Quantcast Summary of Maintenance and Repair Procedures for Masonry Structures

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SUMMARY OF MAINTENANCE AND REPAIR PROCEDURES
FOR MASONRY STRUCTURES
RECOMMENDED :
NOT RECOMMENDED:
Retain original masonry and
Do not apply waterproof or
mortar whenever possible
water repellent coatings or
without applying any surface
other treatments unless
treatment.
required to solve a specific
problem that has been studied
and identified.  Coatings are
frequently unnecessary and
expensive.  Waterproof
coatings may prevent the
natural transfer of water
vapor from the building,
causing masonry to
deteriorate.
Repoint only those mortar
Do not repoint mortar joints
joints where there is evidence
that do not need repainting.
of moisture problems or when
sufficient mortar is missing
Do not use electric saws or
to allow water to stand in the
hammers to remove mortar.
mortar joint.
Duplicate old mortar in
Do not repoint with mortar of
composition, color, and
high portland cement content,
texture. Duplicate old mortar
creating a bond that may be
in joint size, method of
stronger than the building
application, and joint
material.
profile.  Repair stucco with a
stucco mixture that duplicates
Do not repoint with mortar
the original as closely as
joints of a differing size,
possible in appearance and
profile, texture, or color.
texture.
Clean masonry only when
Do not sandblast brick or
necessary to stabilize the
stone surfaces.
brickwork by halting
Always use the
Do not clean with high-
gentlest method possible.
-pressure water.
Do not use chemical products
that could have an adverse
chemical reaction with the
masonry materials, e.g. acid
cleaners on limestone or
marble.
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