TREX ® POST MOUNT – DECKING AND CONCRETE
LOCATION AND INSTALLATION OF SURFACE MOUNT POST - DECKING/ CONTINUED
Blocking boards
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NOTES: » U se composite shims or similar material (not provided) if posts are not plumb. Ensure that post is placed on decking surface so that it clears the rim joist and there is enough clearance on the underside blocking for the back plate to be installed. » R im joist removed to show proper attachment of hardware. Install Guide Blocks NOTE: Pre-drilling is not required but is optional for attachment of guide blocks to post. Use a drill bit slightly smaller in size than that of screw being installed.
4. Install two 2 x 8 boards as blocking under post location. Securely attach blocking using a total of twenty-four 3" (7.6 cm) pressure-treated compatible screws (not provided) .
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8. P lace or rest bottom
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aluminum guide block on bottom of post. Place guide on post so that notch is on a side that does not require railing to be attached.
notch
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5. Using post a template, mark locations of holes. 6. D rill through decking and blocking boards using 5/8" diameter bit (long drill bit will be required).
9. A ttach bottom guide block using one 10 x 1 " self-tapping screw
(provided) in notch to lock guide block onto post.
7. Attach posts using four 3/8" x 6" (1 cm x 15.2 cm) hex cap bolts, washers, and nuts, along with
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aluminum back plate on underside of blocking. If the project requires IRC compliance, this back plate MUST be installed under the decking to ensure this will meet code compliance. Reference SKU part number ALPOSTHWDECK for required hardware and aluminum plate. (Consult local code official for more information on IRC Compliance.)
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notch
10. L ocation of top guide block will vary slightly depending on type and height of railing being installed. Determine this measurement and place top guide block in location where top bracket for desired railing would be approximately on center of the top railing bracket location. 11. Attach top guide block using one 10 x 1 " self-tapping screw (provided) in notch to lock guide .block onto post.
NOTE: If attaching post directly to pressure-treated wood, use a thin stainless steel or plastic barrier strip under the baseplate.
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Have Questions? 1–800–BUY–TREX
PMD&C-0825
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