How To Lay A Flagstone Patio Over Concrete

Laying a Flagstone Patio Over Concrete: A Comprehensive Guide

Transforming your backyard into an outdoor oasis can be a rewarding and enjoyable experience. Adding a flagstone patio over concrete is a popular and practical way to do just that. Here's a comprehensive guide to help you achieve a beautifully paved patio in no time.

Preparations:

Before embarking on this project, ensure you have the following materials: flagstones, polymeric sand, leveling sand, concrete paver base, and a tamper. You'll also need tools such as a rubber mallet, level, tape measure, trowel, and broom.

Thoroughly clean the concrete surface to remove any dirt or debris. Use a pressure washer for optimal results.

Lay out the flagstones temporarily to estimate the coverage and identify areas where they may need to be cut or reshaped. Mark these spots with chalk.

Laying the Flagstones:

Apply a thin layer of concrete paver base to the concrete. This base will help distribute weight evenly and prevent settling.

Pour a 1-2 inch layer of leveling sand over the concrete paver base and spread it evenly using a rake or trowel.

Take each flagstone, spread a thin layer of polymeric sand on the back, and gently set it in place.

Use a rubber mallet to tap the flagstones into the leveling sand. Ensure they are level with each other and the concrete base.

Finishing Touches:

Once all the flagstones are laid, sweep polymeric sand into the joints between them. This sand will harden, locking the flagstones in place and preventing weeds from growing.

Use a tamper or a heavy object to compact the polymeric sand into the joints, ensuring a tight and secure fit.

Gently brush away any excess sand from the surface of the patio and enjoy your newly laid flagstone paradise.