Dry or Mortar Set Installation?

​

Are you considering adding a new patio to your spring plans? Whether you're planning to build a fresh patio, walkway, or outdoor seating area, or if you're looking to enhance your current setup, flagstones offer a durable and visually appealing option that can enhance the attractiveness of any landscaping. Spring presents an ideal opportunity to begin a new project that will provide years of enjoyment in your outdoor space.

​

Remember to read the 5 Problems with Stamped Concrete before leaving this page.

​

What's the Next Step?

​

Once you've determined the location for your new patio or other hardscaping elements, the next decision to make is the type of installation you prefer. Mortar-set installation is the most common, but some individuals prefer what's known as dry-set installation.

​

What's the Difference?

​

Dry-set flagstones involve skipping the use of mortar, resulting in a dry-set installation. To achieve optimal results, you must first clear the ground where your patio or walkway will be located. This process involves digging and clearing a layer several inches deep, followed by filling the cleared area with sand or gravel. Finally, the pavers are placed on top of the sand in your desired pattern.

​

Mortar-set or Wet-set Flagstones

​

For this method, you will need either an existing concrete slab, such as an existing concrete driveway, or a newly built layer of compacted sand and gravel. The goal is to create a smooth, solid base for the installation. Wet mortar is mixed and evenly applied over the base. Subsequently, the pavers or stones are laid on the wet mortar and allowed to dry. To complete the job, mortar or grout can be added to fill any gaps between the stones.

​

Which is the Right Choice?

​

The choice between dry-set or mortar-set depends on your specific circumstances. Factors to consider include desired durability, maintenance requirements, and overall costs. Begin by examining the advantages and disadvantages of each method.

​

Pros of Dry-Set Installation:

​

• Faster and easier installation process.

• Quick and easy repair or replacement of broken or lifted stones.

• Some prefer the loose, "unfinished" look of a dry-set patio or walkway.
   

Cons of Dry-Set Installation:

​

• More prone to buckling and heaving during freeze-and-thaw cycles.

• Without sealant, sand may track into the house and yard.

• Not as durable as wet-set installation, typically lasting about 10 years.

• Moisture can cause stones to shift out of place.

• Continuous replacement of sand and gravel may be necessary.
   

Benefits of Wet-Set Installation:

​

• Upscale and elegant finished appearance.

• Greater durability, often lasting up to 50 years with minor repairs.

• Flexibility in grout colors for a distinctive look.

• Provides a secure base in high-traffic areas or around pools.

• Ideal for irregularly shaped stones or pavers.
   

Cons of Wet-Set Installation:

​

• Repairs may require professional masonry assistance.

• Initial installation costs can be higher due to labor intensity.
   

5 Problems with Stamped Concrete

​

Stamped concrete is a poured concrete slab adorned with a design or texture mimicking the appearance of pavers, natural stone, or other materials. It is often enhanced with coloring or dye for added visual appeal. Despite being a more cost-effective option compared to pavers, stamped concrete offers superior aesthetic value over regular concrete. Nevertheless, there are several considerations to ponder before opting for stamped concrete:

​

1. Cracking: Like any poured concrete, stamped concrete is prone to cracking and shifting over time due to exposure to freezing and thawing cycles.
    

2. Slipperiness: Stamped concrete may become slippery, particularly when wet, often due to the surface finish applied during installation.
    

3. Color accuracy: Achieving precise coloring on a colored patio can be challenging. While some patios are sprayed with a sealer/color agent post-pouring, this method may lead to peeling over time, necessitating resealing every few years. Additionally, the dyeing process at concrete plants may result in slight color variations, potentially causing unexpected discrepancies and additional costs for the customer.
    

4. Repair difficulty: Once poured and cured in place, stamped concrete becomes permanent, making it challenging to rectify surface imperfections or issues like chipped corners, edges, or puddling. Remediation typically requires cutting out and replacing the affected area or redoing the entire project.
    

5. Limitations on ice removal: Stamped concrete cannot withstand the use of salt for ice removal, as the chemical compound can cause chipping and fracturing of the surface. This limitation complicates snow and ice removal, particularly on textured surfaces that impede shoveling.
    

Our Recommendation:
 

At Illinois Concrete, we recommend mortar-set installation because we've witnessed its effectiveness. Mortar-set flagstone offers a low-maintenance solution to add a beautiful, upscale look that complements any landscape design. Wet-set installation is also preferable for areas with high traffic or frequent exposure to moisture.

​

Some individuals initially opt for dry-set flagstone but later switch to mortar-set after realizing its superior durability, safety, and aesthetic appeal.

​

When you're ready to begin your new installation, contact Illinois Concrete. As a third-generation masonry company with a stellar reputation, we specialize in brick, flagstone, fieldstone, and concrete projects that will transform your backyard into an inviting oasis.