INSTALLING TREX SIGNATURE ® D E C K I N G / CONT INUED INSTALLING LAST DECK BOARD (SQUARE-EDGE BOARD RECOMMENDED)
SPANNING REQUIREMENTS FOR TREX ® S T A I R S Note: English measurements are shown. Convert to metric measurements if necessary.
9
10
11" min. depth
Stringer
1
1/4" - 3/8" gapping
3/4" max. overhang
1" (25mm)
(1" x 8" fascia shown for reference)
Route one side of square-edge board to use with hidden fasteners. TIP: Use a recommended hidden fastener screw and plug for last board installation.
Fasten treads to all stringers
1” x 8" Riser
REPLACING TREX SIGNATURE ® D E C K I N G Installed with Trex Hideaway® Universal Fasteners
New board at an angle
1
2
See chart below
Riser removed for clarity
36" minimum width – 4 stringers are required Above 36" width – 5 stringers are required
Existing Deck
2
STAIRS Stairway Detail
1
NOTES: » Trex rails meet all major building codes for use as a guardrail system. Local municipalities may require a graspable handrail on stairways. Check with your local building code official for local requirements. See Trex ADA Handrail System in the Trex product catalog.
» S tair treads built with Trex meet requirements of the major national building codes. Consult your local municipality for specific requirements. » F asten stair treads continuously across at least four stringers. » S ee chart (to the right) for center-to-center spacing of profiles. » D ress the sides of the stringers and risers with trim or Trex fascia for a finished look. » W hen installing risers, use two screws per every stringer. » M ost model building codes require the stair treads to be constructed under the following requirements: › Stairways must be at least 36" wide* › Stair treads must be at least 11" deep » G apping between Trex boards on stair treads must be 1/4"–3/8". » T he overhang of the stair tread is not to exceed 3/4". *For railings that are installed directly over stair treads, the stair treads may need to be larger than 36" wide. Refer to local building code regulations for details prior to installing stairs and railings.
Insert Fasteners
4
3
MAXIMUM SPACING ON CENTER OF STAIR STRINGER
Insert Fasteners
12"
Signature 1" x 6"
19
18
NOTE: Construction methods are always improving. Please refer to www.trex.com for the most up-to-date installation requirements.
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