Installation Instructions

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When installing UltraDeck

decking, gapping guidelines must be followed to ensure that gaps

between decking and end gaps allow for proper expansion/contraction, drainage, and the

shrinking of treated wood joists that can happen over time.

Note: Changes in length are most significant during the installation process, and should be

accounted for if working in extreme temperatures. A good example would be cutting your planks

during a hot afternoon, letting them sit outside overnight in the cool air and then installing them

the next morning. Chances are, you will notice a certain amount of contraction. The best way to

minimize this problem is to fasten your planks as soon as possible after cutting them.

NAILER BOARDS

Two additional nailer boards will need to be added to the framing material at any

butt joint connection to properly end gap UltraDeck

planks. Additional nailer boards

must be installed at all end gaps no matter what installation method used. See

Figure 2. DO NOT use decking pieces shorter than 48" on any decking surface other

than stairs.

PLANK & END GAPPING:

TCLIPS

™

Install two UltraDeck

T-Clips

™

to each board at every end gap. The additional nailer

boards must be used to aid in supporting the deck planks and proper T-Clip

™

placement. See Figure 2. If installing decking in temperatures below 60˚ F, it is

recommended to use UltraClips

™

NATURAL

™

, RUSTIC

™

, TRIUMPH

™

, FUSION

INSPIRE

™

For every 16' of plank, allow a ⁄" gap for every 20°F temperature difference be-

tween the time of board installation and the maximum expected temperature

(refer to the end gapping chart, Figure 1). With all fastening methods, make sure to

use two fasteners for attachment of deck boards to each joist.

DEKMOUNT

Install DekMount

onto each joist by screwing a ⁄" premium screw through side

hole in DekMount

. Install deck planks one at a time, from the end of the deck,

working back towards the house or walled structure. Install two pieces of DekMount

on either board at butt joints.

SURFACE SCREWING

When using screws through the top side of decking, at each end of the plank, pre-drill

and sink screws at least ¾" away from the edge of the plank to prevent splitting.

DO NOT over-tighten the fasteners. See surface screwing installation on page 11.

A deck board installed as a joining

board at the seams will minimize

the look of end to end contraction by

separating the visual gap.

END GAPPING SOLUTIONS

Figure 1

Fig. 2

T-Clip

™

/ DekMount

Figure 2