SPECIALTY COATINGS
#207 HAIRLINE CRACK SEALER
ULTRA-LOW VISCOSITY EPOXY DESIGNED TO PENETRATE CRACKS BY GRAVITY
Product #207 is a two-component, 100% reactive, very low viscosity, medium modulus epoxy resin system designed to penetrate and bond cracks in concrete structures by gravity feed.
USES / APPLICATIONS
The low viscosity epoxy resin will penetrate into fissures as narrow as 0.002 of an inch in width. Its high affinity for superior chemical and mechanical bond to concrete eliminates the need for injection equipment on open, clean cracks on many projects.
Thermal-Chem Hairline Crack Sealer has many potential applications for filling cracks in concrete structural slabs, parking decks, bridge decks, highway pavements, airport runways and industrial and commercial floors.
ADVANTAGES
- Unique,non-shrinkingsystempenetratesinto the smallest fissures, structurally bonding the concrete into a monolithic unit.
- Stops moisture and chemical penetration of both liquid and vapor through the crack providing a total waterproof seal, thus protecting the concrete reinforcement steel from further corrosion.
- Material is easily applied on dry or moist surfaces by conventional tools such as squeegees and rollers.
- Excellent potlife allows sufficient time for application.
- Balanced properties of the cured system protect the concrete without causing any stresses to the structure.
COVERAGE
The rate of coverage is dependent upon the size of Hairline Crack Sealer – Product 207 – PDS 01/01/20 crack width, crack depth, number of cracks and the concrete porosity. Typical application is 50-200 square feet per gallon.
DATA SHEET
LIMITATIONS
- Do not thin epoxy with solvents.
- Do not apply on ice or frost covered surfaces. Do not apply on wet surfaces.
- Prolonged storage above 100oF (38oC) may shorten shelf and potlife.
- If substrate temperatures are below 70oF(20oC) preheat each component to 90oF (32oC) before mixing. See Section entitled Curing.
APPLICATION INFO
SURFACE PREPARATION- The concrete surface and cracks must be free of oils, grease, waxes, curing compounds, dust and other debris that could inhibit the epoxy from wetting the substrate. Contaminates can be removed with any dry abrasive method such as sand or steel shot. Vacuum cracks as necessary to remove debris. Freestanding water can be blown off with oil free compressed air.
MIXING – To assure product consistency, pour the “B” component into the “A” component and mix thoroughly using a mechanical paddle type mixer. When pre-measured kits are used no weighing is necessary. When larger volume containers are used, refer to the product label for proper mixing ratios.
APPLICATION –Thermal-Chem Hairline Crack Sealer can be applied to the substrate by using a squeegee and/or in combination with a roller. The material should be worked into the open crack for 5 to 10 minutes to insure penetration. If an excess of resin is present upon the surface, broadcasting sand into the wet epoxy will provide an anti-skid surface if desired.
CURING – The product may be used on substrate temperatures between 40° to 120oF. The warmer the temperature, the faster the cure, the lower the temperature, the slower the cure.
Re-coating should be performed after tack-free stage develops and within 24 hours of the first coat. In high humidity conditions, a greasy film may be seen on exposed upper surface of the epoxy due to amine blush. This film will wash off with a warm soap and water solution. In outdoor applications the sanding of the surface hides this film and it soon disappears from natural environments such as rain and snow.
CLEAN UP- All tools must be immersed or cleaned with mineral spirits, toluene, methyl ethyl ketone or xylene before curing occurs. Do not allow any epoxy to harden on tools, equipment or areas where adhesion is not desired. Read all safety labels and Material Safety Data Sheets before using solvents. Some solvents are flammable.
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