They help to increase the temperature of the pool water. They reduce, in fact almost eliminate, heat loss from evaporation. They help to retain heat in the swimming pool. They help to reduce dirt and debris contamination of the water.
To get the most of these benefits, it is important that a cover fits the pool well. To be most effective they need to lie flat on the water, without any exposed areas or curling up the wall. This will allow the greatest amount of solar energy to heat the water.
If any water is left exposed then the benefits are greatly reduced, allowing greater evaporation and less heat gain.
It is important therefore that the starting point is accurate measurements. Measurements should be taken at the water level and between the pool walls. For basic shapes, such as round, rectangular or pools with roman ends, the finished product can then tailored exactly to match your pool. For highly shaped pools however, this may not be possible. For these pools you need to measure the longest length and the widest width, order accordingly then trim on the pool.
When you install your cover, it should be placed flat across the pool with the bubbles on the underneath. Try to smooth out any wrinkles as you go, although due to the nature of the material, this may take a couple of weeks. Extra care should be taken when handling the cover on the pool surround as it is easy to drag and then damage the bubbles.
If required now trim the cover using a pair of household scissors. If your pool is a complex shape then it is best to do this in two stages. Initially cut the cover about six inches larger all round, and then go round a second time fine trimming in. If you are using a reel system with your cover, then it is sometimes best to have the cover a couple of inches narrower than the pool. This allows the cover to glide easily over the water, without the friction caused by rubbing on the pool wall.
At this stage, if you are using a reel system, fit the straps that connect the reel to the cover. These are normally fitted every 12 to 18 inches apart, but always follow manufacturers instructions.
Your cover is now measured, installed and ready to do its job. To get the most from the life of your cover we recommend that you follow these points regarding on-going care and maintenance.
Never drag the cover across rough surfaces or the edge of the pool. Damage is highly likley to occur to the bubbles.
When the solar cover is not in use and on the reel, it should be covered with the white protective sheet provided.
The cover should be removed from the pool whilst chemicals are added, and not replaced until normal levels are reached. The cover should never be in contact with chlorine water that has a concentration of greater than 3 parts per million. Damage caused by excessive chemical exposure is excluded from the warranty.
The cover should be kept clean to allow more sunlight to pass through and heat the water.
Remove in the Autumn and replace with a winter cover.
Before storing your solar cover, you should clean it and allow it to dry thoroughly to prevent mildew. Fold carefully and replace in its bag. Store in a clean dry place until the Spring.