Can you drain an indoor gunite pool and leave dry for up to 6 - 8 weeks?

Draining an indoor gunite pool and leaving it dry for 6-8 weeks can pose several risks and potential damage to the pool structure, liner, and overall pool system:

1. Structural Issues: Gunite pools, also known as concrete or shotcrete pools, are structurally designed to hold water. When drained, the weight of the water is no longer present to counteract the pressure exerted by the surrounding soil. This can cause shifting, cracking, and even collapse of the pool walls and floor, especially if the soil around the pool is not properly drained or has poor drainage.

2. Liner Damage: If your indoor gunite pool has a vinyl or fiberglass liner, draining it and leaving it dry can lead to damage to the liner. The liner is designed to be submerged in water, and when exposed to air and UV radiation for an extended period, it can become brittle, crack, or develop pinholes.

3. Pool Equipment Damage: Draining the pool and leaving it empty for weeks can also damage the pool's equipment, including the pump, filter, heater, and plumbing system. These components are designed to operate while submerged in water, and running them dry can cause overheating, seal failures, and even catastrophic damage.

4. Pool Finish Degradation: The pool's finish, which can be plaster, paint, or tiles, may suffer from drying out and cracking when exposed to air for an extended period. This can lead to leaks and deterioration of the pool surface, requiring expensive repairs or refinishing.

5. Algae and Mold Growth: During the draining period, the empty pool can become a breeding ground for algae, bacteria, and mold due to the moisture and lack of proper sanitation. Removing and cleaning these contaminants can be a challenging task when refilling the pool.

6. Hydrostatic Pressure Concerns: If the water table in the surrounding area is higher than the pool, it can create hydrostatic pressure against the empty pool, potentially leading to structural damage.

To minimize these risks and ensure the safety of your indoor gunite pool, it's strongly advised to consult with a professional pool contractor before draining the pool for an extended period. They can assess the specific conditions and advise on proper maintenance procedures to protect the pool from potential damage.