double up

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double up, double back

A method of applying plaster; first the plaster base coat is applied; then this is covered with plaster from the same mix before the base coat has set. A form of two-coat work.
References in periodicals archive ?
Bring Double Up to more grocery locations (up to 50) by 2018.
Since 2009, Double Up has expanded from five farmers markets in Detroit to more than 150 sites across Michigan, benefitting more than 300,000 low-income families and more than 1,000 farmers.
Double Up is the first incentive program to operate statewide (Michigan is the 9[sup.