Installation Guide

28
DECKING
NOTE: Construction methods are always improving. Please refer to www.trex.com for the most up-to-date installation requirements.
TREX
®
FASCIA INSTALLATION RECOMMENDATIONS
Trex Fascia utilized around the perimeter of a deck must
be gapped with the same requirements as Trex decking
to allow for air fl ow and expansion/contraction of the
fascia.
The gapping requirements are as follows:
WIDTH-TO-WIDTH GAP
Below 40°F (4.5°C) 3/8" (10 mm)
Above 40°F (4.5°C) 1/4" (6 mm)
END-TO-END/END-TO-WIDTH & ABUTTING GAP
End-to-End/
End-to-Width
Abutting
Below 40°F (4.5°C) 3/16" (5 mm) 1/2" (13 mm)
Above 40°F (4.5°C) 1/8" (3 mm) 1/4" (6 mm)
When Using Approved Fascia Fasteners:
NOTE: The fasteners listed below can only be used with
1x8 or 1x12 fascia product, and cannot be used with
decking product that is being used as fascia trim or stair
risers.
Trex recommends the use of Starborn
®
DeckFast
®
Fascia System, for all composite Trex fascia profi les.
For near water applications, you can also use Fascia
System HeadCote
®
stainless steel screws. Refer to
manufacturer recommendations for specifi cs if this is
required.
If using 2 x 8 framing, use two fascia screws every 18
"
(457 mm)
. If using 2 x 10 or greater framing, use three
fascia screws every 18
" (457 mm). Follow manufacturer
instructions for further install instructions and ALWAYS
remember to gap fascia properly. A secondary glue is
not required when using these fasteners.
NOTE: The above fasteners can ONLY be used with
fascia profi les. If using deck boards as fascia, refer to the
recommendations in next column on this page.
If Using other Fasteners and/or Using Decking
product in Fascia/Stair Riser Applications:
While Trex prefers the previous methods of attachment,
as these are the very best options, there are also other
recommendations that can be followed for fascia or
deck boards being used for fascia. Use three Trex
recommended composite decking screws every 12
"
(305 mm).
ALWAYS refer to manufacturer instructions to
ensure that recommended screws can be used for fascia
applications. The top screw should be placed 1
" (25 mm)
from the top of the rim joist, the second screw in the
center of the rim joist, and the third screw 1” (25 mm)
from the bottom of the rim joist.
IN ADDITION, also use a weather-resistant,
construction-grade adhesive (adhesives that work with
wood will work with Trex products) as a SECONDARY
fastener when attaching fascia. Remember to wipe
away any excess before drying or allowing to drip on
other Trex surfaces.
ADDITIONAL TIPS:
» 10
" (254 mm) rim joists allow for an easier and more
aesthetically pleasing installation.
» Miter cuts at butt joints and corners allow for a more
aesthetically pleasing installation.
FRAMING AND FASTENING TIPS
FASTENING TIPS FOR TREX ESCAPES*
You can fasten Trex Escapes with the
recommended fasteners at least 1/2" (13 mm)
and not more than 4" (102 mm) from the board
edge without splitting. You do not have to pre-
drill with Trex Escapes.
* Use Trex Universal Hideaway Hidden Fasteners
for Escapes grooved product. This includes
additional screws for installation.
FASTENING TIP FOR TREX ESCAPES,
TREX TRANSCEND, TREX ENHANCE, AND
TREX SELECT
NOTE: When using pneumatic or battery-
operated equipment, adjust the pressure so
that you only shoot the head of the screw to be
fl ush with the board’s cap. DO NOT shoot the
fastener head completely through the cap.