Do Water Storage Tanks Freeze? 31st August 2022

Do Water Storage Tanks Freeze?

For a wide range of businesses, residences, and organisations, having a water tank may be essential. Installing a water tank can be a simple solution for both producing and storing water. And you don’t really have to pay much attention to it. Unless something goes wrong.

When water in tanks freezes it can be a real cause for concern. At best, it will cause only a temporary suspension in the provision at water. Worst case, it can seriously damage the tank within which the water is stored.

For this reason, it’s imperative to take some preventative measures in orders to stop water from freezing in tanks. Especially when the tanks are located in areas where temperatures have a sure potential to drop below freezing.

Fortunately, there’s a few simple actions that can be taken when selecting and managing your water storage tank. These actions can be taken to reduce the likelihood of water freezing in your tank.

Choosing Your Tank

According to the known laws of physics, the larger a body of water, the longer the freezing time. Based on this, that means that selecting a larger tank will decrease the probability that the water inside will freeze.

Cold Water Storage’s range of GRP Cold Water Storage Tanks are available in a wide range of sizes. They’re WRAS approved and manufactured to the highest standard

Heating Systems

Having a water heating system in place can be a sensible move, particularly during the winter months. This sort of system should ensure that the water won’t freeze, even in very cold temperatures.


Making sure the tank model chosen has adequate insulation as a feature is an easy approach to avoid water from freezing in tanks.

Glass-reinforced plastic, also known as GRP, is by definition an insulating material. Additionally, we have other methods for insulation such as using tank lining systems which also have extra benefits such as corrosion and chemical resistance and bacterial growth prevention.


The tank must be frequently inspected for leaks and cracks after it’s been installed. As well as the main structure, the pipes going to and from the tank also need to be examined. This type of monitoring is crucial during the winter season.

If there are any cracks in the tank at all, it will be easier for the cold to enter the tank and hasten the freezing process.

Tank Material

Tank material is an important factor to consider if freezing of the water is an issue for your location. Choosing a tank that’s made out of rigid material, like metal, would be less able to sustain the expansions that are caused by the freezing process.

Compared to metal, plastic would be much more flexible for this. Because if a plastic tank did freeze, the material has some give to accommodate for the volume increase. In a metal tank, cracks could develop if the same thing happened.

Cold Water Storage

Freezing tank water is a legitimate worry. But with the right kind of tank, it doesn’t have to be. Especially with adequate tank care and additional (or necessary) features.

Cold Water Storage’s aim is to provide customers with the most cost effective and professional solution for their water management systems. And thanks to our collective 30 years’ experience, we can do this confidently – we offer bespoke services to suit any client in any industry manufactured by our expert team of engineers.

Get in touch with the CWS team for any tank issues including repairs, replacements, and refurbishments as well as our other services. Why not take a look at our brochure?

Call us on 01943 872 311 or send us an email at