pool plaster mottling

It has now been over a month since the re-plaster and the problems have NOT cleared up. Balanced pool water contains both CO2 and bicarbonate that will convert calcium hydroxide into calcium carbonate. We have our own crews for prep, plumbing, masonry and application of the best finishes the industry has to offer. The downside to standard white plaster is the surface is more susceptible to pool deterioration from pool water chemistry. unpredictable and flawed traits of colored plaster: mottling, unevenness in color, variations in shading and density, pigment stains, and the inevitable fading over time will occur with colored plaster. The reality is that there will always be some minor shading (mottling) and variation in the color and can … The water was always fine. Also, variations of shade will exist between color sample chips and mixed plaster. The pool was completed in February. Spot Etching of pool plaster can be caused by: Excessively “hot” plaster mix, with high calcium content. I have a 15000 gallon white plaster saltwater pool. From a simple 3-day plaster to a full remodel, we offer more choices than any other pool remodeler in SoCal. Now, six months later, the entire pool is mottled with some almost black areas and a … When typical balanced tap water fills a new uncured plaster pool, some of the plaster material can be dissolved and removed from the surface. But adding calcium chloride (CC) to a color pigmented plaster can also lead to blotchiness and mottling, which pigment manufacturers and the Portland Cement Association (PCA) warn about. Gray mottling discolorations occasionally occur in new white plaster swimming pools, and cause of this plaster defect is being incorrectly assigned. These conditions may also occur during the refill, when performing the needed repairs, or after the completion of the repairs. White pool plaster sometimes becomes a mottled gray (or grey) color, either immediately or a few months after the new plaster pool is filled with water. (-) Generally, white pool plaster has no manufacturer's warranty. Use the bonding additive (to mix the plaster with, and wet the area to be patched. (-) White plaster stains easily. Pool plasters will have slightly different concentrations of each chemical to optimize resistance against water, but the fundamentals are universal. Below is a link to a closeup of our pool with medium grey plaster (it's actually a picture of the mosaics, but the only one I have that kind of shows the mottling). Beyond the bench you can see some of the natural mottling, hopefully this will give you an idea of normal mottling versus problem areas. Duran witnessed the defective plaster before filling the pool with water, but said it was "Normal" and would clear us in 30 days. A few months ago I had posted a question on here about some streaky stains I noticed on my pool.. After more research and observation, I wanted to pose a question and ask for followup advice. A few months ago I had posted a question on here about some streaky stains I noticed on my pool.. After more research and observation, I wanted to pose a question and ask for followup advice. After a couple of days I began noticing gray mottling and streaks in the plaster. Mottling of the pool plaster This occurs during the mixing of the concrete or plaster for the pool and appears as dark, mottled stain patterns on the pool walls and floors. 5. Torching can cause expansion of the plaster matrix leading to micro-cracking, increased porosity, and cause friability (crumbing) of the plaster. Or use a pool plaster repair kit, like our EZ Patch pool plaster with bonding additive. Quartz Plaster: quartz aggregate and white cement (ratio of 2/1), pigment, if applicable, and water. Tricalcium Silicate. ... nor even references in the NPC Tech manual. The pool was completed in February. MOTTLING - The pool plaster finish is usually a white portland cement product, and is troweled with steel trowels and chemically active (hydrating and releasing minerals) for several years after installation. I drained my 18000 gallon concrete pool that I built myself 7 years ago, to do some maintenance on it. The Swimming Pool Plaster Process: Important Note on Colored Plaster By its nature, colored plaster will accentuate all of the characteristics normally found in white plaster. Standard white plaster is a reliable product when installed by a quality contractor and properly maintained. Gray (or grey) mottling discoloration is due to high amounts of calcium chloride added to a plaster mix, and or late, hard and dry troweling. From turning a pool wall into an infinity wall to adding a … Plaster pool finishes can provide many years of service under ideal conditions, however, ours is rarely an ideal world. What causes that to happen? INTRODUCTIONSwimming pool plaster is a relatively thin [thickness 9.5 to 19 mm ( 3 /8 to 3 /4 in.)] Brush pool walls and floor daily for the first 2 weeks. Easy-Spred® will also improve the pumpability and workability of white plaster pools while maintaining excellent set time consistency and improved hardened properties of the pool finish. It’s not as difficult as it sounds. Important Note: these suggested guidelines are based on feedback from our customers throughout the nation. Colored plaster may also exhibit pigment stains, streaks, unevenness of color and more noticeable checking and crazing. By its nature, colored plaster will accentuate all of the characteristics normally found in white plaster. 7. If the pool is new the pool contractor can do a “zero alkalinity” treatment to address the mottling and make the pool … Colored plaster may also exhibit pigment stains, streaks, unevenness of color and more noticeable checking and crazing. However, it is very difficult for plasterers to produce a uniform and consistent color. Mottling, for example, can be more pronounced in colored plaster than in white. 6. This part might feel a little technical, but bear with us. Mottling is not a defect in application. Check with your pool store to purchase chemicals that will prevent these stains. Unlike dyed marcite plaster, ColorQuartz ® coated granules deliver even, non-stop color without fading, bleeding, mottling, or pigment stains. For your pool plaster supplies, pour in premixed white Portland cement and marble dust; 2:1. Mottling, for example, can be more pronounced in colored plaster than in white. Mottling, for example, can be more pronounced in colored plaster than in white. Even the Cal Poly/NPIRC test pool studies on color pigments provided confirming results. Therefore, if balanced tap can dissolve new plaster, what happens when Acid (aka “Zero Alkalinity” or “Hot”) start-ups are performed on new plaster? Trowel smooth with a round ended trowel. I have a 15000 gallon white plaster saltwater pool. But etching of pool plaster indicates a soft spot of plaster that has degraded or deteriorated, and is also most prevalent on steps and swimouts, around wall fittings, pool lights and under the tile line. Because of this, and the chemistry of the pool water acting on I called my plaster contractor and both he and his plasterer came out and tested the water several times. Shading and color variations are known as mottling, and distinct from surface stains and deposits, mottling may appear as grayish hued areas. Your Blue Haven designer will explain the SmartBrite ® ColorQuartz ® material warranty and provide samples so that you can see—and feel—your color options. While doing that, we're trying to make the rest of it as perfect as possible. The plaster surface is meant to degrade slowly, eventually requiring a fresh coat. An attractive plaster color (other than white) is often preferred by pool owners. However, this time the plaster was defective, turning out with a lot of blotching, mottling and discoloration. Gray mottling discolorations occasionally occur in new white plaster swimming pools, and cause of this plaster defect is being incorrectly assigned. This issue has nothing to do with the water chemistry or the way the pool was originally started up with chemicals when initially filled with water. Discolorations – New pool plaster can discolor (darken or turn gray) from adding excessive calcium chloride set accelerator, from late hard troweling, from thin and thick areas due to an uneven shell, etc. It is more evident in colored plaster pools, but not more prevalent. Also, variations of shade will exist between color sample chips and mixed plaster. A Note on Colored Plaster. Gray Mottling Plaster Discoloration #5 This fifth article provides additional evidence that gray (or grey) mottling discoloration (which often takes several months to develop) is caused by improper plaster workmanship. It is fully understood that if Easy-Spred® imparts a creamy feel to the plaster allowing trowels to glide easier and faster, saving time and money. Before draining, I called the company that plastered it and asked about mottling of the blue plaster surface... they said that was not unusual. (-) Pool Plaster is heavy in pool … Colored plaster may also exhibit pigment stains, streaks, unevenness of color and more noticeable checking and crazing Also, variations of shade will exist between color sample chips and mixed plaster. It is the carbonation process that forms a thin protective layer of calcium carbonate. There are strategies than can be employed to lessen the mottling, such as sequestering, chelating, or pH and calcium reduction. The concrete/cement industry has determined that late hard troweling can cause cement/concrete (white or gray) surfaces to darken, mottle, and become spotted. WARNING: Special problems to plaster, fiberglass or other pool surfaces, such as crazing, spalling, chipping, peeling or de-lamination may result from emptying the pool/spa. Mottling is color variations in the plaster due to different levels of hydration, inconsistencies in materials and application. Mottling, for example, can be more pronounced in colored plaster than in white. Mottling – Mottling occurs naturally in most pools. The service life of the surface is typically 8 to 12 years. Hello all, We're getting quotes for tile/coping work to fix some issues on an older (late 80's maybe) Anthony and Sylvan plaster pool. Mottling, for example, can be more pronounced in colored plaster than in white. We have some staining and then some off-color mottling all over. Occur during the refill, when performing the needed repairs, or and! To 12 years lot of blotching, mottling and discoloration dyed marcite plaster ColorQuartz. Since the re-plaster and the problems have not cleared up the mottling, for example, can be more in! Each chemical to optimize resistance against water, but bear with us other than white is... Of the plaster allowing trowels to glide easier and faster, saving time and money color pigments confirming!, inconsistencies in materials and application of the plaster allowing trowels to glide easier and faster saving... 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