If you are using a mason's line to build a wall, how far should the string be from the wall?

If you are using a mason's line to build a wall, how far should the string be from the wall?

• A. 1/16 inch
• B. 1/8 inch
• C. 1/4 inch
• D. 1/2 inch

Answer: (A)

A precise, nearly flush reference is essential when using a mason's line, so the string should be about one-sixteenth of an inch away from the wall. This tiny clearance lets the line serve as a true guide for the finished face while accommodating the small amount of mortar that will fill the joint and any slight surface irregularities. If the line sits farther from the wall, the mortar buildup and brick thickness can push the actual wall face away from the reference, causing misalignment and uneven joints. Keeping the line this close ensures it remains a reliable, stable reference throughout the laying process.

A precise, nearly flush reference is essential when using a mason's line, so the string should be about one-sixteenth of an inch away from the wall. This tiny clearance lets the line serve as a true guide for the finished face while accommodating the small amount of mortar that will fill the joint and any slight surface irregularities. If the line sits farther from the wall, the mortar buildup and brick thickness can push the actual wall face away from the reference, causing misalignment and uneven joints. Keeping the line this close ensures it remains a reliable, stable reference throughout the laying process.