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2 min read

A Proper Base Makes A Difference

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ColdSpring USA Provides Four Methods for Paver Setting

Stone pavers can provide a long-lasting, durable and beautiful material for landscape designs in public and private spaces. However, the way those pavers are set can make all the difference.

If you want your pavers to last, a strong foundation is crucial. Pavers can crack or become uneven if the wrong paver base is used or it is improperly installed. Understanding the differences in installation methods and what base to use in landscape paving is essential for a successful project. Ultimately, discussing your paving project with an experienced stone supplier will help ensure its successful completion and maintain its beauty and performance for many years.

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It would be a mistake to think that you don’t need a paver base. Laying pavers without a base will lead to a disappointing outcome. If the pavers are unable to support the weight and pressure placed on them and have a lack of adequate drainage, the pavers will crack and deteriorate.

What is the Best Material to Put Under Pavers?
Many factors contribute to the right choice of base material and installation method, including geographic location, drainage requirements, planned use and more. Materials to put under pavers include mortar, sand, bituminous materials or pedestals.

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Should I Lay Pavers on Sand or Mortar?
This depends on several factors. The mortar set method is most popular and is typically used in pedestrian or vehicular areas where a rigid system is required. The joints are grouted as part of a mortar system. Mortar also provides a degree of flexibility to the setting bed, enabling the effective setting of large and irregular-shaped pieces. In many areas of the United States, mortar systems provide a long-lasting, high-performing setting system. Evacuating surface water is important in a mortar set installation, so proper drainage is important.

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Can You Use Sand For a Paver Base?
Yes, you can use sand for a paver base. A sand set installation method may be best if a concrete slab is not an option. This system offers permeability and some flexibility.

What Kind of Sand Goes Under Pavers?
Polymeric sand may be used to fill the joints and reduce movement. Repair is usually easier and more economical than it is with a mortar system. Like other methods, uniform support of the paver is critical. If the water cannot properly drain from a sand set system and gets underneath the stone pavers, the liquid will eventually move the sand and create a rocking scenario, compromising the pavers’ durability.

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What is the Best Installation Method in Cold Climates?
The bituminous set installation method is growing in popularity. Since it is oil-based and less rigid than mortar, a bituminous set installation flexes and moves more easily with freeze-thaw cycles. Thickness tolerance of the paver is critical—a bituminous system does not allow for paver height adjustments like mortar or sand systems. Therefore, smaller piece sizes are a common way to accommodate this.

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Which Installation System Should I Choose for Good Drainage?
Pedestal systems can work well in many environments because they do not rely on a mortar, sand or a bituminous setting bed. A pedestal set system, ideal for fountains and reflecting pools, feeds water through the paver joints, providing drainage beneath the surface of the paving. Depending on the paver size, pedestal set systems may require thicker pieces of stone than other methods, such as a mortar or bituminous set system. Pedestal set systems are often used in rooftops and plazas at the street level—anywhere draining or eliminating water is a concern.

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Get In Touch With...

Craig Gerber
Regional Sales Manager For California, Nevada and Arizona

Phone: (951) 549–9042

Bryce Kock
Phone: (830) 730–6765


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