Problem Solving Forum (75)


I understand that the EPA is reluctant to allow the use of nanoparticles in coatings, due to their tendency to persist in the environment. What is the real risk, and how can the nanocoating industry address it?


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


How does a lower-metallic-content zinc-rich epoxy affect the life of a paint system?


How do you determine the best type of coating for repainting a block or concrete building?


What are the performance distinctions among various types of intumescent coatings (for example, water-based, solvent-based, epoxies and methacrylates)?


Which factors are most important in selecting coatings for new concrete?


What are the criteria for selecting coatings for application during extreme (atmospheric) heat?


How do you adequately assess the adhesion of a newly applied coating?


What is best way to remedy over-thickness of a topcoat after it has dried and cured?


On a parking deck with harsh exposures—to road salt, frequent wetting, freeze-thaw cycles, and exterior weathering—what generic coating type works best, and why?


I need to remove coatings from masonry on a historic-preservation project. What are my options for doing so without damaging the mortar joints?


I’m converting a commercial space and am trying to decide on the floor. 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.


Do the balcony floor slabs on the high-rise seaside condo I’m working on in Florida really need cathodic protection?


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


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


What is the optimal moisture content for masonry before painting can begin?


How do you determine the best type of paint to use when repainting a block or concrete building?


How is it possible to determine if concrete is sound enough to receive a thick-film coating?


What is the definition of a hybrid coating, and what are the performance properties of hybrid coatings?


Theoretically, how many LEED credits can be acquired for a newly constructed building through the use of coatings and related technologies, such as diamond-polished concrete?


On a parking deck with harsh exposure conditions—from road salts, frequent wetting, and freeze-thaw cycles, to some exterior weathering—what generic type of film-forming coating works best and why?


I've seen claims of extreme durability for a new concrete floor coating material exposed to heavy foot traffic. Is there a quick test to determine the validity of these claims?


What is the best method for removing a day-glo orange spray graffiti from a brick wall?


What environmental and safety precautions need to be taken when removing lead-based paint from the brick on a commercial building adjacent to the sidewalk in a dense urban business district when the removal method is chemical stripping followed by water blasting?


What are the performance distinctions among various types of intumescent coatings? More specifically, the differences between water-based, solvent-based, epoxies and methacrylates?


Can you provide recommendations on ways to make sure an acid stain can be successfully applied to an existing horizontal concrete surface?


Can fluoropolymer coatings that are still very glossy be overcoated (if, for example, the topcoat is losing color or the color needs to be changed)? If so, what type of coating can be used, and what surface preparation is required?


Specifications often state that glossy surfaces must be dulled before overcoating. What are some methods for doing this, especially when sanding isn’t feasible?


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


What is the effect on the permeability of a coating when you add additional coats, either at the time of the original painting or as a maintenance activity?


What is the best way to assure compliance with specified dry film coating thickness requirements on vertical concrete?


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


In what circumstances is third-party inspection justified on commercial coating work?


I am the facility manager for a new amusement park that will operate year-round in a hot, humid environment. Some critical structural steel in the heart of the park needs to be protected from corrosion and at the same time to retain very good appearance properties for as long as possible, since maintenance painting is disruptive. What coating system should I select to achieve the longest useful life, given that cost is a secondary consideration, and how long will this system look good while providing corrosion protection?


What coating or lining system, including surface preparation, should be used on an in-ground swimming pool constructed of galvanized steel in a northern climate?


What is the best method of testing for moisture content in concrete masonry unit (CMU) walls prior to application of coatings?


How can you determine if a concrete substrate is in suitable condition for application of an acid stain?


What kinds and sources of data are available to support the use of antimicrobial agents in coatings for hospital substrates?


When coating an aged concrete floor, how should one determine the correct sequence of surface preparation among the options of pressure washing and grinding or other concrete removal and roughening methods?


What are the most important recommendations for ensuring success in field application of reflective roof coatings to aging single-ply roofs? Do these recommendations vary depending on whether the roof is EPDM, TPO, PVC, or some other type of substrate?


Is there a quick way to determine the validity of a claim of “extreme durability” for a new concrete floor coating material exposed to heavy foot traffic?


How does a lower-metallic-content zinc-rich epoxy affect the life of a paint system?


How do you determine the best type of coating for repainting a block or concrete building?


What are the performance distinctions among various types of intumescent coatings (for example, water-based, solvent-based, epoxies and methacrylates)?


How long after blasting can stainless steel be left before painting? If this time is exceeded, what further surface preparation is required?


Which factors are most important in selecting coatings for new concrete?


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


What are the criteria for selecting coatings for application during extreme (atmospheric) heat?


How do you know when pot life has expired? Can you extend pot life and, if so, how?


What is an acceptable level of moisture in concrete walls before painting with an acrylic system, and how should the moisture level be measured?


What kind of coating system provides the strongest resistance to staining from hot tires on garage floors and parking decks?


What kind of coating system provides the strongest resistance to staining from hot tires on garage floors and parking decks?


When a specification requires Manufacturer X’s system “or equivalent,” what does “or equivalent” mean, and who decides what’s equivalent?


On a parking deck with harsh exposures—to road salt, frequent wetting, freeze-thaw cycles, and exterior weathering—what generic coating type works best, and why?


What kind of initial treatment is the best defense against graffiti for rough-surfaced concrete block (CMU)?


Theoretically, how many LEED credits can be acquired for a newly constructed building through the use of coatings and related technologies?


What would be an optimal coating system, in terms of durability and productivity in field painting, for exposed structural steel on a stadium in a damp, cold environment?


I am the facility manager for a new amusement park that will operate year-round in a hot, humid environment. What protective coating system should I select to achieve the longest useful life (cost is a secondary consideration), and what performance can I expect?


What is the best combination of metal and coatings for creating bright colors on public art and sculpture, keeping in mind durability, cost, maintenance, and gloss and color retention?


What are the pros and cons of acid-staining a concrete floor?


During a week of heavy rain, we painted the interior of a heated concrete building. The paint blistered badly a week later on the walls with an outside exposure. What’s the best way to remove the coating, prepare the surface, and recoat to prevent future blistering?


If the walls of single-wythe CMU with core fill insulation become saturated, can they be adequately dried out for painting? If so, how?


What is the optimal moisture content for masonry before painting can begin?


How do you determine the best type of paint to use when repainting a block or concrete building?


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


How can you determine if a concrete substrate is in a suitable condition for application of an acid stain?


How is it possible to determine if concrete is sound enough to receive a thick-film coating?


What is the definition of a hybrid coating, and what are the performance properties of hybrid coatings?


What kind of coating system provides the strongest resistance to staining from hot tires on garage floors and parking decks?


Can light-weight block (CMU) be successfully coated to prevent water intrusion, or is it best to build with standard weight?


On a parking deck with harsh exposure conditions--to road salts, frequent wetting, freeze-thaw cycles, and some exterior weathering—what generic type of film-forming coating works best and why?


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 is the effect on the permeability of a coating when you add additional coats, either at the time of the original painting or as a maintenance activity?


What is the best way to assure compliance with specified dry film coating thickness requirements on vertical concrete?


Where there is likely to be ponding water, what generic type of reflective roof coating will work best and why?


 
 
   

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