Fiberon Concordia Astir Seaside Mist
From $107.03
Fiberon Astir Seaside Mist is a low-maintenance composite decking featuring soft coastal-grey tones and a rustic cathedral-grain finish.
Warranty: Limited lifetime residential performance and 50-year residential stain and fade coverage, subject to manufacturer terms.
Description
Fiberon Astir Seaside Mist composite decking combines soft coastal-grey tones with a rustic cathedral-grain finish. It is an option for Canadian homeowners seeking the appearance of wood with less routine upkeep.
Part of the Concordia range, Astir offers reversible deck boards with a finished top and bottom. Select the board profile for your application, then choose an available length.
Features & Benefits
- Low-maintenance finish: No routine sanding, staining or painting.
- Four-sided protection: PermaTech capping protects the composite core.
- Reversible deck boards: Finished top and bottom surfaces help reduce installation waste.
- Wood-inspired appearance: A rustic cathedral-grain finish in Seaside Mist.
- Durable construction: The composite core helps resist rot, splintering and insect damage.
- Recycled content: Made with 94% recycled material.
Available Board Profiles & Dimensions
| Profile | Dimensions | Lengths | Best used for |
|---|---|---|---|
| Grooved deck board | 0.935” × 5.4” | 12′, 16′, 20′ | Main deck surface with compatible hidden fasteners. |
| Solid-edge deck board | 0.935” × 5.4” | 20′ | Picture framing, perimeter boards and stair treads. |
| Fascia board | 0.75” × 11.25” | 12′ | Covering exposed framing around the deck perimeter. |
| Riser board | 0.75” × 7.25” | 12′ | Finishing the vertical surfaces of deck stairs. |
Recommended Fasteners
Grooved deck boards
CAMO WEDGECLIP Hidden Fasteners
Concealed fastening for compatible grooved decking on wood joists. Follow the clip and board manufacturers’ installation instructions.
Solid-edge deck boards
Starborn HEADCOTE CAP-TOR Screws + Fiberon PRO PLUG Plugs
Concealed face fastening for picture framing, perimeter boards and stair treads. Select Seaside Mist plugs compatible with Fiberon Concordia Astir decking.
Visible deck-board fastening
Starborn HEADCOTE CAP-TOR xd Colour-Matched Screws
Exposed-head fastening for solid-edge decking.
Colour match: Grey #37.
Fascia, skirts & risers
Starborn HEADCOTE Fascia Screws
For fascia, skirt and stair riser installation.
Colour match: Grey #37.
Screws, plugs and installation tools are sold separately. Use the appropriate PRO PLUG tool for plugged deck-board fastening and the DECKFAST Fascia Tool for fascia screws. Compare the screw finish with your boards before installation, and follow Fiberon, CAMO and Starborn instructions for the specific board profile and fastening system.
Easy Cleaning & Maintenance
Clean periodically with soap and water or a mild cleaner, following Fiberon’s care instructions. Remove dirt and debris regularly to keep the deck surface clean.
Warranty
Fiberon Concordia Astir carries a limited lifetime residential performance warranty and a 50-year residential stain and fade warranty. Coverage is subject to the manufacturer’s terms, exclusions and installation requirements. View Fiberon warranty details.
Additional information
| Material Type | Composite Decking |
|---|---|
| Colour Family | Grey |
| Colour Variation | Variegated |
| Board Profile | Grooved Deck Board, Solid Edge Deck Board, Fascia, Riser |
| Collection | Fiberon Concordia Astir |
| Length | 12’, 16’, 20' |






