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Home-improvement stores carry specialized sands to serve as binders for outdoor projects.
Chemically bound sand has the ability to expand and condense to allow for flexibility for materials as its sealing.
Play sand requires a topical sealant to promote the hardening process.
When you think of sand you might reminisce about sandcastles at the beach or playing in the sandbox as a child. But sand is used for more than recreational purposes. Hardening sand is used as a sealant for a variety of outdoor projects. It can serve as a deterrent for bugs to get through the seams of your patio, and it prevents weeds from popping up in driveways and walkways. It also gives your project a natural look and feel.
Choose your sand. It comes in a variety of forms, including: general play sand; a chemical-based sand; or organic sand, made up of natural materials such as grounded up plants. Any of these types of sand can hold up to extreme weather and provide a quality seal.
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Purchase play, chemical-based, or organic sand from your local home-improvement store. Sand comes in various sized bags and various square footage dependent on the project size.
Broom your sand evenly into the joints of your bricks or pavers to prepare for the sand to harden. Don't leave extra sand on top of your pavers or stones as it can dry and adhere to your outdoor materials.
Sweep excess sand away and ensure that the joints are filled evenly throughout your project area.
Turn on your water hose and spray the sand using a gentle mist. Wet the filler evenly until the sand is compact and fully saturated. Allow the sand to dry for 24 hours.