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 ?
Designer Jayson Brunsdon acknowledged that dress double-ups were embarrassing, but he wasn't sure how year 10 and 12 girls have the budget to purchase one-off dresses for formals.
Just a few such double-ups when you are hitting back at a bully and you will soon be well on your way to victory.
Two double-ups when play got three-handed put him in position to contend, and he got hot at the right time.