What is the minimum side lap distance for metal lath?

What is the minimum side lap distance for metal lath?

• A. 1/2 inch
• B. 1 inch
• C. 3/4 inch
• D. 1/4 inch

Answer: (A)

The main idea is that side laps on metal lath create a continuous, bonded surface for the plaster to grip. A one-half inch overlap is the minimum required so plaster can key into both sheets and the joint remains secure under shrinkage, vibration, and light movement. If the overlap is smaller, the seam can telegraph through the plaster or fail; overlaps larger than this are not typically required for standard jobs and can waste material. So the minimum side lap distance for metal lath is one-half inch.

The main idea is that side laps on metal lath create a continuous, bonded surface for the plaster to grip. A one-half inch overlap is the minimum required so plaster can key into both sheets and the joint remains secure under shrinkage, vibration, and light movement. If the overlap is smaller, the seam can telegraph through the plaster or fail; overlaps larger than this are not typically required for standard jobs and can waste material. So the minimum side lap distance for metal lath is one-half inch.