Great Point Flat Azek Post Cap Composite

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Item# Great Point Flat Azek Post Cap Composite

Since 1988, The Nantucket Post Cap Company has been creating fine post caps, finials, arbors, gates, benches, tables, and pergolas made out of the highest grade of redwood and cedar, and now composite Azek material.  Azek Post Caps are a great way to protect and enhance your fence post or deck post without the worry of future maintenance.

Azek post caps must be painted in order to ensure proper performance over the years.  Azek post caps accept paint easily and hold paint much longer than traditional wood post caps.  Azek material is a perfect mix of beauty and functionality.  It looks, feels, cuts, and shapes like wood, only it does not rot or deteriorate.

All Nantucket Flat Azek Post Caps can be used in conjunction with an Azek finial top (sold separately).

Great Point Azek Composite Post Cap:

  • Impervious to insects and moisture
  • Will not rot, split, twist or warp
  • Looks and feels like wood
  • Accepts paint easily for a custom color
Due to the manufacturing process, when Azek is cut, the heat generated by the blade leaves a yellowish hue on the surface.  We strongly recommend painting the product white or any other color of choice (this is also needed for warranty).  The texture of the Azek Post Cap is also slightly different compared to standard Azek boards.  This happens because Azek is cut at an angle which exposes the naturally rougher interior of the product.
Azek post caps are special order items.  Please see the shipping information tab below for further details.

How to choose the correct Azek post cap size:

Nantucket Post Cap LogoNantucket Post Caps are sized according to the actual physical measurement of your deck or fence post.  All post caps are made 1/8" larger on the opening then the actual post size you specify.  For example, if your 4x4 standard post truly measures 3-1/2" x 3-1/2", then you would choose that size and your cap would come with an inside measurement of 3-5/8" x 3-5/8". 

All Nantucket Post Cap products are made in the U.S.A.

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Total Price:$26.86
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Product Care


AZEK composite material does not require paint for protection, but accepts and holds paint very well.

  • Use a 100% acrylic latex paint with a Light Reflective Value (LRV) of 55 or higher
  • For darker colors (LRV of 54 or lower), paints specifically designed for such applications must be used, such as Sherwin-Williams VinylSafe™ coatings
  • Follow the paint manufacturer’s recommendations to apply
  • AZEK surfaces must be clean, dry, and void of any foreign material such as dirt, oil, grease or other contaminates that may come from normal handling, storage and/or installation prior to painting.
  • Moisture cycling is a main reason for paint failure on wood. Since AZEK material absorbs no moisture, paints last longer on AZEK products than it does on wood
  • Since AZEK products have almost no moisture absorption, paints may take longer to cure on AZEK material than on wood. Generally paints on AZEK products will be dry to the touch quickly, but may take up to 30 days to fully cure depending on the humidity and temperature