Essentials of
Masonry

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Part 2--Construct a Concrete-Block Wall

PATCHING AND CLEANING CONCRETE-BLOCK WALLS

Be careful not to smear mortar on the blocks. Once it has hardened, you cannot remove it, and paint will not always hide the smear. If you drop any mortar while laying the blocks, let it dry exactly as it falls and then try to remove it by striking it with a small piece of broken concrete block (Figure 2-34) Concrete-block was should never be cleaned with acid. If you need to patch mortar joints or fill holes left by nails or line pins, always use fresh mortar.

Figure 2-34.  Removing dried mortar with a piece of broken block
Figure 2-34. Removing dried mortar with a piece of broken block

David L. Heiserman, Editor

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Revised: June 06, 2015