How To Drain A Paver Patio

How to Drain a Paver Patio: A Comprehensive Guide

Paver patios are a popular choice for outdoor living spaces due to their durability and aesthetic appeal. However, proper drainage is crucial to prevent water accumulation, which can lead to damage to the patio and surrounding structures. This article provides a comprehensive guide on how to drain a paver patio, covering both sloping and flat patios.

Sloping Patios

1. Establish a Slope: Ensure the patio slopes away from the house or other structures to facilitate water runoff. A slope of 1/4 inch per foot is recommended.

2. Create a Drainage Channel: Dig a narrow trench along the perimeter of the patio. The channel should be sloped in the same direction as the patio and lined with gravel or perforated pipe to improve drainage.

3. Install Drain Pipes: If the drainage channel is not sufficient to handle heavy rainfall, consider installing drain pipes under the patio. These pipes will collect water and direct it away from the patio.

Flat Patios

1. Install Drainage Grates: Place drainage grates at strategic points on the patio to collect water. The grates should be connected to a drainage system or dry well.

2. Create a Dry Well: A dry well is a pit filled with gravel or perforated pipe that allows water to seep into the ground. Dig a hole large enough to accommodate the dry well and connect it to the drainage grates.

3. Slope the Mortar: When installing the pavers, slope the mortar joints slightly away from the center of the patio to encourage water flow. Seal the joints with a water-resistant sealant.

Additional Tips for Drainage

1. Use Porous Material: Choose pavers made of porous materials like permeable concrete or natural stone to allow water to pass through.

2. Maintain Joints: Fill any gaps between pavers with polymeric sand or pea gravel to prevent water from seeping into the base.

3. Consider a French Drain: If other drainage methods prove ineffective, consider installing a French drain. This is a perforated pipe buried in a gravel-filled trench that redirects water away from the patio.

Draining a paver patio is essential for its longevity and functionality. By following these guidelines, you can ensure proper water drainage and prevent costly damage. Remember to consult with a professional contractor for more complex drainage solutions or if you encounter any difficulties during the process.