How to make a concrete countertop mix

Written by renae de leon
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When you are constructing a new business building, one of your expenses is going to be for countertops. You can save money by making them yourself using concrete. While labour intensive, these countertops will look great, resist stains, can be customised to complement just about any interior design and be durable. Before you start adjusting the design of your cabinetry to facilitate concrete countertops, you need to learn more about how to mix the concrete for these countertops.

Skill level:
Easy

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Things you need

  • Water
  • Concrete
  • Concrete colour additive
  • Concrete mixer

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Instructions

  1. 1

    Determine how much concrete countertop mix you will need. To figure out how many cubic feet of concrete you will need, you will multiple the length of the form by the width by the depth in inches. You will then divide this amount by 1,728. This will give you the cubic feet that you will need.

  2. 2

    Buy your supplies and rent your equipment. You will need 54.4 Kilogram of concrete per cubic foot you will be pouring and concrete colour additives. You can buy concrete at home improvement stores like the Home Depot and Lowe's. Concrete colour additives can be found at these stores as well, or you can buy them from special distributors like Davis Colors and Butterfield Color. The amount of colour additive that you will need to buy will vary depending on if you buy a liquid colour additive or a powder additive, as well as what brand of colour additive you buy. However, the amount of colour additive you use will be proportionate to the weight of the cement that you are mixing. To get the most uniform colour possible, rent a cement mixer. You can rent these from local hardware stores or from equipment rental businesses.

  3. 3

    Start your concrete mixer. Add in your concrete mix. Pour in one gallon of water per 54.4 Kilogram of concrete mix. Allow this mixture to combine for about 10 minutes and then add in your concrete colour additive. You will pour the colour liquid into the mixer, pour in powder colour mixes or toss in the colour in sealed bags (MixReady™). Allow to mix for at least 15 minutes but no more than 90 minutes.

Tips and warnings

  • You can save time by buying concrete mixes that already have the colourant added.

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