How to Build a Brick Mailbox: A Comprehensive Guide
Adding a brick mailbox to your property not only serves a practical purpose but also enhances its curb appeal. This step-by-step guide will walk you through the process of building a classic brick mailbox, ensuring your correspondence arrives in style.
Materials Needed
- Bricks (around 100 standard bricks)
- Concrete mix (one 80-pound bag)
- Gravel
- Mortar mix (one 80-pound bag)
- Waterproofing sealant
- Trowel
- Level
- Tape measure
- Gloves
- Safety glasses
- Wheelbarrow
- Mailbox post (optional)
Preparation
Before you begin, ensure you have the necessary permits and check with your local post office for mailbox regulations. Choose a location for your mailbox that's convenient, visible, and at least 6 inches off the ground to prevent flooding. Mark out the dimensions of your mailbox using stakes and string.
Building the Base
The base of your mailbox will provide stability and support. Here's how to create it:

- Dig a hole 12 inches deep and 10 inches wide.
- Fill the hole with 4 inches of gravel for drainage.
- Mix your concrete according to the package instructions and pour it into the hole, filling it to the top.
- Insert a rebar or metal rod into the concrete for added strength, then allow it to cure for 72 hours.
Laying the First Course
Once the base is cured, you can begin laying bricks. Start by spreading a 1-inch layer of mortar on the base. Place your first brick on the mortar, pressing down firmly and using a level to ensure it's even. Continue laying bricks in a straight line, spacing them evenly and applying mortar to each brick's underside.
Building the Walls
As you lay each course of bricks, stagger the joints to create a strong bond. Use a trowel to remove excess mortar and ensure a smooth finish. Continue building up the walls, using a level to maintain vertical alignment. When you reach the desired height (typically 36 inches), allow the mortar to cure for 24 hours.
Installing the Mailbox Opening
Before laying the final course of bricks, install the mailbox opening. This can be a pre-made insert or a custom frame you've built. Ensure it's level and centered, then secure it in place with mortar.

Finishing Touches
Lay the final course of bricks, ensuring they're level and even. Allow the mortar to cure for 72 hours, then apply a waterproofing sealant to protect your mailbox from the elements. If desired, attach a mailbox post to the front of your mailbox for added stability.
Congratulations! You've now built a durable, attractive brick mailbox that will serve you well for years to come. Regular maintenance, such as cleaning and reapplying sealant, will keep your mailbox looking its best.























