NYC 9/11 Public Portal Document
130 Cedar Street July 15, 2004
Selective Demolition and Façade Restoration Koenen Associates
a. ProSoCo; [Sure Klean Heavy-Duty Restoration Cleaner] [Sure Klean 1028
Restoration Cleaner] [or] [Sure Klean Restoration Cleaner].
I. Two-Part Chemical Cleaner: Manufacturer's standard system consisting of potassium
or sodium hydroxide based, alkaline prewash cleaner and acidic afterwash cleaner that
does not contain hydrofluoric acid.
1. Products:
a. ProSoCo; Sure Wean 766 Limestone & Masonry Prewash and Afterwash.
2.5 MISCELLANEOUS MATERIALS
A. Masonry Patching Compound: Factory-mixed cementitious product that is custom
manufactured for patching masonry, is vapor- and water permeable, exhibits low
shrinkage, and develops high bond strength to all types of masonry.
1. Formulate patching compound used for patching brick in colors and textures to
match brick being patched. Provide [number of colors needed] [not less than
three colors] to enable matching each brick.
2. Formulate patching compound used for patching unglazed terra cotta in colors
and textures to match terra cotta being patched.
3. [Available ]Products:
a. Cathedral Stone Products, Inc.; Jahn Restoration Mortar.
b. Edison Coatings, Inc.; Custom System 45.
c. <Insert manufacturer's name; product name or designation.>
B. Masonry Repair Anchors, Expansion Type: Mechanical fasteners designed for
masonry veneer stabilization consisting of 1/4-inch- (6-mm-) diameter, Type 304
stainless-steel rod with brass expanding shells at each end and water-shedding
washer in the middle. Expanding shells shall be designed to provide positive
mechanical anchorage to veneer on one end and backup masonry on the other.
1. [Available ]Products:
a. Dur-O-Wal, a Dayton Superior Company; Mechanical Repair Anchors.
b. Hohmann & Barnard, Inc.; #521 RA Repair/Restoration Anchor.
c. <Insert manufacturers name; product name or designation.>
C. Masonry Repair Anchors, Spiral Type: Type 304 stainless-steel spiral rods designed to
anchor to backing and veneer. Anchors are flexible in plane of veneer but rigid
perpendicular to it.
1. Provide adhesive-installed anchors complete with manufacturer's standard epoxy
adhesive and injection tubes, screens, sleeves, or other devices required for
installation.
2. Provide driven-in anchors designed to be installed in drilled holes and relying on
screw effect rather than adhesive to secure them to backup and veneer.
CLAY MASONRY RESTORATION AND CLEANING 04901 -7
NYC-WTC 000125174
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