Vinyl Post Caps
What Are RDI Vinyl Post Caps?
RDI is a well-known manufacturer of decking and railing accessories. Vinyl post caps from RDI are protective tops that snap or attach onto the top of vinyl deck posts (typically 4×4 or 6×6). They’re designed to match vinyl railing systems and give a finished, polished look.
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Unlike wood caps, vinyl post caps are made of synthetic PVC/vinyl — the same material used for vinyl decking and railing.
Key Features
1. Weather Resistance
- Highly resistant to moisture, rot, and insects. Vinyl doesn’t absorb water like wood.
- Ideal for areas with heavy rain or salt air (coastal locations).
2. Low Maintenance
- No need to stain or paint — you can simply wash them with soap and water.
- Color is integrated into the material (won’t easily fade or peel, especially in higher-end products).
3. Style Options
- RDI makes a variety of vinyl caps to match different railing aesthetics:
- Flat post caps: Clean, modern look.
- Pyramid or peaked caps: Slightly decorative and help shed water.
- LED post caps: Some models include integrated solar LED lights for nighttime illumination.
- Decorative profiles: Some have curves or molded trim detail.
- 4. Easy Installation
Most RDI vinyl post caps simply snap onto the post or secure with an interior PVC plug + exterior screw (depending on model).
- No complicated finishing work required.
Vinyl post caps are used for accentuating and protecting the tops of a variety of items, including fence posts and deck posts. Vinyl post caps are available in virtually any style, from ornate to plain. They are a great way to add a unique touch and keep your posts looking their best. Additionally, vinyl post caps provide protection from the elements, keeping the posts from warping, rotting, or water damage. They can also help keep animals, birds, and other critters from nesting in the post tops. Vinyl post caps require minimal maintenance and are generally easy to install and remove.
RDI Vinyl Post Caps
Our selection of RDI vinyl post caps lets you choose from many styles and 3 colors. White ~ Sand ~ Clay.
Classy Caps
Classy caps offers many styles also including the ball post cap!
We offer a huge selection of vinyl post caps to enhance your fence and have it stand out from the crowd. Choose from ball, solar post caps, pyramid, and flat top. You can easily upgrade to a decorative post cap, versa cap, or low voltage post cap at a minimal expense to give your fence a custom look. We provide fast shipping and 24/7 A+ customer service.
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