exposure line

exposure line

An imaginary line drawn across a wood shake, dividing it so that the area above this line is the same area as that below it; the area below the line is that portion of the shake exposed to the weather.
References in periodicals archive ?
The exposure line is the location where the bottom edge of the shingle placed above will rest.
Comparing its 9-by-31/2-inch footprint to that of a conventional UV exposure line, CreoScitex said two or three TrendSetters may fit into existing space, providing speed and backup similar to a multi-imager Newsetter line.