Design

• Pavers are molded from concrete or carved from brick or stone. You have an array of colors and shapes to choose from when selecting the pavers for your new patio surface. Consider purchasing interlocking pavers for an intricate pattern. Rectangular and octagonal blocks are two examples of typical pavers shapes. Once you have your pavers, dry-lay them on the surface to create a pattern of your own or familiarize yourself with the layout.
  
  

Installation

• You must spread a layer of mortar over the patio to adhere the pavers to the concrete. Working with mortar can be messy if you're not prepared. Spread the mortar in small, manageable sections at a time so you can set the pavers before it starts to dry. Keep a bucket or clean water and a cloth handy so you can wipe any drops as you work. Securing pavers over concrete is a two-part process. Once the pavers are laid and allowed to dry for two days, the joints must be filled with grout to hold the pavers in place.
  
  

Maintenance

• A paver patio laid over concrete benefits from the strong, long-lasting foundation. Mortar-set pavers are less likely to shift out of place under traffic or due to dry heaves, but the surface does require light maintenance. Sweep off fallen debris regularly to prevent it from hardening to the surface. Apply a coat of sealant every other year to slow fading and protect the grout from water damage.
  
  

Considerations

• Laying pavers over concrete is efficient. It allows you to focus resources and energy on the new paver surface, but it's important to examine the quality of the concrete before using it as a base. If the concrete has large cracks caused by a frost heave or lack of expansion joints, these problems can eventually form cracks in the surface. Call a professional to inspect the patio if you're unsure of the quality of the installation.