Question

an eifs assembly may consist of all of the following except
plywood sheathing
foam insulation boards
metal lath
a 1/16 to 1/4 - inch thick base coat
a sprayed - on finish coat
question 45
efflorescence
is associated with water moving through masonry walls
can only appear on the cold side of a wall
only occurs in freezing climates
is an organic growth
never occurs on chimneys because of the heat

Explanation:

1. For the first question about EIFS (Exterior - Insulation and Finish System), it typically does not use metal lath. EIFS consists of a foam insulation board attached to the substrate (like plywood sheathing), a base - coat layer, and a finish coat. Metal lath is more commonly used in other stucco - type systems.
2. For the second question about efflorescence, it is a white, powdery deposit that forms on the surface of masonry, concrete, and other building materials when water moves through them and then evaporates, leaving behind dissolved salts. It is associated with water moving through masonry walls. It can occur in any climate where water is present in building materials and can appear on both the cold and warm sides of walls. It is not an organic growth and can occur on chimneys if there is water and salt present.

Answer:

1. C. metal lath
2. A. is associated with water moving through masonry walls