Use this on-line estimator to determine the amount of Roadware 10 Minute Concrete Mender™or other Roadware products needed to make your repair. The estimator program is based on mathematical calculations and will give a rough estimate in 300x300ml cartridges or gallons needed to repair a crack or spall. Click here for the metric version.

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Enter length in feet. Enter width and depth in inches. Enter fractions with the decimal equivalent. 1/4″ = .25 and so on.

Sand: One gallon of 40-30 medium silica sand weights about 13.3 lbs. If you use one gallon of Concrete Mender with a 2 to 1 sand ratio. you will need 2 gallons of sand or 26.6 lbs.

You can also figure about 50 pounds of sand for every case (12) of 300 x300ml cartridges.

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