Installation Instructions

ManualsBrandsWilliams Architectural Products ManualsBuilding materialsStandard 3" Post Cap - Black

Table Of Contents

It is the responsibility of the installer to meet all local code requirements and obtain all required building permits. The

installer should determine and implement appropriate installation techniques for each installation situation. Williams

Railing or its reseller shall not be held responsible for improper or unsafe installation.

CAUTION! IF INSTALLING LIGHTING, WIRING MUST BE INSTALLED PRIOR TO

SECURING POSTS TO DECK SURFACE AND INSTALLING TOP RAIL SNAPS.

INSTALLATION

INSTRUCTIONS

3" ALUMINUM POST INSTALLATION

FOR OTHER INSTRUCTIONS AND VIDEOS, VISIT

WWW.WILLIAMSRAILING.COM.

SUGGESTED TOOLS: Cordless Drill, 3/16" Drill Bit,

5/8" Drill Bit (optional), Safety Glasses

IMPORTANT NOTE: Do not install base plate

cover until railing assembly is completed.

3" posts are required to reach 6' and 8' lengths.

Dia. #2

Shims

below

base

2x6 Blocking

5/16" X 6"

Exterior Torx/

Star Drive

Construction

Screws

3/16" holes for

deck screws

5/8" hole for

lighting wires

(optional)

Dia. #3

Cap

3" Sq. Post

3" Post Base Plate

Vinyl Cover

STEP ONE -

Determine necessary posts required and prepare

(end, center or corner)

• Refer to Panel Install Instructions. Install lower clip on post and

secure with (2) - #8x3/4" TEK screws (Dia. #1). Clips are located in

the Panel Kit.

STEP TWO - Securing Posts to Deck

Install proper post blocking as per (Dia. #2). Use proper

attachment screws or anchors as directed below. (Deck screws

at each post location, are not included with kits).

• With 3/16" drill bit, pre-drill through deck boards and into blocking.

• Drill a 5/8" hole in center of four deck screw holes for lighting wires

(optional).

• Level and plumb post using shims.

• Secure posts to deck with suggested screws.

STEP THREE -

Installing post cap and post base plate vinyl cover*

• Install post cap (Dia. #3)

• *Install base plate cover after railing assembly is completed. (Dia. #3)

Rest jig on

Base Plate

here - Arrow

Down

Place Clip in

hole, hold clip

rmly while

installing (2)

TEK Screws.

Dia. #1

POST-TO-SURFACE

MOUNTING SCREWS:

3" Posts – Residential Deck

Applications – 5/16" X 6" Exterior

Torx/Star Drive Construction

Screws

3" Posts – Residential Concrete

Applications – Tapcon

5/16" x

3” Hex Washer Head Concrete

Anchor

Deck Edge

3" Centerline

Typical

3" Centerline

Typical

Joist

Stringer

2x6 Blocking

2x6 Cross

Block