Concrete Dyes and Stains
...Hardener may be applied when finishing the concrete to achieve different effects and lighter, brighter colors. Clean and prepare new concrete the same way as existing concrete. Laitance and other minerals and impurities on the surface may impede the penetration of DecoTone. COVERAGE: Coverage will depend on surface condition, application technique and dilution rate. See #1.
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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 #2.
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Surface Preparation - Sherwin-Williams
...and other foreign material by cleaning per SSPC-SP1, Solvent Cleaning. Block (Cinder and Concrete) Remove all loose mortar and foreign material from block. Surface must be free of laitance, concrete dust, dirt, form release agents, moisture curing membranes, loose cement, and hardeners. Concrete and mortar must be cured at least 30 days at 75°F. See #3.
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Polycrete II
...resist cracking, particularly in colder temperatures. Installation Prepare the receiver. It must be clean and dry. Unsound concrete must be removed. Sandblast the area to remove laitance and contaminants. For protection, tape off the edges of the area to be repaired. This will make for a clean appearance once the material has been poured and cured. See #4.
Joint Sealants, Crack Fillers, and Caulk from Pacific Polymers, Manufacturer of Deck...
...NEW CONCRETE: Remove all loose material by wire brushing. Sandblast surfaces that have been in contact with form release agents. Fresh concrete must be fully cured at least 28 days. Laitance must be removed by abrading. OLD CONCRETE PREVIOUSLY CAULKED: Remove all old joint sealant material by mechanical means. If joint sides have absorbed oils, ... See #5.
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 #6.
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Tnemec Project: Gossett Volkswagon Service Area Floor
...abrasion while maintaining their aesthetic appearance.? Prior to coating, the floors were acid-etched in accordance with SSPC-SP1 Solvent Cleaning to remove all visible oil, grease, laitance and other surface contaminants and to provide surface profile. Series 66 Hi-Build Epoxoline, a polyamide epoxy, was applied as the primer, followed by two... See #7.
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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.
Frequently Asked Questions
ALL concrete surfaces need thorough cleaning. Old surfaces need cleaning to remove any bond preventing dirt, or contamination. New concrete surface always has laitance present, which MUST be removed. For more details, please see Technical Note - Surface Preparation Instructions. Back to top Q. Is it possible to bond to oil contaminated concrete? A. See #9.
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Isothane Polyurea Range - Armour-Prime
...off soft or powdery surfaces Remove rust and corrosion from metals Abrade smooth metal, plastics and fibreglass surfaces Allow 28 days for new concrete to cure and before removing laitance and applying primer Roofs: Remove dust, dirt and loose chippings Kill fungal growth with fungicide and wash off thoroughly, and dry Fill cracks and voids... See #10.
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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.
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IPA Systems
...upon the porosity of the surface treated. Installation: Surface Preparation: Surface to be treated must be cleaned of any film, scale, loose material, oils, grease, dust, dirt, laitance, efflorescence, oil-based curing membranes or form release agents, paint, unsound concrete and any other material that will prevent penetration. Surface... See #12.
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LA Mission College Health & PE Fitness Center Case Study: Larsen Products Corp.
ROOF SURFACE PREPARATION: The surface is watered down followed by blasting with compressed air using an 185 CFM air compressor to remove contaminants such as laitance flakes, loose material dust and dirt. All grease or oil is removed from the surface. Surface imperfections are smoothed with a wire brush and dirt is blasted from the surface. See #13.
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Superior SuperTop - Pre-Measured Flooring Coating - Superior Epoxies & Coatings, Inc.
Available in standard, low temp and chemical resistant versions. SURFACE PREPARATION: Surface must be clean, sound, dry and free of any oils, grease, curing compounds, dust, laitance or any other contaminants. This may be accomplished by sand blasting, water blasting or some other mechanical means. New concrete surfaces should be acid... See #14.
Cathedral Stone® Products | Jahn Mortars
Choose from Standard or Custom Colors. Application Procedures Surface Preparation Surfaces to receive M60 must be sound and free of all dust, dirt, grease, laitance and/or any other coating or foreign substance which may prevent proper adhesion. Remove all loose or friable mortar before application of Jahn M60. The... See #15.
LMCC
Installation Guide For Epoxy Grout Preparation of Concrete Substrate: The concrete substrate to be grouted must be free of grease, oils, laitance, debris, carbonation and other contamination. A sound, bone dry substrate is required. Roughen concrete substrate to expose large amounts of coarse aggregate. Preparation... See #16.
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