Dockside Landing Page / Outdoor Living / Select Decking Materials
Outdoor Living building materialsFeatured Products Decking Railing Trim & Accessories Fasteners Choosing Materials Select Decking Material Select Fasteners Mark Hopkins, Deck & Rail Specialist
Composition

A composite deck board is manufactured with a combination of wood flour and plastic through a process known as extrusion.  Composite decking has come a long way since its introduction in the late 1990s.  Manufacturers have improved dies and UV stabilizers, offering a range of color options with minimal fading. Structurally, most composites offer stability at recommended spans and durability superior to pressure treated lumber.  Most come with extended warranties.


PVC decking has no wood fiber. This improves resistance to staining, scratching, mold and mildew.  Because it does not absorb moisture or retain much heat, PVC stays cooler in the sun and exhibits minimal expansion and contraction.  PVC decks provide years of enjoyment with very little maintenance.


Classic hardwood decks can be stained and sealed or allowed to weather naturally.  Most will weather to grey or silver if left untreated. Tropical hardwoods are extremely durable and resistant to insects and decay.


Pressure treated pine remains a popular choice.  Dockside Marine Supply carries 5/4 x6 premium deck boards treated with micronized copper azole.  Pressure treated decking can be painted or stained.

Variegated Streaking
Variegated streaking creates a randomized pattern of dark streaking along the deck board to replicate the appearance of natural wood. No two boards will be exactly the same.
Extrusion
Extrusion is a manufacturing process in which heated material is pushed or pulled through a dye. Monoextrusion is a single step process. Co-extrusion involves a second step in which a shell is extruded around a solid core.  A monoextruded deck board will be a solid color and consistency throughout the board while co-extrusion allows for deeper and more varied colors.
Dimensions
Lumber is traditionally quoted in rough dimensions and sold in smooth dimensions. The process of creating a smooth surface from rough cut lumber results in a loss of dimension, so a board that is rough cut 5/4 x 6 will measure approximately 1 x 5 . Synthetic decking is quoted according to the same convention. Decks.com provides a calculator that can provide assistance in calculating your material requirements.
Span
Manufacturers provide guidelines for the minimum spacing between the centers of each floor joist. If you are constructing a new composite or synthetic deck, consider these guidelines when designing your frame. If you are resurfacing an existing deck, you may need to add extra joists.
Spacing
This refers to the recommended gap between deck boards. Spacing deck boards allows for air flow, expansion and contraction, and allows dirt to pass through without accumulating between deck boards.
Warranty
This refers to the manufacturers warranty available in full at the links below. Dockside Marine Supply does not warrantee any material, but will assist our customers in processing a manufacturer claim should it become necessary. Please see the Standard Terms and Conditions of Sales at Dockside Marine Supply Company.
Compare Decking Products Across Styles and Brands
Brand Composition Features Extrusion Dimensions Span Spacing Hidden Fasteners Available Warranty
Azek Deck
Harvest Collection
PVC Stain, scratch and fade resistant monoextruded 1x 6 16" 1/8"
to 1/4"
Cortex, Tigerclaw ProClip Lifetime Limited Warranty
Azek Deck
Terra Collection
PVC

Stain, scratch and fade resistant,
darker colors,
enhanced grain

co-extruded 1x 6 16" 1/8"
to 1/4"
Cortex, Tigerclaw ProClip Lifetime Limited Warranty
Azek Deck
Arbor Collection
PVC Stain, scratch and fade resistant,
vibrant colors, variegated streaking
co-extruded 1x 6 16" 1/8"
to 1/4"
Tigerclaw ProClip Lifetime Limited Warranty
Timbertech
Twin-finish
Composite Realistic wood grain,
available grooved or square edge
monoextruded 1x 6 20" 1/8" ConceaLoc, Cortex 25-year Limited Residential Warranty
Timbertech
Earthwood
Composite Tropical hardwood look,
variegated streaking
monoextruded 1x 6 20" 1/8" ConceaLoc, Cortex 25-year Limited Residential Warranty
Timbertech
XLM
PVC Stain, scratch and fade resistant,
Class A-flame rating
co-extruded 1x 6 16" 1/8" ConceaLoc 25-year Limited Residential Warranty
Timbertech
Docksider
Composite 2x6 board for longer spans monoextruded 2x 6 24" 1/8" Tigerclaw TC-3 25-year Limited Residential Warranty
Evergrain
Classic Collection
Composite Deep grain,
natural wood colors
monoextruded, compression molded 1x 6 16" 1/8" Tigerclaw TC-3 20-year Limited Warranty, 5-Year Full Start (includes labor)
Evergrain
Vibrance Collection
Composite Deep colors, variegated streaking monoextruded, compression molded 1x 6 16" 1/8" Tigerclaw TC-3 20-year Limited Warranty, 5-Year Full Start (includes labor)
Ipe Hardwood Extremely durable tropical hardwood N/A 1x 6 24" 1/8" Eb-ty Biscuiting with grooved planks N/A
Garappa Gold Hardwood Related to Ipe, durable and less dense than Ipe N/A 5/4x 6 24" 3/16" Eb-ty Biscuiting with grooved planks N/A
Mahogany (Miranti) Hardwood Kiln-dried renewable Malaysian hardwood N/A 5/4x 6 24" 1/4" Eb-ty Biscuiting with grooved planks N/A
5/4 x 6 pressure treated pine Treated lumber Premium treated lumber N/A 5/4x 6 18" 3/16" N/A N/A

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