![]() But the most unfortunate point is that the plaster surface WILL BE ETCHED after the zero alkalinity process is performed. ![]() While the zero alkalinity process may occasionally lighten gray discolorations, it sometimes doesn’t work, or the gray color returns soon afterwards. If aggressive water is used to lighten gray mottling, how is it that slightly aggressive water caused white plaster to darken and turn gray, and in a blotchy, streaky, or spotting fashion in the first place?Īcidic treatments are an undesirable and improper suggestion for the service tech or pool owner to perform on a new plaster job. significantly aggressive water with a Saturation Index of -4.0). Dukes suggest that service techs perform a “zero alkalinity process” (a.k.a. Interestingly, to remove gray discolorations, Mr. Sadly, these incorrect claims enable pool plasterers to avoid responsibility for improper practices, and place blame on to innocent service techs or pool owners. There is no research study that supports their theory, not the Arch Study, the NPIRC studies, nor even references in the NPC Tech manual. NPC representatives, Greg Garrett and Randy Dukes, incorrectly claim that aggressive water or improper water chemistry startups causes the graying discoloration (NPC Jan-Feb 2004 & Fall 2007 newsletter, Techlines 7 th Edition). Usually, this type of staining can be easily and safely removed from the surface by acid washing, sanding, using sequestering or chelating chemicals, or other stain removal products.įor this article, we are discussing a blotchy or streaky gray discoloration that develops during the first few months, a discoloration that is difficult to remove, and is often incorrectly termed as a “hydration problem” or “entrapped moisture.” This type of dark discoloration should not be confused with metal or mineral staining. Gray (also spelled “grey”) or darkened blotchy discoloration of cement flatwork is known to be caused by several improper practices, including the addition of calcium chloride to the mix (even less than 2%), late hard troweling, and sometimes a cement material issue can lead to this problem (Concrete Slab Surface Defects: Causes, Prevention, Repair Portland Cement Association 2001).Īlthough some discolorations are the result of metals precipitating and depositing various color residues onto the plaster surface, these are referred to as surface staining. Gray mottling discolorations occasionally occur in new white plaster swimming pools, and cause of this plaster defect is being incorrectly assigned. ![]() Outdoor Living Space IdeasĬall for design ideas on outdoor living spaces to compliment your backyard oasis.Posted by Kim Skinner on Septemat 11:08am Precast Concrete Stone – Precast concrete wall caps (or coping) can be placed on any wall to add protection and beauty. Flagstone and Cobblestone are only a few ideas to help you create a great decorative design for your backyard pool. Natural Stone Materials – Look to Cougar Stone to find selections of natural stone for your swimming pool renovation. Natural Stone (Master Tile) – Find coping and decking selections to complement your pool plaster repair. Look to these guy’s for quality tiles and coping.īullnose Bricks– ideal for wall caps, pool coping and paving edges. Master Tile – Luxury finishes for your swimming pool. BASF doesn’t make plaster, they make it better. Metamax® – High Quality Pozzolanic Additive for Pool Plaster. Hydrazzo® – The most beautiful pools in the world are surfaced with the hand-polished magic of Aquavations Hydrazzo®. StoneScapes® – Give your pool or spa the natural beauty of a pebble-bottomed stream with a StoneScapes pool finish.īeadCreate® Pool Finish – contains solid, inert, glass spheres locked into an aggregate matrix to create a extraordinarily beautiful 3D look. Quartz100% – A premium blend of crushed quartz, white cement and mineral-based pigments, QuartzScapes® merges beauty and strength for a stunning pool finish. White Colored – Reflect the colors of nature in your pool or spa with PlasterScapes™ tinted pool plaster.Ĭolored Quartz – add lasting beauty to your plaster finish.ĬolorScapes® – High Performance Blend Pool Finishes Pool Plaster and Repair Options for Spring Areas:
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