Isothane Polyurea Range - Armour - Flex PW
...voids, honeycombs, pin holes and delaminations. Concrete must have at least a 3000 psi minimum compressive strength. Maintain all expansion joints. Abrasive blast to remove surface laitance. A high degree of cleanliness is necessary. Surface must be dry and sound. Substrate Repairs All spalls and delaminations must be rehabilitated. Rout and seal all cracks over 1. See #2.
Acid Etching Tips
...loose or peeling paint by scraping, wire brushing or power washing. Paint edges should be feathered by sanding as needed. Small exposed areas should be wire brushed to remove any laitance or other contamination prior to priming with Seal-Krete Lock-Down. Large exposed concrete areas should be treated as unpainted and etched as directed in etching section. See #3.
Steelcote Manufacturing Company - Product Applications: Additional Products
...Clean & Etch is a proportioned, mixed acid solution combined with detergent additives for use in preparing concrete and masonry surfaces for coatings and sealers. It removes laitance and neutralized alkali in new or "green" concrete that has never been coated. The detergent holds contaminants in the foam so they can be easily rinsed away. See #4.
Heresite HCR-1100 Polyester Thick Film Coating
...be cured 28 days at 70°F (21°C) and 50% relative humidity. IMMERSION: Dry abrasive blast to open all voids NON-IMMERSION: Surfaces must be acid etched or abrasive blasted to remove laitance. PRIMER: HCR-1101 MIXING: Stir Part A thoroughly. Add the contents of Part B to the container of Part A. Mix thoroughly. Mixed material must be used within 2 hours. See #5.
Bondit Construction Chemicals: Product Details
...REPAIR is used for production of repair mortars. Directions For Use The surface where BONDIT BOND REPAIR is to be applied should be free from dust, grease and oil. Cement particles, laitance etc., should be removed. Slightly wet the surface before applying BONDIT BOND REPAIR. The surfaces if smooth should be made rough by scrubbing or grit blasting... See #6.
Dryvit Systems Inc - Color Prime - W DS474
...stucco provides more uniform surface conditions and color background, while still allowing enough suction for good trowel application of Dryvit textured finishes. Surface crazing, laitance and alkaline “hot spots” in new stucco are minimized. It may also be applied over Dryvit base coats, concrete, masonry, brick and other porous surfaces where... See #7.
Stained Glass Specs
...what methods to use to provide an acceptable finish to the building owner. All surfaces must be structurally sound, hard, non-dusting, clean, completely dry, and free of all oils, laitance. If the concrete is not sound hard and non-dusting; then the bidder must contact Anti-Hydro International, Inc. for directions for the repair of the concrete. See #8.
Passonno Paints | Exterior Surface Problems
...is properly etched, it should resemble texture of fine sandpaper. Etching neutralizes the alkaline surface and provides a better bond. It also helps remove salt deposits (called laitance) that can occur on concrete surfaces. Sand off any crumbly areas of loose concrete. The floor should now be ready to paint. Return to INDEX PROBLEM: Peeling... See #9.
ChemMasters - Cleaners & Solvents
...grease, oil, tar, tire marks and solvent based curing compounds. 1204 Acid Conditioner Technical Data Sheet MSDS CSI Specifications 1204 Acid Conditioner etches concrete to remove laitance and open surface pores prior to application of thin mil sealers or coatings. Is is a proprietary compound which is self-neutralizing, eliminating the need... See #10.
Floor Coatings - Page 6
...be applied to properly prepared, uncured concrete). Very dense, non-porous or chemically treated concrete that is not made rough and porous by the acid treatment or the presence of laitance (fine white particles) will require abrasive blasting (e.g. "Blastrac"), sandblasting, abrading or grinding, followed by vacuuming or thorough cleaning, ... See #11.
Acrylic Ad-Mix 101 Guide Specifications
...Surfaces to receive Acrylic Ad-Mix 101® modified mixes MUST BE STRUCTURALLY SOUND AND CLEAN, free from loose material, dust, dirt, oil grease, wax, loose paint, mildew, rust, laitance or efflorescence. Surfaces with form releasing agents, curing compounds, hardeners and sealers must be compatible with Acrylic Ad-Mix 101® mixes. For... See #12.
Urethane Top Coat - Superior Epoxies & Coatings, Inc.
Excellent flexibility. Resistant to abrasion. SURFACE PREPARATION: Surface must be clean, sound, dry and free of all foreign materials such as oils, grease, loose paint, dust and laitance. This may be accomplished by sand blasting or scarifying, followed by an air blast to remove dust and debris from the application area. Prime the surface... See #13.
CR-90 Crack Filler
Small amounts of material remaining in the kettle may be reheated. Surface and Joint Preparation... The joints and cracks to be sealed must be clean and dry. Dust, dirt and laitance should be removed immediately preceding the sealing operation. CERA-ROD ™ heat-resistant backer rod from W. R. MEADOWS may be installed in the joint... See #14.
IPA Systems
Surfaces may be dry or damp but must be free of standing water. On most concrete surfaces it is recommended that the surface be sandblasted to remove laitance on top of the concrete, and on road surfaces to remove grease, dirt and oil deposited by vehicles. Sandblasting should completely clean the concrete and expose some aggregate. See #15.
Barrett Roofing: New Construction Guidelines
7.3 for precise specification. The deck must be properly cured with moisture content andhave a dry surface. The concrete deck surface must be free of any laitance, oils, dust, dirt, frost, unapproved curing compounds or other foreign matter detrimental to the adhesion or performance of the membrane. Moisture content... See #16.
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