Problem Solving Forum (47)


How do you keep sealants in control joints from cracking or separating from the substrate?


When specifying coatings for maintenance repainting of structural steel, under what conditions is it acceptable to settle for a surface-tolerant system, and when is such a system unacceptable?


When moisture permeates concrete slabs or walls below grade, how can this problem be solved and does it require excavation?


The facade of my late-19th-century, cast-iron office building has been coated several times, most recently in the 1960s. The paint is faded and delaminating, and I want to remove and replace it. How do I assess the condition of the cast iron and coating, repair weakened areas of the cast iron and prepare and recoat the surface?


What is the best way to repair localized coating breakdown on steel?


What’s the best way to prevent corrosion of reinforcing bar in concrete?


What is the proper surface preparation for stainless steel before coating to resist a salt-laden atmosphere?


What are the most effective procedures for protecting steel and adjacent concrete?


What must specifiers consider when selecting and using sealants and grouts to fill gaps and seal concrete structures?


How do you determine whether a lead-bearing coating can be overcoated or removed and replaced?


How can I determine the cleanliness of stainless steel for painting after blast cleaning?


We need to paint our publicly owned lighthouse. What should I include in the specifications for this bid regarding surface preparation, coating systems, and other considerations?


How do I get permanently get rid of efflorescence on clay brick?


What’s the best way to protect a masonry wall from freeze/thaw cycling?


What’s the best way to protect porous masonry from graffiti?


What is the best way to protect an exposed concrete foundation?


Can efflorescence be removed from integrally colored CMU without damaging the appearance? How?


How can you determine the moisture content of a concrete block (CMU) wall, and how can you judge when the moisture level is sufficiently low to paint?


What should be considered in replacing a wooden deck with one made of concrete, in terms of the options for appearance, color, cost?


How do I deal with the small cracks and fractures that occur along the edges and corners of the stone imprints in some of my stamped concrete work?


How do you keep sealants in control joints from cracking or separating from the substrate?


What is the best way to remove graffiti from the surface of historic stone masonry on a church while preserving the appearance properties of the substrate?


How do you strip paint from a cementitious substrate if you can’t alter the surface texture?


How many times can a building be repainted before the paint becomes too thick to perform properly?


We need to paint our publicly owned lighthouse. What should I include in the specifications for this bid regarding surface preparation, coating systems, and other considerations?


What is the best way to prevent tropical hardwood deck lumber like ironwood from developing a gray patina in sunlight?


What is the best way to remove graffiti from the surface of historic stone masonry on a church while preserving the appearance properties of the substrate?


How do you repair delaminated areas of an elastomeric polyurea when the majority of the coating system is intact?


What kind of surface preparation is most effective and economical before recoating aluminum window frames on a large office building? The original baked-on fluoropolymer has lost most of its gloss.


What are the alternatives for removing mildew from uncoated concrete block exteriors before coating?


What are the most important recommendations for successful field application of reflective coatings to aging single-ply roofs?


What is the best way to prepare a horizontal concrete surface for successful application of an acid stain?


What is the best method for removing fluorescent orange spray graffiti from a brick wall?


What type of material should I use to achieve bright, bold colors on a concrete floor that gets heavy foot traffic?


What should be considered in replacing a wooden deck with one made of concrete, in terms of the options for appearance, color and cost?


How do I get permanently get rid of efflorescence on clay brick?


What causes concrete “dusting,” and is there any way to prevent or remove it?


We’re converting a grocery store to a motorcycle dealership. Should we polish the concrete floor or coat it? The concrete seems in fair shape, from what we can see under the dried mastic where the old vinyl tiles have been removed.


What’s the best way to protect porous masonry from graffiti?


How do I clean off mortar smears that were allowed to cure for six months on a new architectural block building?


How do I deal with the small cracks and fractures that occur along the edges and corners of the stone imprints in some of my stamped concrete work?


How do I prepare an oil-stained, bare concrete floor for coating?


How do you keep sealants in control joints from cracking or separating from the substrate?


How many times can a building be repainted before the paint becomes too thick to perform properly?


How do you strip paint from a cementitious substrate if you can’t alter the surface texture?


Can efflorescence be removed from integrally colored CMU without damaging the appearance? How?


What is the best way to remove graffiti from the surface of historic stone masonry on a church while preserving the appearance properties of the substrate?


 
 
   

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