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Fiberon Horizon Decking
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Fiberon  
Decking Installation

Getting Started
Follow local approved building codes. Careful planning of the finished deck layout will result in better looking finished projects. Failure to follow installation guidelines could void warranty.
  • Joist location plays an important role in the safety of the deck itself but may also affect the ease, method and price of your railing system.
  • Before starting, read the instructions of both the decking and railing systems planned for the project.
  • Dark colors will absorb more heat than lighter colors and as such, will experience greater ranges in expansion/contraction.
  • Thoroughly reading all instructions first will make for more profitable projects. Failure to do so may result in more difficult installation and may void warranty.
  • For decks using metal joisting, specialized surface fasteners are required. Do not use Phantom Hidden Fasteners or Deck Pilot fasteners. Fasteners for metal that install at a 90 degree angle only are required.

Joist Spacing
Joists used in deck frame construction should be 2"x 8" or larger (Figure 3).

Joist/Stringer Spacing
 
Residential
Commercial
Brand
Perpendicular
Diagonal
Stairs
Perpendicular
Diagonal
Stairs
Paramount
16
12
16*
12
8
12
Horizon
16
12
12
12
8
9
Advantage
16
12
11
12
8
9

*-Secure stair treads over and in contact with a treated pine 2x6, installed flat, not on edge, as under support, and secured with Simpson A23 approved connectors and 10d x 1-1/2" hot galvanized nails.

Residential Joist Spacing
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When installing heavy loads on top of your decking project, a hot tub, for example, it is important to also understand the requirements of the manufacturer as they may have specific framing and support requirements for their warranty coverage.

When installing blocking for more intricate decking patterns, remember that solid blocking (blocking laid on the flat) will inhibit water flow and result in buildup of organic materials over time, which will make cleaning more difficult. For best results when blocking is required, it should be installed ladder style (Figure 3).
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Board Spacing
All decking materials, whether wood, composite or metal, undergo some degree of linear expansion with the changes of weather and the season. To compensate for the effects of contraction and expansion, the following installation standards must be maintained:
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Note: Special consideration should be taken when working with dark colors as they will experience larger temperature swings during normal use. To help control end-to-end spacing, dark color decking should be kept at ambient temperature and shaded from direct sun prior to cutting and immediate securing.

The following procedures will result in less visible gapping:

  • Keep boards out of direct sun during storage and cutting processes, and through to installation if possible. Never cut and install boards in direct sun assuming them to be at ambient temperature.
  • Use lighter colored boards in the field of the deck with darker colored boards as design accents.
  • Use short boards where possible.
  • Use splitter/divider boards between each continuous run of boards.
  • Surface fasten using heavy gauge (#9 or #10) quality composite deck screws.

End-To-End Spacing by Temperature
Brand
35° & Under
36° - 69°
70° - 89°
90° - 109°
110° & Up
Paramount
1/16"
1/32"
1/32"
0
0
Horizon
1/4"
3/16"
1/8"
1/16"
1/32"
Advantage
1/4"
3/16"
1/8"
1/16"
1/32"

Note: For locations with extreme temperature swings, double-joisting and surface fastening may be required to minimize shifting of material.

Adhering to these spacing parameters will:

  • Promote proper drainage and ventilation
  • Aid in the removal of organic debris
  • Meet board spacing requirements for Fiberon warranty coverage

Surface Fasteners
The use of stainless steel composite deck screws is strongly recommended. Composite surface fasteners may be used - check with manufacturer for coating warranty. Pre-drilling is recommended. Plain, galvanized surface fasteners are not recommended.

Screw heads must be flush with board surface. Use caution to avoid over-tightening fasteners. Excess tightening may cause immediate or eventual cracking of the fastener locations.

Do not surface fasten within 11/2" of the end of a board or 1" (3 cm) from the side of the board.
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Pre-drilling

  • It is necessary to pre-drill end of board screw holes to prevent immediate or eventual end splitting (Figure 6).
  • Pre-drilling all holes will result in better looking finished projects. DO NOT over-tighten fasteners. Over-tightening will induce cracking at board ends.
  • Surface fasteners should always be driven in at a 90 angle to the decking surface. Toe-nailing screws is not recommended (Figure 7). Instead, the placement of blocking/sister joists, when needed, is recommended to allow perpendicular installation of surface fasteners at board ends (Figure 8).
  • Pre-drilling is required in cold temperatures.

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Requirements

  • Clean, straight lines of fasteners look better than wobbly lines. Use white chalk, straight boards or string lines as templates for straight lines.
  • All brands of Fiberon decking may be surface fastened. Annular thread, ring shank and spiral shank nails, of sufficient length, have excellent holding power and produce good results.
  • Screws have superior holding power. Use only screws designed for composite decking. DO NOT USE traditional bugle-head screws.
  • For a cleaner look, stainless steel composite screws are recommended. These screws are engineered specifically to work with composite decking and prevent mushrooming, resulting in better looking finished projects.

Fastening Boards
Fiberon decking requires two fasteners at every joist location (Figure 9). While surface fastening is allowed on all Fiberon decking products, the use of FIberon branded Phantom Hidden Fasteners are highly recommended with Fiberon grooved (GV) decking to create a smooth, unblemished, decking surface. Fiberon GV boards cannot be used as stair treads.
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Decking Installation Page 2

Horizon Decking

Railing Available

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Other Fiberon Decking Products:

Protect Advantage
Paramount
Symmetry

 

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