sealant adhesion and compatibility have been tested and verified
using substrate, water repellent, and sealant materials identical
to those used in the work.
b.
Provide manufacturers' test results of compatibility.
1.10
INSPECTIONS
Notify the manufacturer's representative a minimum of 72 hours prior to
scheduled application of water repellents for field inspection. Inspect
surfaces and obtain approval in writing from the manufacturer's
representative prior to any application of any water repellent coating.
1.11
SURFACES TO BE COATED
Coat all exterior [concrete,] [masonry,] [or plaster] surfaces. This
includes back faces of parapets, top of walls, edges and returns adjacent
to windows and door frames and free standing walls.
1.12
WARRANTY
Provide a warranty, issued jointly by the manufacturer and the applicator
of the water repellent treatment against moisture penetration through the
treated structurally sound surface for a period of five years. Warranty to
provide the material, labor, and equipment necessary to remedy the problem.
At the satisfactory completion of the work, complete the warranty sign,
notarize, and submit to the Contracting Officer.
PART 2
PRODUCTS
2.1
MATERIALS
Water repellent solution shall be a clear, non-yellowing, deep-penetrating,
VOC compliant solution. Material shall not stain or discolor and shall
produce a mechanical and chemical interlocking bond with the substrate to
the depth of the penetration.
2.2
WATER REPELLENTS
**************************************************************************
NOTE: Delete following types not required.
**************************************************************************
2.2.1
Silane, 20 Percent Solids
Penetrating water repellent. A monomeric compound containing approximately
20 percent alkyltrialkoxysilanes with alcohol, mineral spirits, water, and
other proprietary solvent carrier.
a.
Modified alkylalkoxysilane.
b.
Active alkylalkoxysilane content:
ASTM D 2369 20 percent by
weight, plus or minus 1 percent.
c.
Appearance:
White, milky liquid.
d.
Average depth of penetration:
Up to 10 mm 3/8 inchdepending on
substrate.
SECTION 07190
Page 10
Previous Page
