Marthas Vineyard Post Topper by Nantucket Post Caps
Overview
The Martha’s Vineyard Non‑Slip Over Post Cap is a wood post cap made by Nantucket Post Cap that slides over the top of your post to shield the end grain from weather and add a tidy, architectural detail. It’s part of Nantucket’s “non‑slip over” post cap line, meaning it’s shaped to fit snugly without internal molding — making it simple to install and suitable for a range of post sizes.
Materials & Construction
Clear Cedar
- Made from premium clear Western Red Cedar, both known for outdoor durability and natural resistance to moisture and insects when finished properly.
- Constructed from one‑piece, solid wood — there’s no separate molding trim under the cap, just a clean, single cap that sits on the post.
Non‑Slip Fit
- The “non‑slip” name refers to the simple slip‑over design: the cap fits slightly larger than the post so it slides on easily and rests securely.
- Opening is generally 1/8″ larger than the post to allow for wood swelling outdoors.
Sizes & Fit
- Available for a wide range of actual post dimensions from approximately 3‑1/2″ up to 6‑1/2″
- Be sure to measure the actual outside width of your post before ordering — these caps are sized to match real measurements, not “nominal” lumber sizes.
Installation
Simple, Minimal Assembly
- Designed to slip over the post top — no complex assembly or internal trim pieces to install.
- You can secure the cap with exterior marine adhesive (e.g., 3M 5200) and/or stainless‑steel nails if you want extra holding power.
Finishing Before Installation Is Recommended
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Because this is unfinished wood, applying a sealant, stain, or paint before installation will dramatically extend its life and help resist cracking, checking, and moisture damage.
About this product...
The Marthas Vineyard cedar post cap topper are made by true craftsmen. Each and every post cap is made by hand. The highest quality clear cedar is used to create these post caps. They are truly one of a kind. This post cap is designed with a slight pyramid top.
SIZES:
- 3-1/2"
- 3-3/4"
- 3-1/2" x 45-1/2"
- 4"
- 4" x 6"
- 4-1/2"
- 4-3/4"
- 5"
- 5-1/2"
- 5-3/4"
- 6"
- 6-1/2"
MATERIAL:
- Cedar
Click HERE for Size Chart:
Click HERE for Cedar care: