Simpson Anchors
Simpson Strong-Tie FPBB44 None E-Z Base Black Powder-Coated Post Base for 4x4
$25.00Unit price /UnavailableVery low stock (2 units)Simpson Anchors
$17.28Unit price /UnavailableVery low stock (4 units)- 35% off
Simpson Anchors
Simpson Strong-Tie FPBS44 None E-Z Spike Black Powder-Coated Post-Base Spike for 4x4
$34.57$53.39Unit price /UnavailableVery low stock (4 units)

Simpson Strong-Tie Fence Post Bases
Simpson Strong-Tie fence post bases provide a simple, durable solution for securing 4x4 wood posts in a variety of outdoor projects. They're made to stabilize posts whether set in concrete, soil, or on existing slabs, helping prevent leaning, wobbling, and premature deterioration. By lifting posts off the ground or anchoring them firmly, these bases protect against moisture and rot, ensuring that fences, decks, and other structures remain square and secure over time.
Options include reinforcement plates for repairing weakened posts, retrofit bases for attaching posts to existing concrete, and ground-driven spikes for fast, no-dig installations. Using properly designed post bases saves time, reduces maintenance, and extends the life of outdoor structures.
Frequently Asked Questions
Can these post bases be used with treated lumber?
Can these post bases be used with treated lumber?
Yes. Simpson Strong-Tie bases are designed to be compatible with treated wood, ensuring durability without corrosion or weakening of the post connection.
Can I use a post base to repair a rotted or damaged post?
Can I use a post base to repair a rotted or damaged post?
Yes. Reinforcement plates allow you to restore strength to weakened posts without removing them or replacing surrounding concrete. This saves time and labor compared to full post replacement.
Will a post base prevent my fence from leaning over time?
Will a post base prevent my fence from leaning over time?
When installed correctly, post bases provide a stable, vertical anchor for 4x4 posts, reducing movement and leaning caused by wind, weight, or soil shifting. Proper fastening is key to achieving maximum stability.
What is the recommended spacing between fence posts?
What is the recommended spacing between fence posts?
Typically, fence posts are spaced 6 to 8 feet apart. However, the spacing can vary based on the type of fence, the materials used, and local building codes. It's always best to consult with a professional or refer to local guidelines to determine the appropriate spacing for your specific project.
How do I choose between a spike, retrofit base, or reinforcement plate?
How do I choose between a spike, retrofit base, or reinforcement plate?
Spikes are best for quick installations in dirt or gravel, retrofit bases are ideal for anchoring posts to existing concrete, and reinforcement plates are designed to strengthen posts that have started to weaken or rot. Consider whether the post is new, existing, temporary, or permanent.
How do I know the post base is properly installed?
How do I know the post base is properly installed?
A properly installed post base will hold the post plumb, resist lateral movement, and transfer weight into the concrete or soil effectively. All fasteners should be tightened according to the manufacturer's instructions, and the base should sit flush against the installation surface.