![]() Chemical solvents such as acetone, methyl isobutyl ketone, or cyclohexanone may be used. Dried Weld-Crete® is much more difficult to remove. Wet Weld-Crete® is easily removed with hot water. How can Weld-Crete® be removed from surfaces that have been accidently coated?.The base coat must be allowed to dry 24 hours before the finish coat is applied to prevent flooding of the bond line. The base coat should be a minimum of 3/8". Only the base coat is bonded to Weld-Crete®. Do procedures vary when two or three coat work is applied over Weld-Crete®?.Weld-Crete® may be applied over painted surfaces provided the paint is clean and well secured to the substrate. Weld-Crete® may be applied to any clean, structurally sound surface. What surfaces are suitable for Weld-Crete®?.It is not recommended for use where hydrostatic pressure is present. ![]() It is not intended for use as a water barrier. Once the new concrete is fully cured, Weld-Crete® is unaffected by humidity or condensation. Is Weld-Crete® a water retardant or water barrier?.New concrete can be applied over Weld-Crete® when it is dry to the touch, usually within one hour, up to ten days later, provided that the Weld-Crete® film is kept clean. When can new concrete be applied to Weld-Crete®?.Allow frozen Weld-Crete® to thaw at room temperature. Weld-Crete® is freeze thaw stable however, it is preferable to prevent freezing. Should Weld-Crete® freeze, will it harm the product?.Spraying becomes extremely difficult in cold weather. Weld-Crete® becomes thicker in colder weather and coverage is reduced. What coverage can be expected for Weld-Crete®?īetween 200-300 square feet per gallon depending on the surface.Weld-Crete® may be painted over painted surfaces provided the paint is still well secured to the substrate. Dust, dirt, oil, grease, wax, loose paint, efflorescence, rust, mildew, and other foreign material must be completely removed. The surface must be clean and structurally sound. What surface preparation is needed for Weld-Crete®?.Do not permit Weld-Crete® to puddle in low areas. Weld-Crete® should be applied in a thin, continuous, film. When using spray equipment, the nozzle should permit a fog-type spray. Weld-Crete® can be applied by brush, roller, or spray. Full bonding strength is achieved after the new concrete has completely cured. ![]() The dry film is reactivated by the moisture and chemical reaction that occurs as the new concrete cures. Weld-Crete® is applied as a liquid and as it dries to a thin, flexible film, it forms a tenacious bond to the structural surface. It has been specified and used by major architects, engineers and construction companies throughout the world since 1952. General proportion is – 16 oz of the Fresco Plaster Weld to 4 quarts of Arriccio Fresco Painting Plaster (ratio 1 part “Colonial Fresco lime Putty” to 2 parts sand).Weld-Crete®, the original chemical bonding agent for concrete, is a safe, easy to use surface applied bonding agent that bonds new concrete to any clean, structurally sound surface. NOTE: Fresco Plaster Weld is added ONLY to Base Coat/Layer! Just the same way you would add water minutes before the application to soften the mix – and applied to pre-painted (drywall) walls or primed plywood/wood panels (2 coats of commercial primer or paint).įor installing to pre-painted Drywall or Primed Panel You will need to have 3 Coats/Layers (allow plaster to fully cure, between applying coats): Ever wondered how to apply fresco painting plaster over painted drywall or wooden panel?įresco Plaster Weld is added to the Base Coat/Layer (mix-ratio 1 part lime to 2 parts sand) right before application during plaster conditioning instead of water.
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