TREX JOIST MOUNT POSTS › is › content › Trex › trex... · (L Bracket) Simpson LUS28Z Post Simpson DTT2Z Trex Bolts 1/2" x 8" (13 mm x 203 mm), Nuts, and Washers Simpson L70Z

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NOTE: Construction methods are always improving. Please ensure you

have the most up-to-date installation instructions by visiting: trex.comHave Questions?

1–800–BUY–TREX

TREX®JOIST MOUNT POSTSInstallation Guidelines

JOIST MOUNT POSTSNote: All instructions below are for metal posts only; no pressure treated posts are to be used for these instructions.

Wood Frame (Inside Mount) Overview

Wood Frame (Fascia Mount) Overview

GENERAL GUIDELINES

Trex® Signature™ Fascia Mount Kit

SKU - XXFMNTWOOD

F

Trex Fascia Mount Corner Bracket Kit (Brackets, Bolts,

Nuts, Washers, & Screws) SKU - XXCORNERFMNTWOOD

G

HELPFUL TOOLS

9/16" x 6" (14 mm x 152 mm)or longer Drill Bit

Non-ferrous Metal Cutting Blade

1/2" (13 mm) Step Bit

Simpson ML26Z**

(or similar)

SimpsonDTT2Z**

SimpsonL70Z**

(or similar)

SimpsonLUS28Z**

(or similar)

B C D EJoist Mount Post for Trex Composite Post Sleeve SKU CPJMNTPOST63

» (1) Joist Mount Post» (2) Guide blocks» (2) 10 x 1" (2.5 cm)

Self-tapping screws» (18) #8-15 x 1-1/4"

(3.2 cm)Self-tapping screws

» (2) 1/2" x 8" Bolts, Washers, & Nuts

Trex Joist Mount Post for Trex® Signature™ Railing SKU XXJMNTPOST63XX denotes color: (BK-Black, BZ-Bronze, WT-White)

» (1) Joist Mount Post» (2) 1/2" x 8" Bolts,

Washers, & Nuts*» (1) Post Cap» (1) Post Skirt

* Note: bolt heads, washers, and nuts are color matched to joist mount post color

NOTE: To allow fascia to sit flat against framing, route/trim out back side of fascia to allow for fit over bolt locations.

NOTES: » Trex fascia should be installed prior to installing any outside

joist post mounts» Can only be used with Trex® Signature™ 6' or less railing

spans.

» Code Approved Joist Mount Post Applications: - 30" or less deck height - Code approval not applicable - IRC Compliant - Yes - IBC Compliant - No» Minimum framing is 2"x 8" (51 mm x 203 mm)

(ensure all structural brackets are sized appropriately for framing).

» Follow all structural bracket manufacturer's guidelines for fastener selection and corrosion protection requirements.

» Maximum OC framing is 16" (406 mm).» This post is designed to cut-to-length and will accommodate

up to 42" (1067 mm) stair railing on 2" x 12" (51 mm x 305 mm) framing.

» Included template works for most, but not all, applications. Review instructions carefully prior to drilling holes, making sure to center holes on post.

» **Simpson structural brackets are not included with joist mount posts and must be purchased seperately.

XX denotes color BK-Black, BZ-Bronze, WT-White

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TREX® JOIST MOUNT POSTSInstallation Guidelines

INSIDE MOUNT (FRONT RIM PLATE - BETWEEN JOISTS WITH BLOCKING)

Simpson L70Z

Trex Bolts 1/2" x 8" (13 mm x 203 mm),Nuts, and Washers

Simpson LUS28Z

Simpson ML26Z

Blocking 2"x 8"

(51 mm x 203 mm)

INSIDE MOUNT (FRONT RIM PLATE - NEXT TO JOIST)

Simpson L70Z

SimpsonDTT2Z

SimpsonDTT2Z


TOP VIEW

SIDE VIEW

Post

Front Rim Joist

Front Rim Joist

Simpson LUS28Z

Post

SimpsonDTT2Z

NOTE: If a joist hanger is in this location, it must be removed so post mount will fit properly.

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» TREX SUPPLIES (2) HG 1/2" x 8" (13 mm x 203 mm) BOLTS, NUTS, AND WASHERS.» CUSTOMER MUST SUPPLY ADDITIONAL HG 1/2" X 8" (13 mm x 203 mm) BOLTS, NUTS, AND WASHERS.

SIDE VIEW

Simpson L70Z

Crush Block2"x 4"

(51 mm x 102 mm)

SimpsonDTT2Z

SimpsonDTT2Z

Trex Bolts 1/2" x 8" (13 mm x 203 mm), Nuts, and Washers

Simpson LUS28Z

Bottom bolt runs under the 2"x 4"

(51 mm x 102 mm) crush block

Crush Block

Blocking 2"x 8"

(51 mm x 203 mm)

INSIDE MOUNT (SIDE JOIST)

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TREX® JOIST MOUNT POSTSInstallation GuidelinesTREX® JOIST MOUNT POSTSInstallation Guidelines


Blocking 2"x 8"(51 mm x 203 mm) min

SimpsonDTT2Z

SimpsonDTT2Z


Front RimJoist

Simpson L70Z

Simpson LUS28Z

Blocking 2"x 8"

(51 mm x 203 mm)

NOTE: If a L70Z is in this location,it must be removed so post mountwill fit properly.

INSIDE MOUNT (CORNER)

NOTE: 1/2” x 8" (13 mm x 203 mm) bolts must be wider (vertically) on front rim and narrower on side joist to avoid contact inside the post.

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COMPOSITE POST SLEEVE APPLICATIONS

Installation of Guide Blocks and Railing

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.

1. Place or rest bottom 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.

2 Attach bottom guide block using one 10 x 1" self tapping screw (provided) in notch to lock guide block onto post.

3. Location of top guide block will vary slightly based 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.

4. Attach top guide block using one 10 x 1" self tapping screw (provided) in notch to lock guide block onto post.

» If using the joist mount post with composite post sleeve, quantity of 18 self-tapping screws are provided to cover all types of Trex railing bracket installations (Transcend, Trex® Signature™, and Select). Depending on the type railing being installed, you may have screws that are not used.

» If using 6x6 post sleeves, attach designated railing brackets using #8-15 x 1-3/4" (4.4 cm) 316 stainless steel self-tapping screws (not provided).

» Pre-drilling IS REQUIRED when attaching brackets to designated posts. Use a 9/64" (3.6 mm) drill bit to predrill at specified locations according to instructions provided with railing kits.

1

notch

3

notch

2

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FASCIA MOUNT (FRONT RIM PLATE - NEXT TO JOIST)

» FOR USE WITH TREX® SIGNATURE™ 6' RAILING SECTIONS ONLY.» TREX SUPPLIES (2) HG 1/2" x 8" (13 mm x 203 mm) BOLTS, NUTS, AND WASHERS.

SimpsonDTT2Z

SimpsonLUS28Z

Trex Bolts 1/2" x 8" (13 mm x 203 mm), Nuts, and Washers

Trex Fascia Mount Kit

(L Bracket)

Front RimJoist

Post

SimpsonDTT2Z

SimpsonDTT2Z

Post

L-Bracket

Simpson L70Z

SIDE VIEW

TOP VIEW

NOTE: If a joist hanger is in this location, it must be removed so post mount will fit properly.

Trex Fascia

Trex Fascia

Front RimJoist

Trex Decking

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FASCIA MOUNT (SIDE JOIST - WITH BLOCKING)


SimpsonDTT2Z

SimpsonDTT2Z

Trex Fascia Mount Kit

(L Bracket)

SimpsonLUS28Z

Post

SimpsonDTT2Z


Simpson L70Z


Side Rim Joist

TOP VIEW

Post

L-Bracket

L-Bracket

SIDE VIEW



Trex Fascia

Trex Fascia

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» 3/4" (19 mm) FASCIA MUST BE USED, OR BOLTS MUST BE CUT DOWN.» INSTALL POST TIGHTLY ON RIM JOIST FIRST – NUTS WILL BE INACCESSIBLE LATER.» MUST USE TREX FASCIA MOUNT CORNER BRACKET KIT.

1. Install post on rim joist and fully tighten using Simpson DTT2Z on top bolt.2. Run 10" (254 mm) bolt through gap in existing Simpson DTT2Z and tighten into second DTT2Z.3. Install bottom bolt.

TREX® SIGNATURE™ RAILING APPLICATIONSInstallation of Railing1. All required hardware is included with Trex® Signature™ railing. Follow Trex® Signature™ railing instructions

for complete installation requirements.

NOTE: If a L70Z is in this location, it must be removed so post mount will fit properly.

SimpsonDTT2Z

1 Bolt 1/2" x 10" (13 mm x 254 mm), Nut, and Washer

3 Bolts 1/2" x 6"(13 mm x 152 mm), Nuts, and Washers

SimpsonLUS28Z

SimpsonL70Z Front Rim Joist

Side Joist

Trex Fascia Mount Corner Bracket (Kit)

Trex FasciaMount Kit

(L Bracket)

3/4" (19 mm) Fascia

FASCIA MOUNT (OUTSIDE FRAME CORNER)

Documents

TREX JOIST MOUNT POSTS › is › content › Trex › trex... · (L Bracket) Simpson LUS28Z Post Simpson DTT2Z Trex Bolts 1/2" x 8" (13 mm x 203 mm), Nuts, and Washers Simpson L70Z