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Rubber Mulch Frequently Asked Questions

Frequently Asked Questions about Rubber Mulch

Is GroundSmart Rubber Mulch safe for children and pets?

Yes, absolutely. GroundSmart Rubber Mulch is 100 percent non-toxic and environmentally friendly. Multiple government and third-party studies have proven that recycled rubber is safe.

How much Rubber Mulch will I need?

You can use our Coverage Calculator (also found in the left column of most pages of the site) to calculate how much Rubber Mulch you will need for your project. If you are using our Rubber Mulch as a Playground Safety Surface, the depth necessary will vary based on the height of your equipment. A 6″ depth is certified for 16′ of Fall Height Protection. Landscaping uses can usually be accomplished using a 2″-3″ depth.

Where does the rubber come from?

GroundSmart Rubber Mulch is made of 100 percent recycled tires collected and processed by Liberty Tire Recycling, the nation’s leading tire recycler.

Does recycled rubber emit an odor?

No. Usually within 48 hours of installation any odor is gone.

Will GroundSmart Rubber Mulch erode?

No. Even in areas prone to erosion, GroundSmart Rubber Mulch will not wash out because it is heavier than wood mulch.

How long will GroundSmart Rubber Mulch hold its color?

Our Color-Lock Guarantee last for 12 years. In many environments, color lasts even longer.

How do I maintain GroundSmart Rubber Mulch?

Simply use a leaf blower to remove yard debris.

Does GroundSmart Rubber Mulch freeze?

No. GroundSmart Rubber Mulch does not absorb water, so it will not freeze.

What kind of insulation does it provide?

GroundSmart Rubber Mulch keeps soil 10 degrees cooler in the summer and 10 degrees warmer in the winter.

Is GroundSmart Rubber Mulch dirty?

No. GroundSmart Rubber Mulch is colored using a licensed process, which seals the rubber after the color is applied. Children will even stay clean while playing on GroundSmart Rubber Mulch in the rain.

Will GroundSmart Rubber Mulch cause stains?

No. Unlike organic mulching materials, GroundSmart Rubber Mulch will not stain clothes or cement.

Is rubber mulch a superior shock-absorbing safety surface material?

Yes. A 6-inch layer of GroundSmart Rubber Mulch will cushion a child’s fall from as high as 16 feet – better than all other loose surface materials, according to the United States Consumer Product Safety Commission and numerous state and private agencies.

What are the Shipping Costs?

All products in our online store include shipping to any destination within the Continental United States. For orders outside the Continental US, or for orders over 100,000lbs, please contact us for additional information.

Mocha Brown Rubber Mulch Supersack bulk package

What is a Super Sack?

You can take a look at one on the right.

Is GroundSmart Rubber Mulch flammable?

GroundSmart Rubber Mulch is not flammable. Tire chips were tested in 1995 in accordance with the Federal Hazardous Substance Act to determine whether this material would be considered “flammable” (a material is considered flammable if it ignites and burns with a self-sustained flame at a rate greater than 0.1 inches per second along its major axis). Per these test results, scrap tire material is considered non-flammable.

What if a child swallows a rubber chip?

If a piece of rubber is swallowed, it should not cause any acute or chronic problems. Short-term issues, such as an upset stomach will be a function of the amount of rubber swallowed. As to the fate of the rubber chips swallowed, they are eventually evacuated from the body, just like any other non-digestible material.

Has GroundSmart Rubber Mulch been certified by any outside agencies?

GroundSmart Rubber Mulch meets all of the criteria established by the International Playground Equipment Manufacturers Association. GroundSmart Rubber Mulch is also compliant with the Americans with Disabilities Act.

What does the EPA have to say about rubber mulch?

Please click the following links to read what the United States Environmental Protection Agency has concluded:

Ground rubber applications

Recycled rubber products in landscaping applications

“Greenscaping” your lawn and garden

Frequently Asked Questions

Does the use of rubber mulch reduce the need for herbicides?

Yes. Learn more from this article in LandscapeOnline.

How are state governments using recycled rubber mulch?

Here are a few examples:

Maryland is conducting studies using rubberized asphalt, rubberized natural grass athletic fields, rubber mulch, and green roofing.

Kentucky is providing matching grant funds for projects that promote the use of recycled waste tires for athletic fields, playgrounds, and other applications.

Colorado provides incentives for products and projects that use tire-derived materials. So far funds have been used for athletic fields and equine facilities.

Is there any research about using rubber mulch on golf courses?

Yes. Click on this link to see the results of a Canadian study. Also, The University of Florida has started doing research on using rubber mulch on athletic fields and golf courses.


  • tammy kallam

    is the black mulch hotter on a child’s feet compared to the other colors?

    • GroundSmart

      Based on an informal temperature study LTR Products conducted on the various colors of rubber mulch during a heat wave, the brown and red rubber mulches were determined to be the coolest colors. Black rubber mulch was a little warmer than brown and red. This is consistent with the impact of darker colors on many different materials. We recommended that children wear shoes while enjoying a playground with any type of safety surface, including rubber mulch

  • Edward

    What type of ground prep is necessary before laying down the rubber mulch? thanks

  • D A

    How many yards are in a ton of rubber mulch?

    • GroundSmart

      1 Ton of GroundSmart Rubber Mulch equals around 3 cubic yards.

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