Thinking Of Draining Your Fibreglass Pool: Think Again
Draining a fiberglass pool can cause a number of issues, and it's generally not recommended unless ABSOLUTELY necessary. Here are some reasons why:
Structural Damage: Fiberglass pools are designed to be filled with water to maintain their structural integrity. When drained, the pool shell can potentially shift or warp due to the lack of water pressure. In some cases, the pool may even pop out of the ground if the surrounding soil is wet or the water table is high.
Gel Coat Cracking: The gel coat that covers the fiberglass pool is susceptible to damage when exposed to air and sun for extended periods. UV rays and the elements can cause it to crack, fade, or degrade.
Surface Damage: Draining the pool can lead to a dry surface that may become brittle, leading to damage to the surface. Any debris or sharp objects can cause scratches or cracks when the pool is empty.
Pool Equipment Damage: Some pool equipment, such as pumps, filters, and heaters, may need to be re-calibrated or adjusted after draining the pool. If not done properly, the equipment may get damaged or malfunction.
Chemical Imbalance: Draining the pool could disrupt the balance of chemicals, making it difficult to maintain the proper levels once the pool is refilled. This may result in poor water quality and the need for more intensive cleaning and treatment.
In short, unless you need to perform repairs or resurfacing, it's usually safer to maintain the pool's water level rather than drain it completely. If draining is necessary, it's important to take the proper precautions and possibly consult with a professional pool service.
If you STILL decide to drain your fiberglass pool, it's important to take several precautions to avoid damage to the pool structure and surrounding area. Here’s a step-by-step guide on what you should do:
1. Check the Water Table and Ground Conditions
High Water Table: If you live in an area with a high water table, draining the pool can cause it to float or shift. If this is the case, consult a professional before draining.
Soil Conditions: Ensure the ground around the pool is not overly saturated, as wet soil can increase the risk of the pool shell shifting or popping out.
2. Clean the Pool Before Draining
Vacuum the Pool: Remove debris and dirt by vacuuming the pool.
Check for Leaks: Make sure there are no leaks or cracks in the pool before draining, as these issues can worsen once the pool is empty.
3. Prepare the Pool for Draining
Turn off All Equipment: Switch off the pump, filter, and any other equipment connected to the pool to prevent damage while the pool is empty.
Remove Pool Accessories: Take out ladders, toys, skimmers, and any other accessories that may get damaged or in the way.
4. Use the Correct Draining Method
Pump: Use a submersible pump to remove the water. Be sure to follow local regulations on water discharge, as draining pool water into storm drains may be prohibited in some areas.
Drain Slowly: If possible, drain the pool slowly to avoid sudden shifts in the pool shell. Draining too quickly could lead to uneven pressure, increasing the risk of damage.
5. Inspect the Pool Shell for Damage
Once the pool is empty, inspect the fiberglass shell for cracks, chips, or any signs of stress. If you notice any damage, make repairs immediately to prevent worsening while the pool is dry.
6. Protect the Pool Surface
Cover the Pool: If the pool will be empty for an extended period, cover the pool to protect the fiberglass from sun exposure, UV damage, and dirt.
Monitor for UV Damage: If you leave the pool empty for any length of time, regularly check for any signs of UV damage to the gel coat, such as cracking or fading.
7. Refill the Pool Gradually
When it’s time to refill, do so gradually to allow the pool shell to adjust to the water pressure evenly. Avoid filling the pool too quickly, as it can cause the shell to shift or crack.
Chemical Balance: Once the pool is refilled, test the water chemistry (pH, chlorine levels, alkalinity, etc.) and adjust it as needed.
8. Reinstall Pool Equipment and Accessories
Once the pool is filled and the water quality is balanced, reinstall your pool equipment and accessories. Make sure everything is functioning properly.
9. Consult a Professional (If Needed)
If you are unsure about any part of the process, or if you have concerns about potential risks, it’s always a good idea to consult with a pool professional to guide you through the draining and refilling process safely.
Taking these precautions will help minimize the risks and ensure your fiberglass pool remains in good condition after draining.