Re-grouting every season sounds a trifle excessive, I wondered if you are using a proper pool grout. We also have a mosaic tiled pool which was constructed in May 2010, and the original tiling and grouting is still fine. Incidentally our pool is never drained. (Avoids large, rapid, fluctuations in temperature and water absorption which can affect the grout)I'd think twice about using mosaics
Usually every season start , at least the bottom of the pool has to be re-grouted (a bitch to do with mosaics)
Re-grouting every season sounds a trifle excessive, I wondered if you are using a proper pool grout. We also have a mosaic tiled pool which was constructed in May 2010, and the original tiling and grouting is still fine. Incidentally our pool is never drained. (Avoids large, rapid, fluctuations in temperature and water absorption which can affect the grout)
Over winter we add copper sulphate as a long term algaecide, and vacuum it out to waste in the spring.
David
We were also rather concerned when it was first recommended, as we had about 10 cats and 3 dogs who drank and/or swam in the pool, and thriving borders and hedging where we were proposing to dump the copper sulphate sediment in the Spring. We were slightly reassured when we bought the first load from the recommended supplier. We struggled to make ourselves understood until suddenly the light dawned and he triumphantly exclaimed "blue stuff for pools" and shovelled out our required 6 kilograms from a bin holding a few tons. We were further reassured when after a few years all our cats and dogs were still fit and well, and the vegetation was still thriving. ( I since calculated that an average human with a body weight of 75 kg would need to drink 8.25 litres of our pool water to reach the level at which any toxicity was discernible.)I'm not sure how good that is for the environment, copper sulphate use in Europe is banned for agriculural purposes. It is allowed here in Turkey and called Göktaş, which is often sprayed on fruit trees in Spring.
In days gone by people used to light bonfires and make them smoky under their fruit trees through Jan and Feb to deter the moths and fruit flies that lay eggs on the buds and cause damage. Have you tried anything similar in TC?