Table of Contents
Is pool mottling normal?
mottling is an inherint characteristic of ANY colored or even white plaster. it is not a defect. it is not caused by improper water chemistry. it is NORMAL and unavoidable.
What causes mottling in pools?
Gray (also spelled “grey”) or darkened blotchy or streaky discoloration of pool plaster (cement flatwork) is known to be caused by several improper plastering practices, including the addition of calcium chloride to the mix (even less than 2%), late hard or dry troweling, and sometimes a cement material issue can lead …
What is mottling in pool plaster?
Gray (or grey) mottled discoloration (also known as “water entrapment ” or “hydration”) is difficult to remove, may be remedied by acid washing, sanding, or torching the surface, but these processes are generally detrimental to a plaster finish and the discoloration often returns later.
What is pool etching?
Etching is caused when your pool becomes almost too rough to touch. This is from lines, dents, and divots forming into your pool plaster over time. Causes are from poorly balanced pools, low pH, and alkalinity. Refrain from adding or letting salt sit in your pools soon after plastering; this may increase the pH levels.
How do you fix pool mottling?
Sometimes, depending on severity, the appearance can be improved by an in-pool acid wash. Extreme cases may require the pool to be drained and acid applied directly on the finish. For quartz pool finishes, an acid wash might be able to reduce the appearance of mottling.
Can you acid wash a pool without draining it?
– You bet! We can acid wash a pool without draining the water or damaging the surface. Remember, many people mistakenly believe that acid washing is a ‘cure all’ for swimming pool stains.
Why is my pool surface rough?
Bad pool chemistry such as a high pH and/or calcium hardness among others are seen on the pool plaster surface soon within days or weeks. Remember cement is the base of ALL POOL PLASTERS. Salt: Salt itself from a saltwater pool has issues of attacking cement in plaster over time causing a rough finish.
How do I remove stains from my pool?
How to Remove Metal Stains in Your Pool
- Step 1: Lower You Water’s Chlorine Levels.
- Step 2: Add Algaecide.
- Step 3: Apply Vitamin C on the Stain.
- Step 4: Add Ascorbic Acid for Larger Stains.
- Step 5: Circulate Your Water.
- Step 6: Check For Residual Stains.
Can I acid wash my pool myself?
When the pool is clean and completely empty, you can begin to acid wash the plaster, in the deep end. Put on protective clothing and rubber boots, goggles and wear a breathing mask designed for acid fumes. Do not use a pressure washer to rinse the acid however, just a regular garden hose with a nozzle.
Can you clean a pool without draining it?
Although you can clean a pool without draining it, there are specific instances where draining your pool IS necessary. If your pool needs a repair that can’t be done with water still in the pool, then you need to drain it only with the approval or supervision of a pool professional.
How do you smooth a pool surface?
Sand the rough areas with 80 grit wet/dry sandpaper and a sanding block. Sanding by hand will give you the most accurate results. Make sure you sand all of the areas you want to smooth out and use a step ladder if you have trouble reaching.
How long does it take for pool mottling to go away?
Mottling started within two months of filling pool and continues to worsen. Pool uses about a gallon of acid per month. Pouring acid on stain on steps doesn’t do anything except create a little white cloud/dust. Help, what is the solution? Enjoying this content?
What’s the difference between white and gray mottling plaster?
There is a distinct difference between “gray mottling” discoloration on white plaster and a “light or white” discoloration on black, gray, or dark colored plaster.
Why is the cement on my pool turning gray?
The addition of calcium chloride to a plaster mix is also known to cause graying of cement, in addition to making the plaster less durable over time. Gray mottling of new plaster pools is sometimes accompanied with “white soft spots” or streaking (also incorrectly called “spot etching” or “etching deterioration” by plasterers).