. However, for high traffic urban environments where long-term reliability is a priority, Axcess Infrastructure highly recommends the use of broadcast systems on FRP decks. By investing in these superior wearing surfaces, construction professionals can ensure safer, longer-lasting, and cost-effective solutions for urban infrastructure projects.