Should you drain a fiberglass pool for winter?

No. Fiberglass pools should never be fully drained for winter. The water inside the pool counterbalances external soil and groundwater pressure. Draining exposes the shell to hydrostatic uplift, which can cause the pool to shift or pop out of the ground. Instead, lower the water level slightly, winterize the plumbing, and install a quality pool cover.

How do you winterize a fiberglass pool?

To winterize a fiberglass pool: lower the water level below the skimmer, balance your water chemistry, add a winter algaecide, blow out and plug the plumbing lines, remove and store equipment that could freeze, and install a quality winter safety cover. In the Mid-Atlantic region, complete winterization before the first hard freeze.

Can ice damage a fiberglass pool?

Surface ice on the water typically does not crack the fiberglass shell because the shell can flex. The greater risk is ice forming inside plumbing lines and equipment, which can crack pipes and fittings. Using an ice compensator or leaving a partially inflated ball in the pool can help absorb expansion pressure at the surface.

Do fiberglass pools need a winter cover?

Yes. A winter safety cover keeps debris out of the pool, reduces algae growth over winter, and protects against physical damage. Safety covers also prevent accidental falls into the pool during the off-season. For fiberglass pools in cold climates, a properly fitted inground pool winter safety cover is strongly recommended.

Do Fiberglass Pools Crack in the Winter?

June 20, 2024Swimming Pools BlogSwimming Pool Professionals

<< How to Take Care of Your Fiberglass Pool | Do Fiberglass Pools Break Down? | What Causes Spider Cracks in Fiberglass Pools? >>

Fiberglass pools are known for their durability and low maintenance, but concerns often arise about their performance in winter conditions. Proper winterization is key to preventing damage, including cracking, which can occur due to freezing temperatures. Understanding how to protect your pool during the winter months is crucial. Here’s an in-depth look at whether fiberglass pools crack in the winter and how to prevent it.

Understanding Fiberglass Pool Construction

1. Flexibility and Strength: Fiberglass pools are constructed from a flexible yet strong material that allows them to withstand various environmental conditions. This flexibility helps them resist cracking better than rigid materials like concrete.

Tip: Choosing a high-quality fiberglass pool shell ensures enhanced durability and long-term performance.

2. Gelcoat Surface: The gelcoat surface of a fiberglass pool provides a smooth, non-porous finish that is resistant to algae and stains. However, it can be susceptible to damage if not properly protected during extreme weather conditions.

Tip: Many fiberglass pool models come with advanced gelcoat formulations designed for longevity.

Risks of Winter Damage

1. Freezing Temperatures: When water inside the pool or surrounding soil freezes, it expands. This expansion can exert pressure on the pool structure, potentially leading to cracks if the pool is not properly winterized.

Tip: Winterizing your inground fiberglass pool correctly is essential to prevent freeze-related damage.

2. Hydrostatic Pressure: If groundwater around the pool freezes and expands, it can increase hydrostatic pressure on the pool shell, leading to potential structural issues.

Tip: Ensuring proper drainage around your fiberglass pool shell can help mitigate hydrostatic pressure.

Winterization Steps to Prevent Cracking

1. Lower Water Level: Lowering the water level in the pool below the skimmer helps prevent freezing water from damaging the pool’s plumbing and structure.

Tip: Ensure the water level is properly adjusted before winter sets in. See How to Install a Fiberglass Pool Shell for a detailed overview of the process.

2. Use Winterizing Chemicals: Add winterizing chemicals to the pool to maintain water quality and prevent algae growth during the off-season.

Tip: Using high-quality winterizing chemicals ensures the water remains balanced and protects the pool shell.

3. Install a Pool Cover: A high-quality pool cover protects the pool from debris and helps maintain a stable temperature, reducing the risk of freezing.

Tip: Investing in a durable Inground Pool Winter Safety Cover provides essential protection throughout the winter.

4. Drain Pool Equipment: Drain water from the pump, filter, heater, and plumbing lines to prevent freezing and cracking.

Tip: Follow the manufacturer’s winterization guidelines to protect all pool equipment.

5. Use a Freeze Protection Device: Consider installing a freeze protection device that automatically activates the pool pump when temperatures drop, circulating water to prevent freezing.

Tip: A freeze protection device adds an extra layer of safety against winter damage.

Regular Maintenance and Inspections

1. Inspect the Pool Shell: Regularly inspect the pool shell for any signs of damage or cracks, especially before and after the winter season.

Tip: Schedule professional inspections to catch potential issues early.

2. Monitor Water Chemistry: Even during the winter, it’s important to occasionally check the water chemistry to prevent any imbalances that could affect the pool structure.

Tip: Maintaining balanced water chemistry year-round helps prevent long-term damage to the pool shell.

3. Professional Winterization: If you’re unsure about the winterization process, consider hiring a professional to ensure your pool is properly prepared for winter.

Tip: Professional winterization services provide peace of mind and protection against damage. Contact Calm Water Pools if you have questions specific to winterizing a fiberglass pool shell.

Benefits of Proper Winter Care

1. Longevity: Proper winter care extends the life of your fiberglass pool, ensuring it remains in excellent condition for many years.

Tip: Investing in proper winter care now saves money on potential repairs down the road.

2. Aesthetic Maintenance: Preventing cracks and other damage helps maintain the pool’s aesthetic appeal, ensuring it looks great season after season.

Tip: Maintaining the gelcoat surface preserves its glossy finish and extends the pool’s lifespan.

3. Cost Savings: Preventing winter damage avoids costly repairs and replacements, making it a smart investment in the long run.

Tip: Proper winterization protects your investment and ensures many seasons of enjoyment.

Winterizing Supplies

Most pool supply stores carry high-quality winterization products. Investing in the right supplies ensures your pool is well-protected during the cold months. If you’re currently shopping for a new pool, browse our fiberglass pool shell catalog and ask about recommended winterizing kits for your model.

Conclusion

While fiberglass pools are designed to withstand a variety of conditions, they can be susceptible to winter damage if not properly maintained. By following proper winterization steps and investing in high-quality supplies, you can prevent cracking and enjoy your pool for many years to come.

Ready to explore your pool options? Request a quote or contact Calm Water Pools to get started. Financing options are also available to help make your dream pool a reality.