Hardware
Post Hardware
Simpson Strong-Tie
$8-$40 eachPost Bases for Elevated, Rot-Free Post Connections
Post bases attach wood posts to concrete foundations while elevating the post bottom above the surface to prevent moisture contact and rot. Available in fixed and adjustable heights, they provide uplift resistance and lateral stability for long-term durability.
Key Features
- Elevates post above concrete to prevent rot
- Adjustable height options
- Uplift and lateral load resistance
- ZMAX coating for treated lumber
- Fits 4x4 and 6x6 posts
Specifications
Material: Galvanized steel (ZMAX) | Post sizes: 4x4
4x6
6x6 | Models: ABA
ABU
PBS
EPB series | Standoff: 1in to 7in adjustable | Anchor bolt: 1/2in or 5/8in
Best For
Deck post installation
Pergola post connections
Fence post anchoring
Porch column bases
Compatible Materials
4x4 and 6x6 posts
Pressure-treated lumber
Cedar posts
Concrete piers
Concrete footings
Pros & Cons
Pros
- ✓ Prevents post rot from ground contact
- ✓ Adjustable for uneven concrete
- ✓ Engineered uplift resistance
- ✓ Easy post replacement
Cons
- ✗ Requires anchor bolt in concrete
- ✗ Visible hardware at base
- ✗ More expensive than direct burial
- ✗ Must match post size
Installation Tips
Set anchor bolt in wet concrete using template, or use retrofit wedge anchor. Adjust height to level post. Use ZMAX with pressure-treated lumber.
Frequently Asked Questions
Not always required by code, but strongly recommended. They prevent rot, provide engineered connections, and allow future replacement.
Adjustable for uneven footings or sloped sites. Fixed when footings are precisely poured at uniform height.