Metal Framing Requirements and Gapping
NOTE: English measurements are shown. Convert to metric measurements if necessary.
Two screws per joist
Gap decking end-to-end 1/8” (>40°F) 3/16” (<40°F)
Gap decking width-to-width 3/16” (All Temps)
Double joist spacing per manufacturers requiremenrs requirements
3/4” max. overhang
Adjust end span framing per manufacturers requirments requirements
Perimeter joists
NOTES: » When using a metal framing system follow manufacturer's instructions for proper installation. » When using screws to attach decking to framing, use two screws per every joist.
Compatible Fastener Materials for use with Trex decking
Stainless Steel: 300 Series or 1.4301 / 1.4401 / 1.4567
Carbon Steel with Corrosion-Resistant Coating
Stainless Steel: 410 Series or 1.4003 / 1.4006
Substrate Material
Steel
No
Yes*
No
*Trex Steel Framing Universal Hidden Fastener (SKU-ELVUNICLIP) are recommended.
» If using a fastener that is material compatible with substrate but is not listed as a recommended Trex fastener, the decking material will need to be predrilled before use. » If any condition occurs which is attributable to the use of non-recommended fasteners, such condition shall not be covered under the Trex Limited Warranty.
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