How to Install Deck Railing
Learn how to install deck railing with our detailed step-by-step guide. Follow our easy instructions to get it done right.
Your Progress
0 of 6 steps completedStep-by-Step Instructions
1 Step 1: Plan Railing Layout
Step 1: Plan Railing Layout
Check local codes for height (usually 36-42 inches) and baluster spacing (max 4 inches).
Deck Building Code Guide
Reference book for deck safety codes and requirements
2 Step 2: Install Railing Posts
Step 2: Install Railing Posts
Attach 4x4 posts to deck frame with bolts or post brackets every 6-8 feet.
4x4 Pressure-Treated Posts
Treated posts for railing (8-foot each)
Post Mounting Brackets
Heavy-duty brackets for securing posts to deck (pair)
3 Step 3: Install Top and Bottom Rails
Step 3: Install Top and Bottom Rails
Attach 2x4 or 2x6 top rail and bottom rail between posts, secure with screws.
2x4 Pressure-Treated Lumber
Treated lumber for rails (8-foot board)
Deck Screws
Exterior screws for railing assembly (5-lb box)
4 Step 4: Cut and Install Balusters
Step 4: Cut and Install Balusters
Measure, cut balusters to fit between rails, space max 4 inches apart.
2x2 Balusters
Pre-cut deck balusters (pack of 10)
Miter Saw
Power saw for cutting balusters to length
5 Step 5: Attach Post Caps
Step 5: Attach Post Caps
Install decorative post caps on top of each railing post.
Solar Post Cap Lights
Lighted caps for deck posts (4-pack)
Wood Post Caps
Decorative wood caps for 4x4 posts (4-pack)
6 Step 6: Sand and Finish
Step 6: Sand and Finish
Sand rough edges, apply deck stain or sealant to match existing deck.
Deck Stain
Exterior wood stain for railings (1 gallon)