Closing a swimming pool at the right time can make a big difference when it is time to open it again in spring. Close it too early, and the water may still be warm enough for algae to grow. Wait too long, and freezing temperatures can damage plumbing and pool equipment, leading to expensive repairs.
On October 1, our team completed a pool closing in West Windsor Township, NJ. The property had a large freeform in ground pool with an attached spa, masonry waterfall, masonry slide, in floor cleaning system, grotto, heater, heat pump, and a separate slide.
The pool was in excellent condition when we arrived. The water was clear, the pool area was well maintained, and the timing was right for winter preparation.
Because of the pool’s size, we used three complete SunGuard Winterizing Kits rather than the single kit commonly used for a standard residential pool.
Here is a closer look at the job, the steps involved in preparing the pool for winter, and why pool size matters when choosing the right amount of winterizing chemicals.
A Large Freeform Pool with Plenty of Features
The photos from this job show a beautiful freeform pool surrounded by stamped concrete and mature landscaping. The natural tones of the pool deck blend nicely with the greenery around the property.
Before closing, the water was a clear blue-green. This is what homeowners want to see at the end of the swimming season. Keeping a pool in good condition throughout the summer makes the closing process easier and helps prepare it for a better opening next year.
This pool also had several features that needed individual attention during winter preparation. The attached spa, waterfall, slides, grotto, and in-floor cleaning system all require proper preparation before freezing weather arrives.
Pools with multiple water features require more work than a standard pool. Each plumbing line and piece of equipment needs to be checked and prepared to help prevent water from freezing inside the system.
For homeowners in West Windsor Township and across Mercer County, a thorough closing is especially important when a pool has several features and a significant investment in outdoor living space.
Why We Closed This Pool on October
The pool was in excellent condition when we arrived, making it a good time to prepare it for winter.
In New Jersey, late September through mid-October is generally a suitable period for pool closing, depending on the weather and water temperature. Many pool professionals recommend closing when the water temperature falls to around 65 degrees Fahrenheit or lower.
Cooler water slows algae growth, allowing winterizing chemicals to remain effective for longer. This is one reason closing a pool at the right time matters.
If you close a pool in August while the water is still warm, algae can keep growing after you add winterizing chemicals. This can reduce the treatment’s effectiveness before the colder weather arrives.
Waiting too long also carries risks. Fall temperatures can drop quickly, and an unexpected freeze can damage the pool and its equipment if it hasn’t been properly winterized.
October 1 was a suitable date for this West Windsor pool. The swimming season was ending, the water was in good condition, and our team could prepare the pool for the colder months ahead.
Every pool is different, so it is best to consider water temperature and the local weather rather than relying on a fixed closing date.
If you are planning your own closing, our pool closing planning guide explains what to consider and when to start arranging your appointment.
Why This Pool Needed Three Winterizing Kits
One important detail from this job was the amount of winterizing chemicals required.
We used three complete SunGuard Winterizing Kits because of the pool’s size. A standard residential pool may need only one kit, but larger pools require a treatment suited to their actual water volume.
A winterizing kit can include products such as algaecide, enzyme treatment, and scale and stain protection. These products help maintain water quality and protect pool surfaces and equipment during the months when the pool is not in use.
However, the correct amount depends on the product instructions and the volume of water being treated.
For example, one kit intended for a pool holding 10,000 to 15,000 gallons may not be enough for a much larger pool. Adding the same amount of chemicals to a pool with substantially more water results in a lower concentration.
That is why it is important to calculate the pool’s water volume before deciding how much winterizing treatment to use.
The pool we closed in West Windsor measured more than 20 by 40 feet and had an attached spa. Its size and features meant that three kits were needed for the planned treatment.
Using the correct amount helps ensure that the chemicals are suited to the pool rather than relying on the same treatment for every property.
If you have a large pool, ask your pool service provider how they select the winterizing treatment and whether the amount is appropriate for your pool’s water volume.
Our pool closing chemicals guide explains the different types of winterizing products and their role in preparing a pool for the off-season.
How We Prepared the Pool for Winter
1. Removing Accessories and Cleaning the Pool
Before adding chemicals or installing the safety cover, we prepared the pool area and removed accessories that needed to come out for winter.
This pool had several features, so the preparation required more attention than a standard pool closing.
We skimmed the water to remove floating leaves and debris before moving on to the chemical treatment. Starting with clean water helps make the rest of the closing process more straightforward.
2. Adding the Winterizing Treatment
The water was already in excellent condition, so we focused on maintaining it through the winter.
We added three SunGuard Winterizing Kits according to the planned treatment, following the product instructions for the application sequence and circulation.
We ran the pump after adding the chemicals to help distribute the treatment throughout the pool.
Proper circulation is important, particularly for a large pool. The water needs enough time to move through the circulation system so the treatment distributes as intended before you cover the pool.
Closing with clean water and proper chemical balance gives the pool a strong start for next season.
You can learn more about preparing your water with our complete pool pH guide and total alkalinity guide.
3. Preparing the Pool Equipment and Water Lines
This was one of the most important parts of the job because the pool had several separate features.
We checked and prepared each plumbing line to help prevent water from freezing inside it during winter.
Attached spa
We prepared the spa plumbing separately from the main pool system. We cleared and properly plugged its supply and return lines.
Masonry waterfall
We cleared the waterfall supply line and plugged it at the appropriate point. Water left inside a line can freeze and cause damage during a New Jersey winter.
Masonry slide and separate slide
Both slides had their own supply plumbing. We prepared each line and confirmed it was clear before closing.
In floor cleaning system
We checked and cleared the individual cleaning circuits through the supply manifold. We then plugged the manifold for winter.
Grotto
We cleared the grotto supply line and plugged it at the return fitting as part of the closing.
Heater and heat pump
The pool had both a heater and a heat pump. Each unit has its own internal water passages, so we drained both through their designated drain points and checked them before winter.
Taking the time to prepare each feature reduces the risk of freeze damage and unexpected repair costs when the pool reopens.
4. Installing the Safety Cover
Once the closing work was complete, we installed the teal mesh safety cover across the pool.
We secured the cover to brass deck anchors installed in the stamped concrete surrounding the pool.
Because this pool has a freeform shape, the cover needed to follow the curves around the entire perimeter. This requires careful installation because the straps must be adjusted to keep the cover properly positioned and evenly tensioned.
A loose or unevenly fitted cover can shift in strong winds and allow leaves and other debris to collect underneath it.
We checked the cover around the pool to make sure it was properly positioned and secured.
A suitable safety cover is an important part of preparing a pool for winter. It keeps debris out and provides an extra layer of protection when the pool isn’t in use.
If you are considering a new cover or want to check whether your existing one is suitable, read our guide to choosing a pool safety cover. You can also learn about our pool safety cover installation service.
What West Windsor Homeowners Should Know Before Closing a Large Pool
If you own a large in-ground pool with several features, check a few things before your closing appointment.
Make Sure the Chemical Treatment Suits Your Pool
The amount of winterizing chemicals needed depends on the pool’s water volume and the product instructions.
A treatment suitable for a smaller pool may not be enough for a much larger one. Ask your service provider how they calculate the required amount and whether an attached spa is included.
Check Every Plumbing Line
Pools with waterfalls, slides, grottos, spas, and in-floor cleaning systems have more plumbing to prepare for winter.
Address each line individually. Don’t assume preparing the main pool equipment is enough to protect every feature.
Do Not Leave Closing Until the Last Minute
New Jersey weather can change quickly in fall. Booking early gives you a better chance of securing a suitable appointment before the schedule fills up.
If your pool has several features, let your service provider know in advance. A larger pool may take longer to close than a standard one.
Pay Attention to Water Temperature
Water temperature is a useful guide when deciding when to close. Cooler water slows algae growth and helps winterizing chemicals do their job.
At the same time, don’t wait until freezing weather is already a concern. Planning ahead helps you choose a suitable closing date without rushing.
Our pool closing service in West Windsor Township explains what is included and how we prepare pools of different sizes.
Pool Closing Services in West Windsor and Mercer County
At Desi Boys Pool Services, we help homeowners prepare their pools for winter and get them ready for the next swimming season.
Our services include pool opening, pool closing, weekly maintenance, safety cover installation, and equipment service throughout West Windsor Township and the surrounding Mercer County area.
This job shows why every pool closing needs to follow the property’s specific requirements. A large pool with several water features needs more attention than a standard pool, particularly when preparing the plumbing and selecting the winterizing treatment.
If you need help closing your pool in West Windsor, we can discuss your pool’s size, features, and the work required before winter arrives.
Call (609) 322 1655 or contact Desi Boys Pool Services online to arrange your pool closing.
You can also visit our pages for pool closing in West Windsor Township and pool closing across Mercer County for more information.
Frequently Asked Questions About Pool Closing in West Windsor, NJ
When should I close my pool in West Windsor, NJ?
Late September through mid October is a common period for pool closing in West Windsor. The right time depends on water temperature and the weather forecast. Many professionals recommend closing when the water temperature is around 65 degrees Fahrenheit or lower, as cooler water slows algae growth.
Read our guide to when to close your pool in New Jersey for more information.
Why did this pool need three winterizing kits?
This was a large freeform pool with an attached spa. It needed more winterizing treatment than a standard residential pool because of its water volume.
The correct number of kits depends on the pool’s actual water volume and the manufacturer’s dosing instructions. Using the right amount helps ensure the treatment is suitable for the pool.
What does a professional pool closing include?
A professional pool closing generally includes cleaning the pool, preparing the water chemistry, adding the appropriate winterizing treatment, preparing the plumbing and equipment for freezing temperatures, adjusting the water level when required, and installing the safety cover.
Pools with spas, waterfalls, slides, or other water features need extra attention because each feature may have separate plumbing that must be winterized.
Does closing time affect winterizing chemicals?
Yes. Water temperature can affect how quickly algae grows and how quickly some winterizing products are used up.
Closing when the water is cooler helps reduce algae growth during the off-season. Proper chemical treatment and pool preparation also help maintain water quality through winter.
How can I check whether my pool is receiving enough winterizing chemicals?
Ask your pool service provider which products they’ll use and how they calculate the required amount. Follow the product instructions and account for the pool’s water volume.
If your pool has an attached spa, ask whether the calculation includes its water volume or treats it separately.
Does Desi Boys Pool Services offer pool closing in West Windsor Township?
Yes. We provide pool closing services in West Windsor Township and surrounding communities, including Princeton, Robbinsville, East Windsor, Plainsboro, Pennington, Hopewell, and Hamilton Township.
Call (609) 322 1655 or visit our West Windsor pool closing service page to learn more.
