Installation Guide

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1–800–BUY–TREX

NOTE: Construction methods are always improving. Please ensure you

have the most up-to-date installation instructions by visiting: trex.com UHPE-0512

TREX HIDEAWAY

Installing Universal Hidden Fasteners for Stair Treads

Installing Start Clips

1. Install start clips against riser on each step. Secure clips

with screws.

Installing First Board, Screws and Universal Fasteners

2. Follow instructions on previous page for installing ﬁrst

board, screws, and universal fasteners.

Installing Last Board

Option 1:

Using Hidden Fastening System

3a. Slide second board into place, making sure fasteners

ﬁt into groove. Tighten screws. Be sure to use a long #1

square bit.

4a. Secure with screws from top of second board into

stringer boards.

Option 2:

Using 2

x 4

(5.1 cm x 10.2 cm) Wood Support Blocks

3 b . A t t a c h 2 " x 4" (5.1 cm x 10.2 cm) blocks between stringers.

4b. Pre-drill holes up through blocks.

5b. Slide second board into place, making sure fasteners

ﬁt into groove. Tighten screws. Be sure to use a long #1

square bit.

6b. Secure with screws from bottom through blocks and

into stair treads.

1/4" (0.6 cm)

Decking Board

Option 1

Face Screw

Universal Fastener

Start

Clip

Deck

Frame

Stringer

Option 2

Riser

Pressure-treated 2" x 4"

(5.1 cm x 10.2 cm)

fastened to stringer