Polymeric Sand: The Final Detail to Finish Your Flagstone Patio

Flagstone patios are possiblythe classiest surface of all hardscape options. Adding a flagstone patio to your backyard will definitely keep you ahead of the Jones’s. There is, however a dirty little issue that can rear its head after the installation is complete and the contractor has gone on their way.

In the northern climate that we live in, mortar between the stones is not an option as it will crack from the freezing and thawing. For many years, the only other option was to use a loose aggregate between the stones. This would look good when the project was completed but after foot traffic and a few rain storms, the aggregate would migrate onto the stone surface and make for a gritty mess. Not to mention the weeds that would start to grow after a time.

There is, however another option these days. A material, known as polymeric sand bridges the gap between mortar and loose aggregate. This material is swept into the joints between the stone and then water is applied. After the sand dries, the polymers, which are incorporated with the sand, create a hard, yet flexible material that won’t crack during winter and won’t migrate unto the stone from rain and traffic.  Weeds are not able to grow through polymeric sand as well.

Polymeric sand costs slightly more than regular aggregate but the extra expense is well worth it down the line. With multiple color choices, polymeric sand will also make the completed patio look magnificent.

4 comments (Add your own)

1. Kevin Yontz wrote:
I just put down a flagstone patio 15 by 23 with polymeric sand put a tarp on it waited about 24 hours sprayed off surface and then it rained the next day some bricks was white from the haze.I tried to sray off with hose but was causing the sand to come out .Can I refill the missing sand with new and rewet. Will the sand reharding like before .It has rained for 3 days on and off the material is a little soft is the normal and will it dry out when it gets warm and sunny.

Tue, May 1, 2012 @ 7:22 PM

2. Sandrine wrote:
If you or someone you know has a metal docetter run it over your old driveway to see if there is mesh or rebar in it. Or you can start on an edge and see if you run into any. If it does your in for a lot of work even if you rent a skid steer for the day. If it doesnt it will break apart surprisingly easy. I do concrete work for a lving and if a driveway has mesh or rebar in it I hire a guy to come in and tear it out with his excavator. He charges me around a buck a foot. Hes done in a couple hours. Worth every penny. If it doesnt have mesh or rebar I do it with my skid steer, sledge hammer and a pry bar. Get under a section And start breaking it up at the furthest point away from your bucket to closest to the bucket. A couple pops with your sledge and it breaks. I think its fun. Then just scoop it up with your bucket. good luck

Sun, August 5, 2012 @ 1:47 PM

3. Utami wrote:
HiThanks for your cool tutorials. Just woendred if you could split the tutorials in 10 minutes parts as well, my connection is not that stable to play the whole video. it disconnects in the middle most of the times and I have to load it from the scratch which is a pain considering my slow connection.

Sun, August 5, 2012 @ 1:59 PM

4. Phyl Powell wrote:
What can I put on my flagstone entryway after I wash it to make it shiny?

Mon, May 4, 2015 @ 1:30 PM

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