Michigan is home to more freshwater shoreline than any other state in the continental United States. From Lake Michigan and Lake Huron to hundreds of inland lakes, docks and marinas across the state face some of the harshest environmental conditions in North America.
Ice, snow, UV exposure, fluctuating water levels, and constant moisture can quickly deteriorate traditional dock materials. That is why many marina owners, municipalities, contractors, and waterfront property owners are turning to FRP dock grating as a long-lasting alternative.
Wood has been the standard choice for dock surfaces for decades, but Michigan's climate presents several challenges:
Freeze-thaw cycles cause cracking and warping
Constant moisture leads to rot and mildew
Wet surfaces become slippery
Annual maintenance adds significant costs
Ice damage can shorten dock lifespan
Steel and aluminum docks solve some of these problems but introduce others, including corrosion, higher weight, and increased installation costs in many applications.
Michigan's waterfront structures need a decking solution designed for long-term exposure to water, weather, and heavy use.
FRP (Fiberglass Reinforced Plastic) grating is a high-strength composite material engineered for corrosive and wet environments. It combines fiberglass reinforcement with specialized resins to create a lightweight yet durable dock surface.
Unlike wood, FRP will not rot, splinter, or absorb water. Unlike steel, it will not rust or corrode. These characteristics have made FRP grating increasingly popular for marinas, fishing piers, boardwalks, and waterfront walkways throughout North America.
Exceptional Slip Resistance
Michigan docks are frequently exposed to rain, snow, ice, and algae growth. FRP grating can be manufactured with a gritted, slip-resistant walking surface that maintains traction in wet conditions. This helps improve safety for boaters, anglers, and pedestrians throughout the year.
Resistant to Rot, Rust, and Corrosion
One of the biggest advantages of FRP is its resistance to environmental deterioration. Fiberglass grating will not rust like steel or decay like wood, even when exposed to freshwater, saltwater, or de-icing chemicals.
Handles Michigan Winters
The combination of moisture, freezing temperatures, and ice movement can quickly damage traditional dock materials. A Michigan pier replacement project at Pentwater on Lake Michigan selected FRP grating because wood decking experienced recurring maintenance issues and storm damage. The replacement FRP grating provided improved durability and reduced maintenance requirements.
Low Maintenance
Property owners appreciate that FRP dock grating requires very little upkeep. There is no need for staining, sealing, painting, or treating the material to prevent rot. Regular cleaning is generally all that is required to maintain appearance and performance.
Lightweight and Easy to Install
FRP grating weighs significantly less than steel while maintaining excellent load-bearing capacity. The lighter weight can simplify transportation, handling, and installation on both new construction and dock renovation projects.
FRP dock grating is commonly used for:
Residential lakefront docks
Marina finger piers
Public fishing piers
Boat launch walkways
Municipal waterfront facilities
Boardwalks
Floating docks
Marina gangways
Waterfront observation decks
Whether the project is located on Lake Michigan, Lake Huron, Lake Superior, Lake Erie, or an inland lake, FRP grating provides a durable walking surface designed for waterfront environments.
We Ship to the following locations in Michigan:
Detroit
Grand Rapids
Warren
Sterling Heights
Ann Arbor
Lansing
Flint
Dearborn
Livonia
Troy
When evaluating dock materials, the lowest upfront cost is not always the most economical choice. Frequent repairs, replacement boards, coatings, and labor costs can significantly increase the lifetime expense of traditional dock decking.
FRP dock grating offers a longer service life, reduced maintenance requirements, improved safety, and superior performance in harsh marine and freshwater environments. For many Michigan dock owners, that translates into lower total ownership costs over the life of the structure.
Michigan's waterfronts demand materials that can withstand moisture, ice, UV exposure, and heavy use. FRP dock grating provides a durable, slip-resistant, and low-maintenance alternative to wood and steel, making it an excellent choice for marinas, municipalities, contractors, and waterfront property owners throughout the Great Lakes region.
Whether you are building a new dock, upgrading an aging marina, or replacing deteriorated wood decking, FRP grating delivers the long-term performance needed for Michigan's demanding waterfront conditions.
ADA-Friendly Options Available
Many public waterfront facilities require accessibility compliance. Certain FRP grating profiles feature smaller openings and smooth walking surfaces that can meet ADA requirements while maintaining drainage and light transmission. These products are commonly specified for municipal docks, public marinas, and pedestrian walkways.
Is FRP dock grating suitable for Michigan winters?
Yes. FRP grating is highly resistant to moisture, freeze-thaw cycles, and de-icing chemicals. It has been successfully used on Great Lakes waterfront structures where traditional wood decking experienced frequent maintenance issues.
Does fiberglass dock grating become slippery when wet?
No. Most marine-grade FRP grating includes a gritted, slip-resistant surface designed specifically for wet environments, improving traction during rain, snow, and icy conditions.
How long does FRP dock grating last?
Service life varies by application and environmental conditions, but FRP grating is designed for long-term performance and generally lasts significantly longer than untreated wood in waterfront environments because it does not rot, rust, or corrode.

Fiberglass Grating for Marine Applications