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07190cti.txt
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1998-06-10
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SECTION 07190
WATER REPELLENTS
NOTE ** This section is based on products manufactured by
Chemprobe Technologies, Inc., at the following
address:
NOTE ** 2805 Industrial Lane
NOTE ** Garland, TX 75041
NOTE ** Voice: 800-760-6776 or 972-271-5551
NOTE ** FAX: 972-271-5553
NOTE **
NOTE ** Chemprobe Technologies, Inc. manufactures a full
line of water repellent products for exterior
surfaces.
NOTE **
NOTE ** SECTION 07190 - WATER REPELLENTS, Copyright 1996,
The Architect's Catalog, Inc.
PART 1 GENERAL
1.1 SECTION INCLUDES
NOTE ** Delete items below not required for project.
A. Water repellents for above grade surfaces of concrete.
B. Water repellents for above grade surfaces of stone.
C. Water repellents for above grade surfaces of masonry.
D. Water repellents for above grade surfaces of stucco.
1.2 RELATED SECTIONS
NOTE ** Delete any sections below not relevant to this
project; add others as required.
A. Section 03300 - Cast-In-Place Concrete.
B. Section 03400 - Precast Concrete.
C. Section 03900 - Concrete Restoration and Cleaning.
D. Section 04400 - Stone.
E. Section 04800 - Masonry Assemblies.
F. Section 04900 - Masonry Restoration and Cleaning.
G. Section 07180 - Traffic Coatings.
H. Section 09630 - Masonry Flooring.
I. Section 09900 - Paints and Coatings.
J. Section 09960 - High-Performance Coatings.
1.3 SUBMITTALS
A. Submit under provisions of Section 01300.
B. Product Data: Manufacturer's technical literature,
specifications and application instructions.
C. Contractor's certification that the applicator has the
specified experience, include a list of the names of
several recent projects, locations, names of architects,
and methods of application.
1.4 QUALITY ASSURANCE
A. Qualifications:
1. Manufacturer: A firm with not less than 10 years
experience in manufacturing the products specified in
this Section.
2. Applicator: A firm with not less than 3 years
experience in the application of the products
specified in this Section.
B. Mock-Ups:
1. Apply specified products to sample panels as directed
by the Architect to determine acceptability of
appearance and optimum coverage rate required for
application.
2. After materials have cured in accordance with
manufacturer's recommendations, water test surface to
determine that sufficient water repellent has been
applied to repel liquid water.
3. Do not begin application of water repellents to the
work until the mock-up has been approved by the
Architect.
C. Pre-Installation Conference: Prior to application of
water repellents, hold a meeting at the job site with
representatives of the manufacturer and the applicator.
Notify the Owner and the Architect at least 3 days in
advance of the time of the meeting.
1.5 DELIVERY, STORAGE, AND HANDLING
A. Packaging and Shipping: Deliver materials in original
sealed containers, clearly marked with manufacturer's
name, brand name, and type of material.
B. Acceptance at Site: Verify that the product delivered
matches the product applied to the approved mock-up.
C. Storage and Protection:
1. Store and handle materials in accordance with
manufacturer's written instructions.
2. Store materials indoors and away from sparks and open
flame in a secure area to prevent tampering and
contamination. Do not allow water-based materials to
freeze.
1.6 ENVIRONMENTAL REQUIREMENTS
A. Provide products that comply with federal, state, and
local volatile organic compounds (VOC) regulations.
B. Do not apply water repellents to surfaces below 40
degrees F or above 95 degrees F unless recommended by the
manufacturer.
C. Do not apply water repellents when rain is predicted
within 48 hours or less than 5 days after surface has
been wet.
D. Do not apply water repellents in high or gusty winds.
1.7 SCHEDULING
A. Notify the Architect not less than 48 hours before each
application of water repellent.
NOTE ** Delete the following article if no warranty is
required, or if water repellent work is covered
under the terms of a general project warranty
specified elsewhere. You may wish to edit the
article to obtain a warranty from the contractor,
only, or to suit other project-specific criteria.
1.8 WARRANTY
A. The Contractor and the installer shall jointly and
severally warrant water repellents against failure in
material and workmanship for a period of 5 years from the
date of Substantial Completion.
PART 2 PRODUCTS
2.1 MANUFACTURERS
A. Provide water repellents manufactured by Chemprobe
Technologies, Inc.; 2805 Industrial Land, Garland, TX
75041; Voice 800-760-6776 or 972-271-5551, FAX 972-271-
5553.
2.2 PRODUCTS
A. General: All products shall contain siloxane. No
fillers, sterates, or paraffins. Products containing
siloxane only, shall have a range of 3 to 7 percent
solids. Silane-siloxane blend products shall contain
minimum 15 percent solids.
NOTE ** Refer to Chemprobe's product data sheets or contact
a Chemprobe representative to determine the
appropriate water repellent to be specified. Edit
this list to retain only those products to be
included in the work.
B. Solvent Based Siloxane: Prime A Pell 200.
C. Water Based Siloxane: Prime A Pell H2O Block Formula.
D. Water Based Siloxane: Prime A Pell H2O Brick & Precast
Formula.
E. Solvent Based Silane/Siloxane Blend: Deck A Pell.
F. Solvent Based Silane/Siloxane Blend: Deck A Pell 20.
G. Water Based Silane/Siloxane Blend: Dur A Pell 20.
PART 3 EXECUTION
3.1 EXAMINATION
A. Verification of Conditions:
1. Do not apply water repellents to surfaces that
contain liquid or frozen water.
2. Verify that new masonry and mortar has cured for at
least 21 days.
3. Verify that all sealants have been installed.
3.2 PREPARATION
A. Protection:
1. Prevent water repellent fumes from entering the
building being treated, turn off ventilation system
and close fresh air intakes.
2. Protect shrubs, metal, wood trim, glass, asphalt, and
hardware during application of water repellents.
3. Do not permit spray mist or liquid to drift onto
adjacent properties.
B. Surface Preparation: Prepare surface so that it is free
of cracks, dirt, oils, paint, and other contaminants that
may affect the appearance and performance of the water
repellents.
3.3 APPLICATION
A. General: Apply water repellents in accordance with
manufacturer's printed instructions.
B. Apply water repellents using low pressure spray equipment
designed for water repellent application.
C. Apply water repellents as shipped by the manufacturer, do
not dilute.
D. Apply water repellents evenly until surface is totally
saturated. Coverage rates are dependent on surface
material. Only one saturation coat is required.
3.4 FIELD QUALITY CONTROL
A. After water repellent has dried for 24 hours at low
humidity and a temperature between 70 and 90 degrees F or
for 48 hours at high humidity and a temperature between
50 and 69 degrees F., test all surfaces with a water
spray. Recoat areas that indicate water absorption.
END OF SECTION