A plastic water storage tank can get a bad rap. While you might think that harsh summers in Kolkata can damage the water tanks but this is not always the same for all poly water tanks. In this blog, we will find out how the sun’s light can be harmful to the water for poor quality water tanks and how Penguin Tank keeps the water safe from harmful UV rays.

How the Sun can damage your poly water tank?

On exposure to sunlight, moisture, air pollution, high temperatures, the plastic can degrade. In Kolkata, especially during the hottest months of the year, many things are under threat by the Sun, among which plastic water tank in Kolkata is one. A poly water tank can suffer from molecular degradation. UV degradation is not only responsible for damaging the tank’s aesthetics but is also responsible for damaging the tank’s structural strength. When the structural strength decreases, it can reduce the life span of the tank. Initially, UV rays will result in brittleness on the surface layer of the tank. After that, you might notice shrinkage leading to strains which can make them take even more prone to further oxidation. This is known as photo-oxidation. These are some of the signs of degradation in the poly water tanks as a result of photo-oxidation – cracking, chalking, catastrophic failure, discoloration, and brittleness.

Remember, dark-colored water tanks can show some chalking and loss in shine. However, these are merely superficial changes and will not affect the structural integrity of the tank. Check your tank regularly and if you see any other signs of damages other than chalking, fix that immediately before it becomes a major issue. The most important thing to remember is that color is not always the factor. When it comes to a plastic water storage tank’s ability to protect itself from the Sun, it is much dependent on the UV protection incorporated into the tank at the time of manufacturing.

How do poly water tanks achieve sunlight protection?

During the manufacturing process of roto-moulded poly tanks, a stabilizer resin is used which enables the tank to absorb the harmful UV rays of the Sun. UV stabilizer works by absorbing UV radiation and transforming this radiation into low-level heat, reducing UV degradation.

What is the normal life-span of a poly water tank?

The life span of a poly water tank does not have any definite answer. It varies due to many factors. Some major factors are – position of the tank, UV protection, and specific gravity rating appropriate for the water. One thing is clear that when high-quality polymer resins are used for a water tank, it can last more than 30 years.

Sunlight will affect your tank directly or indirectly. However, you can place your tank under a shade to give it the maximum level of protection. Also, it is suggested to buy poly water tanks from renowned water tank manufacturers in India like Penguin Tank and also take necessary suggestions from them before buying a tank.