Lumberock - Marine Grade Decking

Railing Installation

Please note that Lumberock Marine Grade Decking claims no liability or responsibility for the improper installation of our product. All installations are unique and it is the sole responsibility of the installer to determine specific requirements in regard to each application. We recommend that all designs be reviewed by a licensed architect, engineer or local building official before installation.

Railing Materials List


To download a PDF of our Railing Installation Instructions click here.

Step 1 - Cut Materials for a 6' Section

Measure the exact distance between each set of posts and cut the 2×4 Top Spindle Support, the 2×4 Bottom Spindle Support and the 2×6 Top Rail accordingly. Use the thirteen (13) 2x2s as the Railing Spindles and space them evenly between the post sleeves. Cut the remaining 2x2s into two 3.5″ Support Blocks.

Step 2 - Assemble Spindles

Screw the middle Spindle to the center point of the 2×4 Top and Bottom Rails. Attach the remaining Spindles, working your way out from the center point. Leave a maximum 3.5″ gap between each Spindle. Center the 2×2 Spindles on the 3/5″ side of the 2x4s. Screw all Spindles to the 2×4 Top and Bottom Rails.

Step 3 - Attach the support blocks

Center and attach the two (2) Support Blocks under the 2×4 Bottom Spindle Support as shown on the Railing Installation Instructions (shown above – or click here).

Step 4 - Attach 2 x 6 top rail

Make sure you center the Top Rail to the Top Spindle Support board.

Step 5 - Attach railing assembly to posts

Measure the exact distance between posts and confirm maximum distance between posts is six (6) feet or less. Trim rail ends to length if needed to fit in between the posts. Attach the rail assembly to the posts.