3.10.14
Cleaning
**************************************************************************
NOTE: This paragraph should be edited for the type
of masonry, brick or concrete masonry units, used in
the veneer.
**************************************************************************
Mortar daubs or splashings shall be completely removed from finished
exposed masonry surfaces before they harden or set up. Before completion
of the work, defects in mortar joints shall be raked out as necessary,
filled with mortar, and tooled to match the adjacent existing mortar in the
joints. The proposed cleaning method shall be done on the sample wall
panel and the sample panel shall be examined for discoloration or stain.
If the sample panel is discolored or stained, the method of cleaning shall
be changed to ensure that the masonry surfaces in the structure will not be
adversely affected. Masonry surfaces shall not be cleaned, other than
removing excess surface mortar, until mortar in joints has hardened.
Cleaning shall be accomplished with the use of stiff bristle fiber brushes,
wooden paddles, wooden scrapers, or other suitable nonmetallic tools. [The
exposed brick surfaces shall be saturated with water and cleaned with a
proprietary brick cleaning agent recommended by the clay products
manufacturer. The cleaning agent shall not adversely affect the brick
masonry surfaces. Proprietary cleaning agents shall be used in conformance
with the cleaning product manufacturer's printed recommendations.]
[Concrete masonry unit surfaces shall be dry-brushed at the end of each
day's work after any required pointing has been done.] Efflorescence or
other stains shall be removed in conformance with the recommendations of
the masonry unit manufacturer. After construction and cleaning, masonry
surfaces shall be left clean, free of mortar daubs, stain, and
discolorations, including scum from cleaning operations, and will have
tight mortar joints throughout. Metallic tools and brushes shall not be
used for cleaning.
3.11
BUILDING EXPANSION JOINTS
**************************************************************************
NOTE: In buildings that have no complete structural
lateral support system separation joints, this
paragraph will be deleted.
**************************************************************************
Expansion joints shall be located where indicated and shall be of the size
and details shown.
-- End of Section --
SECTION 04810
Page 27
Previous Page
