What is a water shield?

• A. A Hydraulic/Water Auger
• B. A Waterproofing Treatment Applied to the Post Prior to Setting
• C. Concrete Poured 2 Inches Above Grade and Sloped Away From the Post on All Directions
• D. Aluminum Flashing Attached to the Post Base

Answer: (C)

Water at the base of a post can wick into the wood and cause rot, so the idea is to create a barrier that directs water away from the post. Pouring concrete a couple of inches above grade and shaping it so it slopes away from the post in all directions provides a solid shield that sheds rainwater and soil moisture away from the wood. This protective cap prevents water from collecting at the base and minimizes moisture intrusion and decay, extending the life of the post.

The other options don’t provide the same full-base protection. A hydraulic/water auger is simply a drilling tool, not a shield. A waterproofing treatment on the post protects the wood but doesn’t stop water from pooling at the base or wicking up from the ground. Aluminum flashing can help redirect some water, but it doesn’t create the continuous base barrier that a concrete cap with proper drainage does.