5 Reasons to Choose Thermapool

1. Thermapool prevents up to 86% of heat loss from your pool

Everyone knows heat evaporates from the top of swimming pools. However, there are other areas that lose significant amounts of heat that are often not considered by builders. Whether the pool is above-ground or in-ground, the sides and bottom of the pool lose heat into the soil. Research proves Thermapool is very effective at preventing this heat loss.

2. Compliant with Part L 2010 Building Regulations

Thermapool insulation panels are independently proven to give u-value calculations which meet that required by the new UK building regulations coming into effect in 2010. With regulation now requiring insulation for all new build indoor swimming pools insulation has never been more important. One day, the regulation may apply to all swimming pools..

3. See the benefits quickly

The cost of installing Thermapool can be recouped within two years of installing it just through what you save on your  heating bills! And since the government's energy regulator, Ofgem, is approving grants to insulate swimming pools using Thermapool swimming pool insulation your savings can be up to £3,500 from the time you complete your swimming pool build or refurbishment project.

.4. Zero Moisture Absorption

Few insulation materials have been independently tested for use in swimming pools. Thermapool's research since 2003 proved most conventional insulation materials quickly absorb moisture and would lose their insulating efficiency in a swimming pool. When you use Thermapool you know you are using a tried and tested designed for purpose swimming pool insulation system..


The insulation materials suitable for use in building construction above ground should not be used in a swimming pool where contact with moisture would make them lose all their insulating properties, rendering them useless for their purpose and a waste of your money.





Polyurethane Panel Pool

Polystyrene Building Blocks

Polystyrene Sheets


Independently Tested with Government Energy Saving Grants 


Maintains Thermal Performance in Pools


Conforms to industry standards including:
BS EN 13164:2001
BS EN 13172:2001
EN 14891
BS EN 12003
BS 5385-3


Steel which does not rusts


Swimming Pool Construction Method

New build only

New build only

New & refurbishment (Retrofitted)

Complete Swimming Pool Construction

Type of Swimming Pools

PVC only

PVC only

For all Pools

 PVC, steel, tiles, Rendered, Pool Plaster


Change In Thermal Conductivity With Moisture after seven days.

A costly mistake was made at the Helios Olympic swimming pool in Brussels, which had to be reinsulated as the Polyurethane insulation had taken on moisture.

This picture shows water being squeezed out of the Polyurethane swimming pool insulation that was removed.

When moisture is absorbed into insulation IT LOSES its insulating properties. This accelerates heat loss, causing increased energy consumption.

It leads to physical deterioration of the insulation, resulting in dimensional changes which compromise structural integrity.

Wet insulations in low-temperature service have no opportunity to dry out. Moisture migrates to the point of lowest temperature and builds to permanent liquid saturation.
Dry weight of polyurethane 55 kg m³

Wet weight of polyurethane   495 kg m³

The majority of other insulating materials absorb water and lose their insulating efficiency. Thermapool is resistant to both liquids and vapours. Thermapool will not deteriorate through age or usage and its insulating efficiency will not diminish in pools. Thermapool has the strength, durability and elasticity to withstand minor ground settlement cracks. With no visible cracks, swimming pools retain their quality looks for longer.


5. Internally-Installed Insulation

Thermapool is installed on the inside of the pool structure for maximum efficiency - our research shows this is 55% more efficient than insulating with Thermapool externally. When insulation is placed on the outside of the structure we found only 41% of the heat loss is stopped. Heat loss from the swimming pool basin is due to heat escaping through the foundation into the ground (thermal bridging) and through the coping stone.