Wood Post Base Trim

Wooden trim to accentuate your post sleeves.

Deckorators® traditional Wood Post Base Trim adds a finishing touch to the bottom of your posts while hiding the gaps between posts and decking.

Available Sizes:

  • Available to fit a standard 4" x 4" post (inside dimensions measure 3-5/8" x 3-5/8") - Pressure-treated Pine and Cedar
  • Available to fit a standard 6" x 6" post (inside dimensions measure 5-5/8" x 5-5/8") - Cedar only

Installation: Attach to the post by applying an exterior-grade construction adhesive to the inside of the three-sided section and sliding it firmly around the post. Apply an exterior-grade construction adhesive to the inside of the remaining piece and slide into place. Fill any gaps between the post and base trim by applying exterior silicone calking.


Post base trim is a trim molding for the base of a post. Post base trim is available in 4” x 4” and 6” x 6” sizes, three styles, and three wood species: pressure-treated pine, cedar and redwood. Our post base trim is cut to size, with three sides pre-joined. The fourth side can be easily slipped into place and attached with finish nails, staples or exterior-grade construction adhesive.

The complete Deckorators line is available at retail lumberyards, home centers and through distributors. For more information, visit our Where to Buy page or call 800.332.5724.

Consider using one of our experienced Deckorators Certified Pros. Only the most professional, reliable and skilled building professionals become official Certified Pros. By selecting a Certified Pro you can expect to receive the highest standards of service and installation of your Deckorators products. Check out our Locate A Contractor section.