RotGuard™ Ground-Line Wood Post Protection

Protect fence posts, deck posts, pergola posts, mailbox posts, agricultural posts, and structural timbers from the most common cause of wood post failure: ground-line rot.

RotGuard™ is a self-adhesive SBS-modified bitumen post wrap engineered to protect the critical soil-line zone where moisture, oxygen, fungi, and decay organisms are most active.

By creating a durable waterproof barrier around the post, RotGuard™ helps reduce moisture intrusion and protect the area where wood posts most commonly fail.

Whether you’re building a fence, deck, pergola, pole barn, gate system, or commercial project, RotGuard™ helps protect your investment before it goes into the ground.

Why Posts Fail at Ground Level

Most wood posts do not fail above ground or deep below grade.

They fail at the soil line where:

• Moisture remains trapped

• Oxygen is present

• Soil organisms thrive

• Temperatures support fungal growth

• Freeze-thaw cycles stress the wood fibers

Even pressure-treated lumber and naturally durable cedar can deteriorate when exposed to these conditions over time.

Engineered Polymer Protection

RotGuard™ is manufactured using SBS (Styrene-Butadiene-Styrene) modified bitumen, a polymer-enhanced waterproofing membrane used in demanding commercial applications where flexibility, adhesion, and long-term performance are critical.

Unlike rigid coatings or heat-shrink sleeves, RotGuard™ cold-bonds directly to the wood surface and remains flexible as the post naturally expands and contracts through seasonal changes.

The membrane is designed to:

• Conform tightly to wood surfaces

• Embed into the wood grain

• Maintain continuous soil-line contact

• Resist moisture penetration

• Move with the wood over time

This is not simply a coating. It is engineered ground-line protection designed to stay bonded where protection matters most.