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High-Quality Polyethylene Floating Docks

PolyDock is the floating dock system built to perform on any shoreline.

PolyDock is a modular, rotationally molded polyethylene floating dock system designed for residential, commercial and municipal waterfronts. Choose from six section sizes and combine them with compatible anchoring, ramps, gangways, accessories and PWC ports to create a system suited to your shoreline.

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PolyDock modular floating dock system configured around a covered boat lift
Purpose-Built From the Inside Out The walking surface, flotation and structural support are molded into each PolyDock section.

Why PolyDock?

Engineered Into Every Section.

PolyDock combines a molded walking surface and flotation structure in one durable polyethylene section. Each detail is designed to support stability, drainage, seasonal use and straightforward waterfront maintenance.

One-Piece Molded Construction The deck surface and flotation structure are formed as one rotationally molded polyethylene section.
16" Section Height All primary PolyDock section sizes share a consistent 16-inch molded height.
Textured Herringbone Surface The molded brick pattern and shot-peen texture provide drainage and added slip resistance.
Foam-Free Hollow Flotation Each section uses a hollow, single-cavity structure rather than separate foam-filled flotation.
UV-8 UV Protection The polyethylene material includes a UV inhibitor to help protect the molded section from sunlight.
Vented Hydrophobic Plug A hydrophobic vent helps manage internal air pressure and reduce ballooning of the section.
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At a Glance: Why PolyDock

Get the dock system designed for everyday enjoyment and long-term performance:

  • Slip-Resistant & Barefoot Safe – Comfortable, cool-to-the-touch brick pattern surface.

  • Saltwater-Ready HDPE – Rotationally molded polyethylene resists UV damage, corrosion, and weathering.

  • Stable Underfoot – Recessed pockets create a suction effect for a firm, stable walking feel.

  • Virtually Maintenance-Free – No staining, sealing, splinters, or board replacements.

  • Modular & Flexible – Build straight, T-, L-, U-shaped, or custom layouts — expand anytime.

  • Eco-Friendly Design – Foam-free flotation, minimal shoreline disruption, long service life.

Built for Your Waterfront

More than a dock — it’s a smarter way to enjoy the water.

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Residential

Create a safe, attractive dock for swimming, boating, or relaxing at the cabin.

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Commercial & Resorts

Durable, low-maintenance systems that reduce downtime and give guests a premium waterfront experience.

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Municipal

Rugged docks for public access with ADA-friendly options and long-term reliability.

Configurations & Sizes

From a compact fishing platform to an expansive entertainment-ready system, PolyDock adapts to your shoreline.

Popular Layouts:

  • Straight Dock – Simple access with room to grow

  • T-Shape – Perfect for fishing or adding a kayak launch

  • L-Shape – More waterfront space plus a protected slip

  • U-Shape – Ideal for multiple watercraft and protection from boat traffic

“Our PolyDock is the best investment we’ve made for the cabin. It’s stable, easy to clean, and still looks brand new after three seasons.” – Mark H., Lake Wisconsin

Configurations & Sizes

Choose the Sections That Fit.

Six molded section options make it possible to build narrow access routes, broad platforms, turns and larger waterfront layouts. Combine section sizes to match the available space, intended use and required capacity.

01 / Section 3 × 10 PolyDock Section
Dimensions
123.7" × 36.4"
Section Height
16.0"
Actual Weight
200 lbs.
Section Capacity
1,875 lbs.
02 / Section 4 × 6 PolyDock Section
Dimensions
72.7" × 50.9"
Section Height
16.0"
Actual Weight
160 lbs.
Section Capacity
1,550 lbs.
03 / Section 4 × 10 PolyDock Section
Dimensions
123.7" × 50.9"
Section Height
16.0"
Actual Weight
265 lbs.
Section Capacity
2,625 lbs.
04 / Section 5 × 10 PolyDock Section
Dimensions
123.7" × 65.5"
Section Height
16.0"
Actual Weight
340 lbs.
Section Capacity
3,375 lbs.
05 / Section 6 × 8 PolyDock Section
Dimensions
101.7" × 72.7"
Section Height
16.0"
Actual Weight
330 lbs.
Section Capacity
3,075 lbs.
06 / Corner 4' Corner Section
Footprint
50.5" × 50.5" × 71.48"
Section Height
16.0"
Actual Weight
110 lbs.
Section Capacity
225 lbs.

Technical Construction

Each section combines a molded walking surface and hollow flotation structure. Product selection, connection hardware and anchoring should be reviewed as part of the complete waterfront system.

Polyethylene Molded Material Rotationally molded polyethylene with an integrated walking surface and flotation structure.
0.250" Nominal Wall The published nominal wall thickness is one-quarter inch, subject to normal molding tolerances.
Herringbone Walking Surface Molded brick pattern, drainage gaps and a textured finish support comfortable waterfront use.
Hydrophobic Section Vent The vent plug helps manage internal air pressure within the hollow molded section.

Published dimensions and weights are approximate. Actual measurements may vary slightly because of normal tolerances in the rotational-molding process. Final system capacity also depends on configuration, connections, anchoring and site conditions.

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Technical Details

Each PolyDock modular floating dock section consists of a polyethylene single cavity, hollow, non-foam-filled float structure that consists of an integrated deck surface and flotation. The deck surface features a herringbone brick pattern, the spaces between each molded brick are no greater than 3/8″ wide and 1/2″ deep and allow for water drainage from the deck surface. Each brick in the herringbone pattern is approximate 4″ x 8″ except where the full brick pattern is not feasible as part of the pattern. Dock sections have a nominal wall thickness of .250 inches. Due to manufacturing tolerances in the rotational molding process, actual weights and dimensions may vary slightly from those listed.

Material Construction

The Polyethylene material shall meet the following properties: 1. 100% Polyethylene. 2. Has an ultraviolet inhibitor (UV-8) to protect from the sun. 3. The Polyethylene has tensile yield strength of 3,410 psi as per ASTM 638. 4. The Polyethylene has a low temperature impact of 160 ft-lbs (foot pounds) as per the ARM test method (Association of Rotational Molding) The ARM test method has been used since 1995 when the ASTM D3029 was made obsolete.

General Features

  • Surface: The deck surface has a herringbone brick pattern. The gaps between bricks are no greater than 3/8” wide and 1/2” deep. The gaps are provided for water drainage from the deck surface. The bricks are approximately 4” x 8”. The surface also has a 550 shotpeen finish to provide added anti-slip to the deck surface.

  • Nominal Wall Thickness: .250 inches

  • Freeboard: Freeboard under dead load shall be 14.50 inches +/- 1”. Freeboard under dead load plus 30 pounds per square foot shall not be less than 8 inches.

  • Connection: Lightweight aluminum connectors and stainless/brass hardware

  • Inserts: Inserts are 3/8” blind brass inserts spaced 1.75”. These are intended for use with 8” poly cleats

  • Venting: All POLYDOCK sections have a hydrophobic vent plug to eliminate ballooning of the dock.

  • Cross Section Detail: Dock sections have a nominal wall thickness of .25 inches.

Designed for Real Conditions

Built Around Real Waterfront Challenges.

Every shoreline brings different water levels, bottom conditions, traffic and seasonal demands. PolyDock combines modular sections with multiple connection and anchoring options so the complete system can be planned around the site.

01
Waterfront Challenge Changing Water Levels
PolyDock Approach

A Floating System That Moves With the Water

Floating dock sections rise and fall with changing water levels while the selected anchoring system helps maintain the dock’s position.

02
Waterfront Challenge Deep or Difficult Bottoms
PolyDock Approach

Multiple Anchoring Options

Pipe brackets, pile hoops, chain anchoring and stiff-arm systems provide options for varied depths, bottom conditions and shoreline restrictions.

03
Waterfront Challenge Changing Layout Needs
PolyDock Approach

Modular Sections That Can Evolve

Sections can be combined into straight, L-shaped, T-shaped, U-shaped and platform layouts, then expanded or reconfigured as waterfront needs change.

04
Waterfront Challenge Wet Foot Traffic
PolyDock Approach

A Textured Herringbone Surface

The molded walking surface includes a herringbone pattern and textured finish designed to support drainage and add slip resistance.

05
Waterfront Challenge Seasonal Cleanup
PolyDock Approach

Low-Maintenance Molded Surfaces

Polyethylene sections can be cleaned without the routine staining, sealing or refinishing associated with many traditional dock surfaces.

06
Waterfront Challenge Protected Saltwater Use
PolyDock Approach

Site-Appropriate Hardware and Protection

Approved protected saltwater installations can be configured with appropriate anchoring, hardware, corrosion protection and ongoing inspection.

The right system starts with the right site plan. Work with a PolyDock dealer to review water depth, shoreline conditions, anchoring and intended use.
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PolyDock FAQs

PolyDock sections are manufactured from rotationally molded polyethylene with an integrated walking surface and hollow flotation structure. The material includes a UV inhibitor for outdoor waterfront use.

PolyDock is available in 3-by-10, 4-by-6, 4-by-10, 5-by-10 and 6-by-8-foot nominal sections, plus a 4-foot corner section. Sections can be combined to create straight, L-shaped, T-shaped, U-shaped and platform configurations.

No. The molded sections are 16 inches high. Actual freeboard—the distance from the waterline to the walking surface—changes with loading and system conditions.

PolyDock can be used in freshwater and approved protected saltwater applications. Saltwater installations require appropriate anchoring, hardware, corrosion protection and ongoing inspection.

Available approaches include pipe brackets, pile hoops, chain anchoring and stiff arms. The correct method depends on water depth, bottom conditions, water movement and shoreline restrictions.

Some smaller systems may be suitable for homeowner assembly. Initial layout, connection and anchoring requirements should be reviewed with trained personnel or an authorized PolyDock dealer.

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