TEX•COTE^¨
RAINSTOPPER^¨ 140 - 40% Silane Sealer
RAINSTOPPER^¨ 120 - 20% Silane Sealer

I. PRODUCT DESCRIPTION

RAINSTOPPER^¨ Silane is a chemical treatment which causes concrete, masonry, limestone or wood to become repellent to salt and water. It is available in two grades for concrete, masonry and limestone and one grade for wood.

About RAINSTOPPER^¨ Silane Treatment

• Easy to use - single pass spray, wide application temperature range
• Minimal masking, overspray or clean-up problems
• No change in texture or skid resistance
• No appearance change
• Vapor permeability unaffected
• Actually penetrates ("some sealers" only appear to penetrate but in reality deposit active ingredients on surface while solvent penetrates)
• Fast acting - treated substrates such as bridge decks reopened to traffic 20-45 minutes after treatment
• Less expensive than most other products
• Not susceptible to ultraviolet or chemical degradation
• Flows into cracks and wicks out into substrate from deepest crack point
• Helps stop efflorescence
• Compatible with solvent based surface finishes, striping paint and TEX•COTE^¨ XL-70^¨ BRIDGE•COTE^¨
• Contains no dangerous hydrocarbons

The RAINSTOPPER^¨ silane penetrated layer becomes a one-way filter; salt, water, ions and staining substances are repelled while water vapor passes freely out of the treated substrate. Treated substrates become dryer with age because vapor transmission is not reduced at all!

BASIC USE:
RAINSTOPPER^¨ SILANE CAUSES TREATED SUBSTRATES TO BECOME WATER REPELLENT WHILE RETAINING ALL VAPOR PERMEABILITY. SUBSTRATES WHICH CAN BE TREATED INCLUDE:

• Limestone Aggregates
• Gravel
• Sand
• Granite
• Concrete
• Stone
• Wood
• Brick
• Masonry
• Flagstone
• Paper
• Sandstone
• Limestone
• Marble
• Precast Concrete
• Stucco
• Architectural Concrete
• Synthetic Stone

  AFTER BEING CHEMICALLY TREATED, THESE SUBSTANCES BECOME HIGHLY RESISTANT TO:
  

• Staining
• Spalling
• Weathering
• Efflorescence
• Water intrusion
• Salt Intrusion
• Fungi and Mildew Deterioration
• Freeze-thaw Scaling
• Reinforcing Steel Corrosion

II. PRODUCT CHARACTERISTICS:

Flash Point............................105¡F Closed cup
Drying time at 70¡F..............20-45 minutes
Penetration (approx.)..................1/10-1/2 inch
Vapor Permeability.....................Excellent
Chloride Resistance....................Excellent
Moisture Resistance....................Excellent
Efflorescence Resistance...............Excellent
Acid Rain Resistance...................Excellent
Surface Appearance After Application...Unchanged
Yellowing..............................None
Darkening..............................None
Overspray Problems.....................None
Maintenance Required...................None

III. PERFORMANCE:

RAINSTOPPER^¨ Silane has an excellent performance record. Testing has proven that is is superior to oligomeric polysiloxanes, stearates, siliconates, silicates, urethanes, butadienes, chlorinated rubber, epoxies, and oils.

IV. COMPOUNDS:

RAINSTOPPER^¨ 140 - Our premium grade silane weatherproofing product contains 40% Alkyltrialkoxy Silane in Mineral Spirits. It is used to protect and maintain bridges, parking garages, airport pavements, industrial plants, buildings and other concrete and masonry structures in the most severe environments. RAINSTOPPER^¨ 140 penetrates up to 1/2 inch with each application.

RAINSTOPPER^¨ 120 - Our high grade silane weatherproofing product contains 20% Alkyltrialkoxy Silane in mineral spirits. It is used to protect and maintain bridges, building, parking garages, pavements, plants, and other brick and concrete structures in environments. RAINSTOPPER^¨ 120 penetrates up to 1/4 inch with each application.

LIMITATIONS
Do not allow overspray to make contact with plants.
Do not apply when ambient or surface temperature is below 32¡F or above 100¡F.
Do not apply to wet surfaces.
Do not apply when heavy rain is pending within 60 minutes.
Be sure the surface is adequately cleaned to absorb the RAINSTOPPER^¨ prior to application.
Do not allow any water to dilute Rainstopper.

V. TECHNICAL DATA

                SALT RESISTANCE (AASHTO T259, T260)
                                 Sample           % Chloride
Product                        Depth Inch          Ion by Wt.
Control Uncoated               1/16"-1/2"           0.0792
Control Uncoated               1/2" -1"             0.0581
RAINSTOPPER¨ 120                1/16"-1/2"           0.0269
RAINSTOPPER¨ 120                1/2" -1"             0.0032
RAINSTOPPER¨ 140                1/16"-1/2"           0.0144
RAINSTOPPER¨ 140                1/2" -1"             0.0030

                 SALT WATER WEIGHT GAIN WJE Assoc.
                NCHRP Report No. 244: Test 21 Days

                                Average       Average Reduction
Product                        Wt. Gain%        in Wt. Gain%
RAINSTOPPER¨ 120                  0.42                80
RAINSTOPPER¨ 140                  0.37                83

                  CHLORIDE ION CONTENT WJE Assoc.
                NCHRP REPORT NO. 244: TEST 21 DAYS

                             Chloride Ion        Reduction of
                             % By Wt. of     Chloride Ion Content
Product                        Concrete          in Concrete%
RAINSTOPPER¨ 120                  0.039               82
RAINSTOPPER¨ 140                  0.024               89
Uncoated concrete                0.215

                SCALING RESISTANCE ASTM C-672-84
                                                   50 CYCLES
RAINSTOPPER¨ 120                                    No Scaling
RAINSTOPPER¨ 140                                    No Scaling

                     NCHRP REPORT NO. 244
                 Series iv, Southern Exposure
                                                   Reduction in
                                                   Chloride Ion
                                                    Content
RAINSTOPPER¨ 120                                       100%
RAINSTOPPER¨ 140                                       100%

                   WATER VAPOR TRANSMISSION
                     ASTM E96 Procedure B
                             Average Vapor          Average
                              Transmission         Permeance
Product                    (Grains/Hr/Sq. Ft.)       Perms
Control                           1.32                3.25
RAINSTOPPER¨ 120                   0.9                 2.23
RAINSTOPPER¨ 140                   0.74                1.83

ALL TEST RESULTS PRODUCED USING RAINSTOPPER^¨ 120 & 140
Note: RAINSTOPPER^¨ 120 and RAINSTOPPER^¨ 140 may be manufactured to comply with VOC requirements in California and other states where mandated.

VI. INSTALLATION

JOB CONDITIONS:
The RAINSTOPPER^¨ Silane Solution is ready to use and shall be applied as supplied. It cannot be diluted or altered in anyway. DO NOT allow any water to get into the solution. Application equipment should contain NO WATER. If the equipment to be used has been cleaned using water, it may still be wet. It should be flushed with a small amount of Anhydrous Alcohol or RAINSTOPPER^¨ Silane Solution prior to beginning the actual application.

The RAINSTOPPER^¨ Silane Solution may be applied by brush, roller or spray. The most effective method for applying the RAINSTOPPER^¨ Silane is to spray it on the surface using low pressure (15 p.s.i.) positive displacement airless spray equipment. All spray equipment should be fitted with fan spray nozzles and then spray adjusted to a "Wet Spray" condition. Mist spraying can allow a substantial portion of the material to be lost to the atmosphere and slow down the rate of application. Deck areas should be sprayed using a spray-bar type unit, and other areas sprayed with hand spray units. The spray equipment, tank, hoses, etc., should thoroughly clean, free of water, foreign matter and oil residue prior to use for spraying the RAINSTOPPER^¨ Silane Solution. The coverage rate shall be as per the NCHRP 244 Test Method or as designated by the governing highway department or engineer of record. (All test results based on a coverage rate of 125 sf/gallon standard NCHRP Test 244 method.) Horizontal surfaces will be completely flooded; vertical surfaces will have spray patterns that will run 6 to 8 inches before soaking in when application rates are correct.

If the applicator is unable to complete the entire application at one time, the place where the application was stopped shall be clearly marked. Partially used containers should be properly sealed and protected from contamination by water or other foreign substances.

Provide adequate ventilation during and after application, so that RAINSTOPPER^¨ odors are not evident. Product is flammable. Use reasonable care and caution. Do not proceed when excessive winds (fifteen (15) m.p.h, or over) could interfere with application. Concrete shall have cured to design strength prior to application of the RAINSTOPPER^¨ Silane Solution.

All surfaces must be able to absorb the RAINSTOPPER^¨ Silane Solution. The Silane can be fully effective only when the solution is able to penetrate into the concrete or masonry pores and capillaries.

To determine the surface absorption characteristics, observe the rate at which a small drop of the RAINSTOPPER^¨ Silane Solution penetrates into the substrate. It will begin to penetrate immediately and be absorbed by the surface within a few seconds is the surface is sufficiently clean to allow penetration. If the surface retains an "oil spot" appearance, it must be cleaned.

Surfaces which are not clean (i.e., surfaces where the pores and capillaries may be clogged with oils, dirt, dust, curing compound and/or other coatings, etc.) must be cleaned sufficiently to allow enough pores to be opened so the the RAINSTOPPER^¨ Silane Solution can penetrate as described above.

RECOMMENDED CLEANING METHOD:
Steel shotblasting, sandblasting, waterblasting or any other method which opens pores as described. If wet methods are used, the surface should be allowed to dry completely prior to application the Silane Solution. When applied to a clean surface, the thickness of the penetrated layer is determined by the dryness of surface when treated, the amount of RAINSTOPPER^¨ applied and the density of the substrate. All concrete or masonry surfaces shall be substantially dry prior to application of the Silane Solution.

VII. AVAILABILITY & COST

RAINSTOPPER^¨ Silane Sealers are available from Textured Coatings of America, Inc. facilities or representatives in most cities throughout the United States or by calling "Sweets Buy-Line". Cost will vary from region to region. Contact your local representative.

VIII. WARRANTY

Limited warranties are available. Notification or request for a warranty must be prior to application of the product. Specimen copies and details of warranties are available upon request.

XI. MAINTENANCE

No particular maintenance required.

X. TECHNICAL SERVICES

Analysis of particular project requirements and recommendations for the proper use of RAINSTOPPER^¨ Silane are available upon request.

XI. FILING SYSTEMS

Sweets Architectural Filing System and or Spec-Data II Files. For additional literature, request from TCA, Inc.

Protective Systems for New Prestressed and Substructure Concrete, U.S. Department of Transportation, April, 1987 (FHWA/RD-86/193).

Concrete Sealers for Protection of Bridge Structures, National Cooperative Highway Research Program Report 244, December 1981 (NCHRP No. 244).

THESE PUBLICATIONS AND ADDITIONAL PRODUCT INFORMATION ARE AVAILABLE UPON REQUEST.

RAINSTOPPER^¨ SILANE SYSTEM

RAINSTOPPER^¨ SILANE causes treated substrates to become water and salt repellent.

RS-120-140-1297