Protect Fence Posts from Weed Whacker, String Trimmer & Lawn Mower Damage
Fence posts are one of the most expensive parts of a fence to replace. Weed whackers, string trimmers, lawn mowers, moisture, and landscape equipment can slowly damage posts from the ground up, leading to exposed wood, cracking, rot, and premature fence failure.
Fence Armor® Full PostGuard™ provides durable 360° steel protection designed to absorb everyday landscape abuse while improving the appearance and longevity of your fence.
The 3” Tall PostGuard™ is ideal for homeowners and properties where grass is maintained at a typical residential height. For HOA properties, commercial buildings, mailbox posts, landscaper-maintained areas, or locations with taller grass and heavier trimming activity, many customers choose the 6” Tall Pro Series for additional coverage.
Manufactured from 22-gauge American G90 galvanized steel with a durable polyester powder coating, PostGuard™ is engineered for years of outdoor protection against trimming, mowing, moisture, and weather exposure.
Description & What Size to Order
Built from Galvanized Steel
Fence Armor® was developed through real-world testing. Aluminum proved too soft for repeated trimmer impacts, while plastic became brittle and faded from UV exposure.
That’s why Fence Armor® PostGuards feature:
- 22-gauge American G90 galvanized steel
- Durable polyester powder coating
- Rounded impact-deflection edges
- Color-matched installation screws
Built to Deflect Trimmer Damage
Fence Armor® PostGuard™ features rounded radius edges designed to help deflect weed-whacker and string trimmer line away from the post.
This helps:
- Reduce gouging and impact damage
- Minimize string breakage and kickback
- Protect exposed wood and rot barriers
- Improve long-term fence appearance
360° Full Protection
The Full PostGuard™ system wraps completely around the post for maximum protection.
Ideal for:
- Wood fence posts
- Vinyl fence posts
- Mailbox posts
- Pergolas
- Deck supports
- Ranch fencing
- HOA fencing
- Commercial fencing
- Playground equipment
- Swing Set posts
- Garden Structures
Pair PostGuard™ with RotGuard™ ground-line protection, CAP CLAW™ universal post caps, and EXPERT Stain & Seal™ for a complete fence preservation system.
Complete Fence Protection System
Fence Armor® products are designed to work together as a complete fence protection system.
Pair PostGuard™ with:
PostGuards stack cleanly and integrate beautifully into long-term fence preservation systems.
Installation
Installing Fence Armor® PostGuard™ is simple:
- Position the two interlocking halves around the post
- Slide the telescoping sides together for a snug fit
- Fasten using the included color-matched screws
For best protection, install the 3” PostGuard™ approximately 1” to 1½” above ground level. This places the centerline of typical weed-whacker contact directly on the steel guard instead of above it.
No special tools required.
More on Post Protector Size & Installation
FAQ
Will Fence Armor® stop weed whacker damage?
Yes. Fence Armor® PostGuard™ is engineered to absorb and deflect repeated weed-whacker and string trimmer impacts.
What does “telescoping design” mean?
Fence Armor® uses two interlocking steel channels that slide together to accommodate variations in actual lumber dimensions and irregular post sizes.
Does a 3½” guard fit a standard 4x4 post?
Yes. Fence Armor® sizing is based on actual post dimensions. A standard 4x4 post is typically 3½” x 3½”. Always measure before ordering.
Can Fence Armor® be installed on existing fences?
Yes. PostGuard™ is designed for both new fence construction and retrofit applications.
Pro Advice
