SPANNING REQUIREMENTS FOR TREX STAIRS
NOTE: Shown with timber framing.
280 mm min. depth
Stringer
5 mm gapping
20 mm max. overhang
Fasten treads to all stringers
14 mm x 184 mm Riser
Trex fascia or trim
See chart below
Riser removed for clarity
91.4 cm minimum width – 4 stringers are required Above 91.4 cm width – 5 stringers are required
MAXIMUM SPACING OF STAIR JOISTS (Center-to-Center)
Transcend 25 x 140 mm
30 cm
Enhance 25 x 140 mm
23 cm
Transcend 33 x 140 mm
30 cm
NOTE: Construction methods are always improving. Please refer to www.trex.com (and your country) for the most up-to-date installation requirements.
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