Increase your chances of fabricating a crack-free countertop surface by using a concrete formula made specifically for the job. Quikrete Countertop Mix is a 5,000-psi concrete with super plasticizers and other additives designed to make these critical pours a success, says the company. At $12 per 80-pound bag, the mix costs about three to four times as much as standard bagged mix. Quikrete, 800/282-5828,

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