Laying bricks outside, particularly for projects like a patio, is commonly done using the sandset method. This approach is considered one of the easiest DIY methods for creating a durable and attractive brick surface.
The Sandset Method for Laying Bricks
The sandset method involves creating a stable base layer and then laying the bricks directly onto a bed of sand. The joints are then filled to lock the bricks together. Here's a breakdown of the process:
1. Prepare the Base
First, prepare the area where you plan to lay the bricks. This involves excavating the area to the required depth and ensuring the subgrade is compacted and sloped correctly for drainage.
2. Lay the Base Layers
According to the sandset method, you build up the base over the prepared ground:
- Compacted Gravel: Lay a layer of compacted gravel. This provides a stable foundation and helps with drainage.
- Landscape Fabric: Place landscape fabric over the compacted gravel. This prevents the sand layer from migrating into the gravel over time.
- Smooth Layer of Sand: Spread a smooth, even layer of sand over the landscape fabric. This sand bed is where the bricks will be laid. Ensure the sand is level and smooth.
3. Lay the Bricks
- Place Bricks on Sand: The bricks are laid directly on the smooth layer of sand. You can arrange the bricks in various patterns, such as running bond, herringbone, or basket weave. Gently set each brick into the sand bed, ensuring they are level with neighboring bricks.
- Cut Bricks (If Needed): Use a brick saw or splitter to cut bricks for edges or specific patterns.
4. Finish and Lock Bricks
- Sweep Sand into Cracks: Once all the bricks are laid, spread a layer of sand over the top and use a broom to sweep the sand into the joints between the bricks.
- Use Polymeric Sand: To lock the bricks in place and create a durable surface, sweep polymeric sand into the cracks between the bricks. Polymeric sand is a special type of sand mixed with additives that cause it to harden when moistened.
- Activate Polymeric Sand: Follow the manufacturer's instructions to wet the polymeric sand, typically by lightly misting the surface with water. This activates the polymers, causing the sand to bind together and lock the bricks firmly in position.
By following these steps, you can successfully lay bricks outside using the straightforward sandset method, creating a stable and long-lasting surface like a brick patio.
