Choose the surface. Verify the whole dock.

Compare categories without hiding the tradeoffs.

Use this matrix to decide which documents and samples to request. It is an editorial screening framework, not a tested ranking. Performance varies within every category. Retain a promising material only when its exact product and assembly fit your project.

For hardwood, separate the decision to retain brown color from the decision to keep boards serviceable. A weathered appearance is not by itself a structural diagnosis. If you want consistent color, document the finish system and renewal tasks; if you accept natural weathering, cleaning and inspection still remain. Review Ipe for dock decking and the wood versus composite guide with the same exposure brief.

What the eight references actually help you decide.

Reviewed November 3, 2026. These are attributed summaries of the reviewed pages, not independent product tests. Obtain current technical instructions and warranty documents before procurement. A brand landing page is a useful starting point; written project acceptance resolves the details.

Separate splash, immersion and the structural system.

Write a water-exposure statement before requesting approval. “Near a lake” is too vague. State whether boards normally remain above water, receive occasional splash, are wetted by changing tides, flood repeatedly, or are expected to remain submerged. Include approximate duration and frequency where known, and identify whether the water is fresh, brackish or salt.

The Trex and Fiberon references use different water-contact language. That difference is a reason to check individual documentation, not a basis for assuming all composites behave alike. Ask suppliers to respond to the same exposure statement and identify any exclusions. Keep their response with the selected product number and document revision.

Also separate the surface from piles, framing, floats, anchors, rails, utilities and connections. Permission to use decking near water does not approve a submerged timber, a structural plastic member or a dock’s resistance to waves. Describe boat traffic, flood debris, winter ice and seasonal removal to the dock designer. Open panels may change how water passes through a surface, but do not substitute for an engineered attachment or storm plan.

Saltwater and mixed materials

Create a connection schedule showing board material, screw or clip, frame material, coatings and any required isolation. Ask the designer and hardware manufacturer to approve the combination for the exposure. Do not choose a screw by color or assume every stainless grade is interchangeable. Include cut edges, damaged coatings and locations that trap water in the inspection plan. Use the saltwater guide and fastener compatibility guide to organize that review.

Habitat, light and water movement

Before adopting flow-through panels, ask the authority what evidence it requires: panel open area, clear opening geometry, dock height, orientation, overall footprint or a site-specific shading analysis. Percentage open area describes a panel feature; it does not automatically describe light reaching vegetation. Record permit conditions alongside the layout and avoid substituting a generic vendor statement for a written determination.

Resolve the interfaces before ordering the surface.

Measure the frame, not just the deck area

For boards, record support centers, board direction, end-joint support, perimeter bearing and any diagonal runs. For panels, record clear bay dimensions, bearing ledges, support depth, corner shape and retaining locations. Measure several bays on an older dock; a nominally square opening may no longer be square. Identify obstructions and confirm that replacement pieces can actually be lowered into position.

Inspect framing and connections before hiding them under new material. Mark suspect areas for professional assessment and agree who authorizes repair. Re-decking can expose previously concealed damage; the purchase scope should explain how that work will be evaluated. Do not treat a surface replacement as evidence that the supporting structure is sound.

Support spacing is a product-specific decision

A span statement needs a product name, actual profile, load basis, orientation and installation conditions. Ask whether a diagonal layout, stairs, concentrated loads or commercial use changes the required support. Do not convert on-center spacing into a clear unsupported span without understanding the document’s definition. Obtain accepted details for butt joints, borders and unsupported edges.

Movement, spacing and attachment

Keep side gaps, end gaps and clearance at fixed objects separate on the detail sheet. For manufactured boards, follow the current installation instructions for temperature, movement and fastening. For wood, document moisture condition and the accepted spacing basis. A universal gap borrowed from another material is not a specification.

Confirm whether the proposed attachment allows individual replacement, what tool access it needs and how panels are restrained against displacement. Removable does not mean unsecured. If concealed clips are proposed, verify the exact groove and compatible hardware. Coordinate edges so screws, clips and panel rims do not create protrusions on the walking surface.

Floating docks: include surface weight

Request product weight in clearly defined units and conditions. Match the quantity to that basis: weight per linear foot requires linear feet; weight per complete panel requires panel count. Keep framing, hardware and other components separate. Have the dock designer assess the resulting change in dead load, flotation, stability, freeboard and transition behavior. A surface quantity calculator cannot approve reserve buoyancy.

Follow the replacement guide → · Prepare product-weight information → · Resolve board spacing →

Evaluate the dock as people will use it.

Wet traction and contamination

Request the basis of any slip-resistance claim: test method, wet or dry condition, surface direction and tested finish. A textured sample does not predict every contaminated condition. Algae, fish residue, mud and sunscreen change the practical cleaning problem. Ask the operator how quickly the surface can be cleaned and how access will be managed when conditions are unsafe.

Bare feet, heat and real samples

Compare the actual colors and textures at the site. Record sun exposure and shade rather than assigning one temperature to an entire material family. Use safe handling during sample evaluation; a hand check is not a standardized heat test. Evaluate splintering, exposed edges, grit and the comfort of openings separately. Manufacturer comparative heat claims need their conditions and limitations, particularly when comparing colors.

Accessibility is an assembly question

The U.S. Access Board standards address surface characteristics and accessible routes, with boating-facility provisions in sections 235 and 1003. Where applicable, section 302.3 generally limits openings to passage of a ½-inch sphere and addresses elongated-opening orientation. Review the full standard and applicable exceptions with the responsible designer.

Panel marketing alone does not establish an accessible route. Include joints, transitions, clear space, hardware protrusions and gangway behavior as water levels change. A product sold as accessible cannot resolve a steep or obstructed route by itself. Use the official ADA Standards for the project-specific review.

Compare the work you will own.

Replace the vague phrase “maintenance-free” with a written task list. Ask who removes debris, manages biological growth, checks hold-downs, repairs damaged edges and inspects framing. Identify the cleaning products, tools and pressures permitted by the selected manufacturer. Prevent wash debris and cleaners from entering the water where required by local rules and the approved work plan.

For wood finishes, separate appearance maintenance from routine surface care. For manufactured surfaces, find out whether abrasion, chemical spills or finish damage can be repaired and whether individual replacements will visually match older material. For removable panels, plan lifting, labeling and dry storage, with safe handling methods based on complete panel weight.

Compare complete project scopes

Send every supplier the same layout revision and scope. Separate surface material, compatible fasteners, panel clips, trim, framing modifications, demolition, disposal, access equipment, labor and delivery handling. Include any professional design and approval work. A board-only proposal and a complete retrofit are not directly comparable.

Compare ownership scenarios using your own documented assumptions. List cleaning frequency, finish renewal if selected, inspection labor, repair access and replacement-part strategy. Avoid a precise lifetime-cost winner when service life, site exposure and future labor are unknown. This reference does not display live prices or inventory; request a current project-specific response.

Read warranty terms as conditions

Record the named product, use, owner eligibility, exclusions, remedies, labor coverage if any, claim procedure and required records. Check marine exposure and commercial use explicitly. A limited warranty period is not a forecast of service life. Save installation photographs, lot or product labels, invoices and the instructions used, so future maintenance and claims have a clear basis.

Make sustainability claims useful

Recycled content and wood-free composition describe different attributes. Neither alone establishes total environmental impact or shoreline acceptance. Ask for product-specific documentation and consider repairability, offcuts, local disposal routes and removal at end of use. Do not imply a recycling program is available locally without checking the receiving facility.

Three project situations, three different first questions.

Answers to common questions

From product benefits to a usable decision process.

The eight references cover complementary ground: board technologies, modular panels, moisture exposure, comfort, texture, colors, recycled content, warranty resources, samples and purchasing paths. The panel catalogs also reveal fit, trim and retention requirements that broad material comparisons often overlook.

Across the reviewed landing pages, the practical information is fragmented. A reader still needs to connect exposure permissions, product-specific span conditions, weight changes, hardware interfaces, accessibility, habitat requirements, maintenance tasks and comparable procurement scopes. These gaps concern the supplied pages; their technical libraries may provide additional details.

This guide brings those questions together without converting advertising into independent evidence. It preserves each reference’s useful angle, distinguishes board products from complete dock systems, and gives readers a repeatable workflow. Numeric performance claims remain attributed and product-specific; no universal winner or unsupported service-life claim is assigned.