Year-End Pool Maintenance Checklist: Preparing Your Pool for the Winter Season


As the year draws to a close and colder weather sets in, pool owners must take the necessary steps to ensure their swimming pools, especially fiberglass models, are well-prepared for the winter. Neglecting to properly winterize your pool can lead to significant damage and costly repairs. This comprehensive year-end maintenance checklist will help you protect your investment and make spring opening much smoother.

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Fiberglass Pool Shells For Sale
and learn whether a DIY or professional approach is right for you.

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DIY Fiberglass Pool Shells
and this detailed guide on
How to Install a Fiberglass Pool Shell.

Balance the Water Chemistry


Before closing your pool, it’s crucial to balance the water chemistry about a week before you plan to shut it down. This includes adjusting the pH levels to between 7.2 and 7.6, alkalinity between 80 and 120 ppm, and calcium hardness around 180 to 220 ppm. Proper water chemistry prevents corrosion and scale buildup, which are critical concerns for fiberglass pools.

Thoroughly Clean the Pool


Remove any leaves, dirt, and debris from the water. Scrub the sides and bottom of your fiberglass pool to prevent algae buildup and staining. Ensure your pool’s filter system is also cleaned and free from debris to maintain proper function throughout the winter.

Lower the Water Level


For fiberglass pools, lowering the water level is generally recommended to just below the skimmer. This helps protect the skimmer and plumbing from freezing and potential damage. Consult your pool manufacturer’s guidelines for specific recommendations related to your pool model.

Add Winterizing Chemicals


Use a winterizing chemical kit suited for fiberglass pools to help keep the water clean and clear throughout the off-season. These kits typically include algaecide and a slow-releasing sanitizer to prevent algae growth and maintain water quality.

Protect Your Equipment


Drain all water from your pool pumps, heater, filters, and plumbing. Any water left in the equipment can freeze and cause cracking or other damage. After draining, store detachable equipment indoors to protect it from the elements.

Cover Your Pool


Invest in a high-quality pool cover specifically designed for fiberglass pools. Choosing the right
Inground Pool Winter Safety Covers
helps prevent debris buildup, improves safety, and protects your pool throughout the colder months.

Inspect and Repair


End the season by inspecting your pool for any signs of damage or wear, such as cracks, leaks, or surface degradation. Addressing these issues before the winter can prevent further damage due to freezing temperatures and moisture.

Professional Inspection


If you’re unsure about any steps in the maintenance process or want to ensure your pool is as protected as possible, consider working with experts who offer
Full-Service Pool Installation
and professional inspections to safeguard your investment.


By following this year-end pool maintenance checklist, you’re not only extending the life of your pool but also making your life easier when it’s time to reopen your pool in the spring. Remember, taking the time to properly close your pool will save you time, money, and effort when warmer days return.