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

Answer: (C)

Keep the mason’s line very close to the wall to use it as a precise reference for the finished face. The line should run parallel to the wall with only a hair’s width between them—about 1/16 inch. This tiny gap lets you see and follow the true face of the wall without the line interfering with the bricks or mortar, providing an accurate guide as you lay each course. If the line sits farther away (like 1/8, 1/4, or 1/2 inch), it won’t reflect the wall’s actual face, making it harder to keep bricks true to the line and to maintain consistent joints. A 1/16 inch clearance is the standard balance: close enough to be an accurate gauge, but not so close that it rubs against the wall or bricks.

Keep the mason’s line very close to the wall to use it as a precise reference for the finished face. The line should run parallel to the wall with only a hair’s width between them—about 1/16 inch. This tiny gap lets you see and follow the true face of the wall without the line interfering with the bricks or mortar, providing an accurate guide as you lay each course.

If the line sits farther away (like 1/8, 1/4, or 1/2 inch), it won’t reflect the wall’s actual face, making it harder to keep bricks true to the line and to maintain consistent joints. A 1/16 inch clearance is the standard balance: close enough to be an accurate gauge, but not so close that it rubs against the wall or bricks.