Pressure-treated wood is generally the lower-cost traditional starting point, composite trades a higher initial price for reduced routine refinishing, and PVC uses fully synthetic board construction and commonly sits toward the premium end of the market.

Whichever material you choose, the finished surface depends on coordinating the exact board profile with joist spacing, layout, gapping, fastening, borders, fascia, and the manufacturer’s current installation requirements.

Choosing a surface? Start with Decking Materials. Already chose the boards? Move to the Deck Board Layout Planner. Ready to install? Use How to Install Composite Decking.

You do not need to work through every decking guide on this site. Start with the decision directly in front of you.

Material choice affects upfront cost, maintenance, appearance, installation, heat, board profiles, fastening options, and long-term ownership.

There is no single decking material that is best for every project. The useful comparison is which material best fits your budget, maintenance tolerance, climate, appearance goals, framing, and expected ownership horizon.

Choose Based on What Matters Most

Treat this as a starting framework, not a universal ranking. Product quality, climate, installation details, appearance, availability, and total project cost can change which material makes the most sense.

Board length is only one decking dimension. Width, thickness, edge profile, and available lengths can change the layout, fastening system, transitions, stair details, border design, and material quantities.

Deck Board Anatomy

A deck-board layout is more than a board-count calculation. The layout determines where seams occur, how borders meet the field boards, whether a breaker board is useful, what happens at the final row, and where extra framing support may be needed.

Board Direction Has to Work With the Framing

Deck boards generally span across their supporting joists. That makes board direction a surface-design decision with framing consequences. Diagonal layouts, picture-frame borders, breaker boards, and other patterns may require different support or closer joist spacing under the decking manufacturer’s instructions.

Work through the surface in this order:

Square Footage Is Not the Final Order Quantity

Deck area tells you how much surface exists. The board layout tells you what to order. Final quantities can change with actual board width, required gaps, available board lengths, board direction, seams, picture-frame borders, breaker boards, stairs, cutoffs, and waste.

Board spacing affects drainage, debris movement, appearance, fastening, and the ability of the decking system to accommodate material movement.

Two different gaps must be considered:

Wood and manufactured decking do not behave identically. Composite and PVC products can also have product-specific installation requirements.

Fastening should be planned with the board profile and surface layout—not chosen after the boards are already placed.

A decking system may use face fasteners, hidden clips, plugs, or a combination of methods depending on the product and location. Field boards, borders, stairs, fascia, and repair locations may not all use the same fastening detail.

Once the material and layout are established, installation becomes a sequence of coordinated details rather than simply fastening boards to joists.

The exact sequence can vary with the board system and layout, but planning the border, field boards, breaker boards, stairs, and fascia before installation reduces the chance of reaching an edge condition that the framing does not support.

Composite decking includes different board constructions, product tiers, profiles, colors, warranties, and price points. Narrow the decision in stages instead of comparing individual collections at random.

The buying decision does not end with brand and price. Color, sun exposure, surface temperature, maintenance, scratching, staining, movement, and long-term appearance can all affect how satisfied you are with the finished deck.

Decking cost depends on more than the price of the boards. Product tier, board profile, waste, fasteners, borders, fascia, stairs, demolition, framing corrections, and labor can all affect the installed surface cost.

Use square-foot pricing for early comparison, then move to a project-specific estimate once the material, layout, railing, stairs, and structural scope are known.

The decking surface and structural framing are separate systems, but they cannot be planned independently.

Before installing the boards, verify that the framing supports the selected decking product and surface layout. Important checks can include joist spacing, blocking, picture-frame support, breaker-board support, stair framing, and the condition of an existing frame.

Manufacturer installation documentation should be part of that check. For example, TimberTech’s installation resources include guidance for joist blocking and spacing, picture framing, fasteners, fascia, composite decking, and PVC decking.

Resurfacing can preserve useful framing while replacing a worn deck surface, but the condition and geometry of the existing structure matter.

Before ordering new boards, inspect the framing and verify that the new decking is compatible with the existing joist spacing, layout, edge support, stair framing, and fastening plan.

Product-specific decking requirements can change by manufacturer, collection, board profile, and installation condition. The Backyard Standard uses manufacturer documentation as a primary reference for product-specific installation details and recommends checking the current instructions for the exact board and fastening system before installation.

• Trex Resource Center & Decking Installation Guides
• TimberTech Installation Guides

Last reviewed: September 2026

What is the best decking material?

There is no single best material for every deck. Pressure-treated wood can minimize initial cost, natural wood offers a traditional appearance, composite reduces routine refinishing, PVC provides fully synthetic construction, and aluminum serves more specialized applications. Compare the material to your budget, climate, maintenance tolerance, design priorities, and project requirements.

Is composite decking better than wood?

Composite generally requires less routine maintenance than wood, while wood can cost less initially and provides a natural material and appearance. The better choice depends on the specific products being compared and the homeowner’s priorities.

How far apart should deck boards be?

Deck-board spacing depends on the material and installation conditions. Wood spacing can be affected by moisture condition, while composite and PVC products may have manufacturer-specific side-to-side and end-gap requirements. Use the requirements for the exact product rather than assuming one gap applies to every deck.

Should deck boards run parallel or perpendicular to the house?

Board direction should be chosen with the joist direction, deck geometry, visual layout, available board lengths, borders, seams, drainage details, and required support in mind. Decking generally spans across its supporting joists, so a preferred surface direction may require the framing layout to be planned accordingly.

Do composite deck boards need gaps?

Composite decking systems typically require spacing between boards and may require specific end or abutment clearances depending on the product and installation conditions. Follow the current installation instructions for the exact board.

Can I install composite decking over an existing deck frame?

Potentially, but the existing frame should be evaluated before resurfacing. Check structural condition, joist spacing, flatness, blocking, stair framing, edge support, flashing and water-management details, and compatibility with the selected decking system.

Should I use grooved or square-edge deck boards?

Grooved boards are commonly used with compatible hidden-fastener systems in the field of the deck. Square-edge boards are often useful at borders, stairs, exposed edges, and locations where a groove would remain visible. Many layouts use both profiles.

Are hidden deck fasteners worth it?

Hidden fasteners can create a cleaner surface by reducing visible face fasteners, but the system must be compatible with the decking and installation. Consider installation speed, repairability, board profile, spacing, perimeter details, and manufacturer requirements before choosing a system.

How many deck boards do I need?

Board quantity depends on the deck dimensions, actual board width, spacing, board direction, available lengths, borders, breaker boards, stairs, cuts, and waste. Plan the surface layout before treating square footage alone as the final material quantity.

Does picture framing a deck require extra framing?

It often requires additional support beneath border boards, field-board ends, corners, and transitions. The exact blocking and framing layout depend on the border design, decking system, fastening method, and structure below it.

A successful deck surface is a system, not a pile of boards.

Work through the decisions in this order:

1. choose the decking material
2. verify the exact board dimensions and profile
3. plan board direction, seams, borders, and quantities
4. verify joist spacing and required framing support
5. set the correct side and end spacing
6. choose a compatible fastening system
7. install field boards, borders, and finish details as one coordinated layout

Use the detailed guides only when you reach that decision. The goal of this hub is to keep the decking surface connected from material selection through final installation without duplicating the planning, framing, railing, or stair systems that have their own dedicated guides.