First of all you are talking about two absolutely totally 100 different things.
What is mottling of pool plaster.
Mottling is an inherint characteristic of any colored or even white plaster.
So what causes plaster damage like stains streaks erosion etching pitting mottling discoloration and hairline cracks.
Gray or grey mottled discoloration also known as water entrapment or hydration is difficult to remove may be remedied by.
Pool mottling the variations in the color of cement or pool plaster is a common concern among pool owners and pool remodelers alike.
Follow the magic marcite pool water chemistry letter without fail for the first 12 months of your pool finish life.
Again this slight difference still has to do with the fact that plaster is made of a mixture of water cement and aggregate and is a hand crafted product.
It is not caused by improper water chemistry.
Use the bonding additive to mix the plaster with and wet the area to be patched.
Out of balance pool water chemistry.
This should be under warranty and no charge to home owner.
The pool may need to be left empty a day or 2 to air dry.
One common cause of plaster deterioration is improper pool water chemistry.
The only thing.
For your pool plaster supplies pour in premixed white portland cement and marble dust.
In some cases chemical balances may be off when a new pool is.
Trowel smooth with a round ended trowel.
Or use a pool plaster repair kit like our ez patch pool plaster with bonding additive.
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.
While pool mottling may sound.
Drain and lightly acid wash pool then heat affected areas with a propane torch.
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.
Ranging from unnoticeable to severe the mottling of pool finishes like quartz and plaster as well as cement decks is unpredictable and can happen to any pool.
It is normal and unavoidable.
The concrete cement industry has determined that late hard troweling can cause cement concrete white or gray surfaces to darken mottle and become spotted.
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.
It is not a defect.
Etching is deterioration of plaster due to water chemistry.
Even the cal poly npirc test pool studies on color pigments provided confirming results.
One of several factors may be the culprit.
