How to Lay Pavers on Concrete: A DIY-Friendly Guide

Got a boring concrete patio that's seen better days? Laying pavers over concrete is like giving your outdoor space a complete makeover without the back-breaking work of removing the old slab. It's a brilliant DIY project that can completely transform your backyard, adding value and style to your home.

First Things First: Is Your Concrete Ready?

Before you start dreaming about your new patio, you need to check if your concrete is up to the job. The existing slab needs to be:

• Stable and mostly level - minor hairline cracks are okay, but large fractures need repair first
• Sloping away from your house (about 1/4 inch per foot) to prevent water pooling
• Clean and free of oil, moss, and debris

If water tends to collect on your concrete, you might need to drill some drainage holes before starting. Think of it like checking the foundations before building - it's better to be safe than sorry!

The Two Main Methods: Sand-Set vs Glue-Down

When it comes to laying pavers on concrete, you've got two main options:

• Sand-set method (most common) - uses a layer of bedding sand
• Glue-down method - uses construction adhesive or mortar

For most DIYers, the sand-set method is your best bet. It's more forgiving and gives better drainage - perfect for our Aussie weather!

Step-by-Step: The Sand-Set Method

Here's how to lay pavers like a pro using the sand-set method:

• Lay down landscape fabric over the concrete - this stops weeds and helps with moisture control
• Spread a 1-inch layer of coarse washed concrete sand (not play sand!) and level it with a screed board
• Gently compact the sand to create a firm, even base
• Start laying your pavers from one edge, keeping them tight together
• Check your alignment and level regularly as you go
• Sweep polymeric sand into the joints to lock everything in place
• Lightly mist with water to activate the polymer (if using polymeric sand)
• Gently compact the whole surface with a plate compactor or hand tamper

Remember to use edge restraints around the perimeter to keep everything stable, especially if your patio has exposed edges.

Pro Tips for Success

Here are some insider tips to make your paver project a success:

• Always account for the extra height - your new patio will be about 2 inches higher than the original concrete
• Leave small expansion gaps along walls and other fixed structures
• Keep checking your slope as you work to avoid creating puddles
• If you're working near a driveway, make sure your new pavers transition smoothly

The glue-down method is better suited for small areas or when you need to keep the height increase to a minimum. It involves applying construction adhesive directly to clean, dry concrete before setting each paver.

Final Takeaway

Laying pavers over concrete is a fantastic way to upgrade your outdoor space without the massive cost and effort of removing the old slab. With the right preparation and the sand-set method, you can create a beautiful, durable patio that will last for years. Just remember: good preparation is key, take your time with the leveling, and don't skimp on the quality of your materials. Your new paved paradise is waiting!