Screed boards are used in concrete construction as a tool to level and create a grade that allows water to drain properly and look good. Grade is normally predetermined in the designing of the forms, with an offset level typically away from a building or other objects or towards a drain. screed boards can be made of many different types of materials. some can be as simple as a very straight 2×4, or a nice metal one (typically aluminum). very nice screed boards also can come equipped with a built in level to make sure you are maintaining the correct level, like this on from Milwaukee Tools.

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