Loosely spread the sand over the area bound by the runner boards, then screed the sand using the notched screed board on the running boards removing high spots and filling low spots. Commence at a straight fixed edge if possible. Start laying pavers in the desired pattern. There are a variety of different paving patterns you may like to explore but keep in mind some are easier than others. When the laying of pavers and closure units is complete, pavers should be compacted and brought to level by not less than three passes of a high frequency low amplitude plate compactor.
The compactor should have sufficient area to simultaneously cover 12 units, and its metal base should be covered to prevent it coming into direct contact with the surface of pavers. Use a 12mm plywood sheet or a thick rubber backed carpet square attached to the base of the compactor to provide a cushioning effect. A thin layer of joint filling sand spread evenly over the pavers prior to compaction will aid the movement of the compactor and further minimise surface damage.
When the section is finished, brush clean, white washed dry sand into all joints until filled. The purpose of this digging is twofold. It exposes area for the pavers to nestle into, and it clears loose dirt from the installation site.
Removing this layer provides a strong foundation for your paver base. The more compressed your subgrade soil is, the less it will shift and settle over time. This will help keep your pavers level and in place for longer. In addition to removing loose soil and compacting the subgrade soil, remove any grass, roots, large rocks or other debris from the paver installation site.
This gives you an even surface to layer and build upon. The depth of your subgrade excavation will depend on the type of soil you have at the paver site. The different soil classifications include:. Granular soils make strong subgrades that drain well, whereas clay soils are weaker. For that reason, the Interlocking Concrete Pavement Institute recommends a seven-inch subgrade thickness for granular soil and a nine-inch subgrade for clay soil. Be sure to match your soil with your excavation depth to keep your base sturdy.
This will prevent water buildup on the pavers themselves and help keep water away from your home. As detailed above, the best paver base is a quarry processed crushed stone subbase and a washed concrete sand base.
For best results, use a dense grade stone aggregate and concrete sand that complies with American Society for Testing and Materials standards.
Talk to your supplier to make sure your materials align with these standards. To calculate the amount of sand or crushed stone you should purchase, the Interlocking Concrete Pavement Institute recommends the following guidelines for every square-foot area:. These machines look like small, simplified push mowers and are typically manually operated.
Their engines vibrate a base plate, which can be used to compress your subbase particles closer together. Vibrating plate compactors come in a variety of sizes, so be sure to rent a machine that makes sense for the size of your paver project. For maximum effectiveness, complete your compaction one thin layer at a time. Slightly wetting your crushed stone subbase may aid the compaction process. It is standard to use a four-inch crushed stone subbase over granular soil and a six-inch subbase over clay soil.
These thicknesses work well for everyday pedestrian traffic. If your pavers are located around a pool or will receive vehicle traffic, your subbase should be six to eight inches thick. You can use a cement mixer, or a large tub or bucket.
To check the mix is thick enough, pick some up and mould into a ball. When you let go, it should retain its shape without oozing water or falling apart.
Then, lower your first paving slab into position. Ideally it wants to sit 15mm in the mortar. Repeat this process, leaving a mm gap between each paving slab, until your patio is covered. Property for sale in Western Cape. Property for sale in KwaZulu Natal. Rest of South Africa. Join Our Team. Agent Zone. Download the App. Cookie Notice We use cookies that are essential for this website to function and to improve your user experience.
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