TAMKO ENVISION - Manual

Decking Installation Instructions
CUTTING & DRILLING
EverGrain and Envision decking and skirting products will expand and
contract with changes in temperature. The amount of expansion and
contraction will vary depending upon board size and temperature. Smaller
boards will expand less and larger board sizes will expand more. When
installing decking, side-to-side spacing must be a minimum of 1/8" between
adjacent boards.
* End-to-end spacing between boards must be approximately 1/16" for
every 20-degree increment
of temperature difference
between the temperature
during installation and the
maximum expected summertime
temperature in your area.
+ Butt joints of boards must be
staggered. A sister joist must
be utilized at the butt joint to
provide a greater fastening area.
SPACING
JP60661
• Make safety of the workplace the prime consideration. Always wear the
proper protective clothing and safety equipment and adhere to all safety
guidelines contained herein.
• MODIFICATION TO THE BOARD, OTHER THAN AS STATED IN THESE
INSTALLATION INSTRUCTIONS (SUCH AS CUTTING TO LENGTH,
DRILLING FASTENER HOLE, ETC.) MAY COMPROMISE THE
INTEGRITY OF THE BOARD WHICH COULD LEAD TO PREMATURE
DEGRADATION.
• EverGrain and EverGrain Envision ("Envision") is specially made with
natural board to board color variation. Layout and view all boards prior
to cutting and fastening to ensure the desired look is achieved.
• As with all walking surfaces, decking products located in higher traffic areas
may show wear earlier than other areas. Dragging furniture or other objects
across the product will cause surface scratches.
• Discuss any desired material changes, including color issues, with the
supplier prior to cutting or fastening the decking to the structure.
• The weathering process for EverGrain and Envision decking products will
vary due to region, climate, rain, sunlight exposure, etc. Some variations in
decking shade will appear due to weathering that will occur at the supplier’s
yard prior to shipment and due to different lots. For best results, use
material from the same date code (stamped on the bottom of boards)
whenever possible.
• The color of EverGrain and Envision decking products will usually weather
to a lighter shade after several months of exposure to the environment.
Color may vary across profiles.
• EverGrain and Envision decking have a more flexible feel than wood
primarily during the heat of summer. This is a natural condition that will not
affect the ability of the decking to perform as warranted. For a more rigid feel,
reduce joist span spacing by 4”.
• EverGrain and Envision decking and railing products must be installed
in accordance with the installation instructions. Deviations from these
instructions may result in unsatisfactory performance, create a potential
safety hazard and may exclude coverage of your decking and/or railing
material under the limited warranty.
• EverGrain and Envision decking products must never be applied
directly to any solid surface (concrete, membranes, etc.) or in conjunction
with systems where inadequate drainage or improper ventilation are found.
There must be proper ventilation and adequate air circulation underneath
the deck to promote the evaporation of any water or moisture.
• Fire and other sources of excessive heat may damage EverGrain and
Envision deck boards. Damage caused by fire or other heat
sources may include melting, sagging, warping, discoloration, charring,
increased expansion or contraction, accelerated weathering, etc.
• Low-E glass is one potential source of excessive heat because it is designed
to reflect more sunlight than traditional glass. This enhanced reflectivity
combined with any irregularity in the window glass can concentrate sunlight
onto the deck and cause heat build-up on areas of the deck surface. When
this occurs, damage to EverGrain or Envision decking is possible.
Contact the manufacturer of the product which contains the Low-E glass for
suggestions to reduce or eliminate the reflected heat.
• Composite decking will retain heat when exposed to direct or reflected
sunlight. Exercise caution if walking barefoot as footwear may be required.
IMPORTANT EVERGRAIN ® AND EVERGRAIN ® ENVISION ® PRODUCT INFORMATION
Maximum center-to-center spans with a minimum of three joists are
shown below. EverGrain and Envision decking products must not be
applied to a solid surface.
Center-To-Center Span
Board Span 1 Span 1 Stair Tread 2
Size (90°) (up to 45°)
1" x 6" 16" 12" 12"
2" x 6" 24" 16" 16"
1 Live Load Rating of 100 lb/ft 2 .
2 Continuous two-span installation.
EverGrain and Envision decking have a more flexible feel than wood
primarily during the heat of summer. This is a natural condition that
will not affect the ability of the decking to perform as warranted. For a
more rigid feel, reduce joist span spacing by 4". Decking must not be
cantilevered (overhang edge of deck) because structural support is
required. EverGrain and Envision decking products are non-structural
construction products. The decking products must not be used as a
structural member; including joists, load bearing columns, stringers, or
beams.
For best results, add an additional joist at the butt joints to increase
stiffness.
LUMBER SIZES & DIMENSIONS
Nominal Size Actual Size
1" x 6" x (12', 16' or 20') EverGrain and Envision 15/16" x 5-1/2"
2" x 6" x (16' or 20') EverGrain only 1-7/16" x 5-1/2"
8" EverGrain Skirting (12') 1/2" x 7-1/4"
12" EverGrain Skirting (12') 1/2" x 11-7/8"
12" Envision Skirting (12') 7/16" x 12"
All Tolerances +/- 1/16"
DECKING SPAN CHART
+ EXAMPLE:
80ºF at time of installation and a
maximum expected summertime
temperature of 100°F equals an end-to-
end spacing of 1/16".
When working with EverGrain and Envision decking products, saw blades and
router bits with carbide tips are recommended. Saw blades must be sharp. The
use of dull saw blades will result in damage to the outer layer of Envision boards.
For best results, use blades with two teeth per inch. To avoid clogging when drilling
holes, frequently remove shavings by raising the drill bit out of the hole.
Modification to the board, other than as stated in these installation instructions
(such as cutting to length, drilling fastener hole, etc.) may compromise the
integrity of the board which could lead to premature degradation.