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Care & Maintenance: JANUSstone


JANUSstone is a combination of concrete and fiberglass. It is also known as GFRC (Glass Fiber Reinforced Concrete). Mixing these together creates a material better than the two separate components; it is a lighter and more durable product than traditional concrete, and combined with different finishes, it creates wonderfully designed pieces.

JANUSstone is water-repellant, rot-resistant, pest-resistant, frost-proof and easy to care for. In addition, this material can be formed into unique shapes and finished in a variety of ways for maximum versatility.

For additional protection on JANUSstone side tables, we install silicon rubber bumpers on the bottom. Silicon rubber bumpers help to protect the lower edge from chipping, but may not prevent all chipping.

JANUSstone planters can make a striking statement in an outdoor setting, but there are a few common sense tips to utilize these to their fullest potential. Before filling with dirt, first place a mesh screen or a layer of gravel over the drainage hole before adding soil to assure water can flow through the planter. For better drainage, elevate the planter slightly, providing an easier path for the water to flow out of the planter.

Care should be taken when placing or moving any of the JANUSstone items.


  • Dust with a soft cloth, rinse with clean water and dry to prevent water spots.


  • Wash with mild, pH-neutral soap such as Dawn® and clean water using a non-abrasive cloth or sponge
  • Clean any spilled liquids or other materials immediately


  • When efflorescence (salt deposits) occurs, wet and scrub the area with a nylon brush until the efflorescence is removed
  • During winter, leave the planters full of soil. Do not cover with plastic. It is recommended to raise JANUSstone planters to allow for proper water drainage