What Kind Of Bedding Sand For Pavers

What Kind of Bedding Sand for Pavers

When installing pavers, choosing the right bedding sand is crucial for ensuring a stable and long-lasting surface. Bedding sand provides a layer of support beneath the pavers, helping to distribute weight and prevent shifting or sinking. Here are the essential aspects to consider when selecting bedding sand for your paver project:

1. Grain Size

The ideal grain size for bedding sand is between 0.02 and 0.04 inches (0.5 to 1 mm). This size range promotes proper compaction and allows for adequate water infiltration while preventing excessive voids or movement. Smaller grains may compact too tightly and restrict drainage, while larger grains may not provide sufficient support.

2. Angularity

Angular bedding sand is preferred over rounded sand. Angular grains interlock and create a more stable base, reducing the risk of paver movement. Rounded grains have a tendency to roll, which can result in settling and unevenness.

3. Fines Content

Fines are particles smaller than 0.075 mm (No. 200 sieve). High fines content can clog the spaces between pavers and prevent proper drainage. While some fines are necessary for compaction, excessive amounts can weaken the bedding layer and increase the risk of settlement.

4. Compaction

Proper compaction of the bedding sand is essential for a durable paver surface. The sand should be compacted to at least 95% of its maximum dry density. Compaction can be achieved using a plate compactor or a hand tamper. Over-compaction should be avoided, as it can crush the sand grains and reduce stability.

5. Drainage

The bedding sand should allow for proper drainage to prevent water from pooling beneath the pavers. This can be achieved by choosing a sand with good permeability. The ideal drainage rate is around 2 inches per hour.

6. Cost

Bedding sand is typically sold in bulk by the cubic yard. The cost will vary depending on the size, quality, and availability of the sand in your area. It is important to compare prices from multiple suppliers to find the best deal.

7. Availability

Before purchasing bedding sand, ensure that it is readily available in your area. Local quarries or sand suppliers should be able to provide the required quantity and quality of sand. Consider the delivery costs and lead times to avoid delays in your project timeline.

Recommended Bedding Sand Types

Based on the criteria discussed above, the following types of sand are commonly recommended for paver bedding:

Masonry sand (also known as paver sand)
Concrete sand (with low fines content)
Crushed stone screenings (manufactured sand)

By choosing the right bedding sand and following proper installation techniques, you can create a stable and attractive paver surface that will last for many years to come.