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SECTION 07190
WATER REPELLENTS
 
 
Copyright 2014 - 2016 ARCAT, Inc. - All rights reserved
** NOTE TO SPECIFIER ** L&M Construction Chemicals; water repellents.
This section is based on the products of L&M Construction Chemicals, which is located at:
1 LATICRETE Park N.
Bethany, CT 06524-3423
Toll Free Tel: 800-362-3331
Tel: 402-453-6600
Email: request info (info@lmcc.com)
Web: www.laticrete.com/lmcc
[ Click Here ] for additional information.
L&M Construction Chemicals, Inc. manufactures sealers and sealants building products relating to: Concrete; Specially Placed Concrete; Concrete Curing; Curing, Sealing and Hardening Concrete Floors; Grouts; Concrete Rehabilitation; Masonry; Masonry Grout; Thermal and Moisture Protection; Water Repellents; Finishes and Floor Treatment.
This section specifies the application of water repellents to protect concrete and masonry from moisture and salt deterioration by use of penetrating silane/siloxane blend products from L&M Construction Chemicals, Inc. This specifications contains products for two applications: Vertical, above-grade masonry and concrete surfaces; horizontal, slab-on-grade or elevated structural concrete surfaces such as sidewalks, building entrances, bridge decks, parking lots and parking structures. The products specified in this section are not recommended for below-grade applications. Before editing this section, consult L&M to obtain complete product information on the water repellents required for the project.
 
PART 1 GENERAL
 
1.1
SECTION INCLUDES
A.
Water Repellents for the Following Applications:
1.
Above-grade, vertical masonry and concrete surfaces.
2.
Slab-on-grade, horizontal concrete surfaces.
1.2
RELATED SECTIONS
 
** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
 
A.
Section 03300 - Cast-In-Place Concrete.
B.
Section 04200 - Unit Masonry.
1.3
SUBMITTALS
A.
Submit under provisions of Section 01300.
B.
Product Data: Manufacturer's data sheets on each product to be used, including:
1.
Preparation instructions and recommendations.
2.
Storage and handling requirements and recommendations.
3.
Installation methods.
C.
Installer Qualifications: Submit qualifications of applicator.
1.
Certification stating applicator is experienced in the application of the specified products for the past 5 years.
2.
List of recently completed water repellent projects of similar scope, including project name and location, names of owner and architect, and description of products used, substrates, applicable local environmental regulations, and application procedures.
D.
Environmental Regulations: Submit applicable local environmental regulations.
E.
VOC Certification: Submit certification that water repellents furnished comply with regulations controlling the use of VOC solvents.
1.4
QUALITY ASSURANCE
A.
Manufacturer Qualifications: Minimum 5 year experience manufacturing similar products.
B.
Installer Qualifications: Minimum 5 years experience installing similar products.
1.5
TEST PANELS
A.
Before full-scale application, review manufacturer's product data sheets to determine the suitability of each product for the specific surfaces. Apply each water repellent to test panels to determine number of applications, coverage rates, compatibility, effectiveness, surface preparation, application procedures, and desired results.
B.
Apply water repellents to test panels in accordance with manufacturer's written instructions. Allow sufficient time before evaluating final appearance and results. Some products require up to 10 days curing time to develop full, long-term repellency. Do not begin full-scale application until test panels are inspected and approved by the Architect.
C.
Test Panel Requirements:
1.
Size: Minimum 100 square feet (9 sq. meters) each.
2.
Locations: As determined by the Architect.
3.
Number: As required to completely test each water repellent with each type of substrate to be protected.
D.
Retain and protect test panels approved by the Architect in undisturbed condition during the work of this section, to be used as a standard for judging the water repellent work.
1.6
PRE-INSTALLATION MEETINGS
A.
Convene minimum two weeks prior to starting work of this section.
1.7
DELIVERY, STORAGE, AND HANDLING
A.
Delivery: Deliver materials to site in manufacturer's original, unopened containers.
B.
Storage and Handling: Store containers upright in a cool, dry, well-ventilated place, out of the sun. Store away from all other chemicals and potential sources of contamination. Keep containers tightly closed when not in use. Store and handle materials in accordance with manufacturer's written instructions.
C.
Containers shall be clearly labeled and identified with product and manufacturer name.
1.8
PROJECT CONDITIONS
A.
Temperature Limitations:
1.
Do not apply at surface and air temperatures below 50 degree F or above 95 degree F, unless otherwise indicated by manufacturer's written instructions.
2.
Do not apply when surface and air temperatures are not expected to remain above 50 degree F for a minimum of 8 hours after application, unless otherwise indicated by manufacturer's written instructions.
B.
Do not apply under windy conditions which may result in uncontrolled and excessive water repellent drift.
C.
Do not apply to frozen substrate. Allow adequate time for substrate to thaw, if freezing conditions exist before application.
D.
Do not apply earlier than 24 hours after rain or if rain is predicted for a period of 8 hours after application, unless otherwise indicated by manufacturer's written instructions.
1.9
SEQUENCING
A.
Ensure that products of this section are supplied to affected trades in time to prevent interruption of construction progress.
PART 2 PRODUCTS
 
2.1
MANUFACTURERS
A.
Acceptable Manufacturer: L&M Construction Chemicals, which is located at: 1 LATICRETE Park N.; Bethany, CT 06524-3423; Toll Free Tel: 800-362-3331; Tel: 402-453-6600; Email: request info (info@lmcc.com); Web: www.laticrete.com/lmcc
 
** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.
 
B.
Substitutions: Not permitted.
C.
Requests for substitutions will be considered in accordance with provisions of Section 01600.
2.2
WATER REPELLENTS
 
** NOTE TO SPECIFIER ** Refer to L&M Construction Chemicals, Inc. product data sheets or contact a L&M representative to determine the appropriate water repellents to be specified. Edit this list of water repellents to include only those products and substrates to be included in the work.
 
A.
Vertical Work: Silane-Siloxane Water Repellent: "HYDROPEL WB". Clear, penetrating water repellent for use on concrete, brick, and clay tile surfaces. Protects against moisture intrusion and resists efflorescence, leaching, mildew staining, atmospheric staining, and freeze-thaw spalling. Treated masonry and concrete resists alkalis, and acid rain.
1.
Total Solids: 8 percent.
2.
Color: White liquid, dries clear.
3.
Odorless, water-based and VOC compliant.
4.
VOC: less than 200 grams per liter.
B.
Horizontal work. Silane-Siloxane Micro Emulsion Water Repellent, Horizontal Concrete: AQUAPEL Clear, penetrating VOC compliant, silane/siloxane blend designed to repel water and protect concrete from moisture and chloride-ion (salt) ingress.
1.
Active Substance: Silane-siloxane.
2.
Total active solids: 10 percent.
3.
Color: Sprays white, dries clear.
4.
VOC: less than 200 grams per liter.
PART 3 EXECUTION
 
3.1
EXAMINATION
A.
Verify by examination that masonry and concrete surfaces are acceptable to receive the specified water repellents. Notify the Architect if surfaces are not acceptable to receive the specified products.
3.2
PROTECTION
A.
Protect surrounding areas, landscaping, building occupants, pedestrians, vehicles, and non-masonry surfaces during the work from contact with water repellents, masonry or concrete cleaners if used, residues, rinse water, fumes, wastes, and effluents in accordance with manufacturer's written instructions.
3.3
SURFACE PREPARATION
A.
Clean all dirt, dust, oil, grease, curing compounds and other contaminants from surfaces that interfere with penetration or performance of water repellents. Use appropriate masonry or concrete cleaners approved by the water repellent manufacturer where necessary. Rinse thoroughly using pressure water spray to remove cleaner residues. Allow surfaces to dry completely before application of water repellents.
B.
Repair, patch, and fill all cracks, voids, defects, and damaged areas in surface as approved by the Architect. Allow repair materials to cure completely before application of water repellents.
C.
Apply specified sealants and caulking and allow to cure completely before application of water repellents.
D.
Seal all open joints.
E.
Allow new masonry and concrete construction and re-pointed surfaces to cure for minimum of 14 days before application of water repellents.
3.4
APPLICATION
A.
Apply water repellents to substrates in accordance with manufacturer's written instructions, environmental regulations, and application procedures determined from test panel results approved by the Architect.
B.
Apply to clean, dry, cured, and properly prepared surfaces approved by the Architect.
C.
Do not dilute or alter water repellents. Apply directly from container.
3.5
FIELD QUALITY CONTROL
A.
Inspection: Inspect the water repellent work with the Contractor, Architect, applicator, andrepresentative, and compare with test panel results approved by the Architect. Determine if the substrates are suitably protected by the water repellents.
B.
Manufacturer's Field Services: Provide the services of a manufacturer's authorized field representative to verify specified products are used, and protection, surface preparation, and application of water repellents are in accordance with the manufacturer's written instructions and the test panel results approved by the Architect.
END OF SECTION