How Does A Pool Cover Work?

20 minutes read

A pool cover is a protective barrier that is placed over the surface of a swimming pool when it is not in use. It serves several important purposes, including reducing evaporation, preventing debris from entering the pool, maintaining water temperature, and enhancing safety.


Pool covers are typically made of durable materials such as vinyl, mesh, or solid plastic. They come in various sizes and shapes to fit different pool designs. These covers are either manually placed over the pool or can be automatically operated through a motorized system.


When a pool cover is in use, it acts as a barrier that obstructs any external elements from entering the pool. This includes leaves, twigs, insects, dirt, and other debris that can accumulate in the water. This not only helps in maintaining a clean pool but also reduces the need for frequent cleaning and maintenance.


One of the most significant benefits of using a pool cover is its ability to minimize evaporation. Water surfaces tend to lose a substantial amount of moisture through evaporation, leading to water loss and increased chemical consumption. However, a pool cover effectively blocks evaporation, reducing water loss and conserving energy and resources.


In addition, pool covers also help in maintaining the water temperature. They act as an insulator, preventing heat loss through evaporation and radiation. This can significantly reduce the need for pool heaters, especially during colder months, thus saving energy and reducing costs.


Furthermore, a pool cover enhances safety, particularly for households with children or pets. It creates a strong barrier that prevents accidental slips or falls into the water, reducing the risk of drowning or other accidents. However, it is important to note that pool covers should never substitute proper supervision and safety precautions around swimming pools.


Overall, a pool cover is a valuable addition to any swimming pool as it offers multiple benefits. It helps in keeping the pool clean, reducing evaporation and heat loss, conserving resources, and enhancing safety. With proper installation and maintenance, a pool cover can be an effective and efficient solution to protect and preserve your pool.

Best Pool Covers of 2024

1
Blue Wave BWC752 Bronze 8-Year 20-ft x 40-ft Rectangular In Ground Pool Winter Cover,Dark Navy Blue

Rating is 5 out of 5

Blue Wave BWC752 Bronze 8-Year 20-ft x 40-ft Rectangular In Ground Pool Winter Cover,Dark Navy Blue

  • PROTECTS YOUR POOL - Blue Wave Winter Covers are perfect for regions that have winter weather. Designed to endure repeated exposure to harsh conditions, these covers provide protection for your in-ground swimming pool.
  • EASY TO SECURE – Integrated loops are spaced every four feet to secure water tubes (not included). The cover also features reinforced corner grommets to ensure your pool remains protected.
  • STRENGTH AND DURABILITY - Crafted from woven, laminated polyethylene strands, every Blue Wave winter cover is treated to protect it from sunlight degradation. For additional protection, each cover has a black underside.
  • REDUCES SPRING MAINTENANCE - This solid cover with heat-sealed seams keeps dirt, leaves, and branches from decaying in your pool all winter, ensuring the water will be ready for another season of fun in the spring.
  • 8-YEAR WARRANTY - Your winter cover comes with an 8-year pro-rated warranty. The first year is warranted for a full replacement on defects and material degradation.
  • Pool size: 20 feet x 40 feet
  • Cover size: 25 feet x 45 feet
  • Number of 8-Feet water tubes needed: 16
  • Integral cover loops to secure water tubes
  • 5 foot overlap to ensure there is no stretching or ripping
2
Winter Block Winter Pool Cover for Above Ground Pools, 24’ Ft., Round Winter Aboveground Pool Cover, 8-Year Warranty, Includes Winch and Cable, Superior Strength & Durability, UV Protected

Rating is 4.9 out of 5

Winter Block Winter Pool Cover for Above Ground Pools, 24’ Ft., Round Winter Aboveground Pool Cover, 8-Year Warranty, Includes Winch and Cable, Superior Strength & Durability, UV Protected

  • WINTER POOL COVER – The Winter Block Winter Pool Cover is great for keeping your aboveground pool in good condition during the cold winter months and makes it easier for you to get the pool back in shape in the spring
  • EASY TO INSTALL – This lightweight, yet durable winterizing pool cover is easy to install It comes with perimeter grommets, steel cable and winch so it’s ready for installation right out of the box
  • DURABLE CONSTRUCTION - This aboveground pool winter cover is treated for resistance to damaging sunrays It’s made of laminated polyethylene sheeting woven with thick, high-density polyethylene stitching for superior tensile strength & durability
  • KEEPS OUT DEBRIS – Designed to keep out debris, rainwater and melted snow, you can rest assured that next summer your pool will be ready for another season of family fun! This pool cover is extremely durable to withstand even the harshest winters
  • FITS 24’ ROUND POOL – This Winter Block Winter Pool Cover measures 27’ in diameter to fit a 24’ round pool without any issues
3
Blue Wave BWC704 Bronze 8-Year 18-ft Round Above Ground Pool Winter Cover,Dark Navy Blue

Rating is 4.8 out of 5

Blue Wave BWC704 Bronze 8-Year 18-ft Round Above Ground Pool Winter Cover,Dark Navy Blue

  • PROTECTS YOUR POOL - Blue Wave Winter Covers are perfect for regions that have winter weather. Designed to endure repeated exposure to harsh conditions, these covers provide protection for your above-ground swimming pool.
  • EASY TO SECURE - A vinyl-coated cable and a metal winch keep your pool cover secured tightly and efficiently. The cover features metal grommets spaced every 2-feet to ensure your pool remains protected.
  • STRENGTH AND DURABILITY - Crafted from woven, laminated polyethylene strands, every Blue Wave winter cover is treated to protect it from sunlight degradation. For additional protection, each cover has a black underside.
  • REDUCES SPRING MAINTENANCE - This solid cover with heat-sealed seams keeps dirt, leaves, and branches from decaying in your pool all winter, ensuring the water will be ready for another season of fun in the spring.
4
INTEX 28016E Solar Pool Cover: For 18ft Rectangular Frame Pools – Insulates Pool Water – Reduces Water Evaporation and Chemical Consumption – Keeps Debris Out

Rating is 4.7 out of 5

INTEX 28016E Solar Pool Cover: For 18ft Rectangular Frame Pools – Insulates Pool Water – Reduces Water Evaporation and Chemical Consumption – Keeps Debris Out

  • Helps keep pool water warmer
  • Comes with carrying bag
  • Durable 160 micron material
  • Note: This pool cover is made to FIT a 17'8" x 8'4" Feet rectangular pool
5
Robelle 361224 Pool Cover for Winter, Economy, 12 x 24 ft Above Ground Pools

Rating is 4.6 out of 5

Robelle 361224 Pool Cover for Winter, Economy, 12 x 24 ft Above Ground Pools

  • Winter pool cover to be used with traditional above ground swimming pools - Solid material will not let water pass through
  • Pool Size: 12 x 24 Foot Oval - Cover Size: 15 x 27 Feet (includes overlap in total)
  • 7 x 7 scrim - Polyethylene weighs 2.2 oz./yd2 - 3 foot overlap (Includes 3 feet of extra material beyond pool size, included in cover size above)
  • Cover should be able to float loosely on the water, consider going up a pool size if you have large top rails - Ice equalizer pillow sold separately
6
Robelle 351625-4 Pool Cover for Winter, Super, 16 x 25 ft Above Ground Pools

Rating is 4.5 out of 5

Robelle 351625-4 Pool Cover for Winter, Super, 16 x 25 ft Above Ground Pools

  • Winter pool cover to be used with traditional above ground swimming pools
  • Solid material will not let water pass through
  • Pool Size: 16 x 25 Foot Oval - Cover Size: 20 x 29 Feet (includes overlap in total)
  • Heavy-duty 8 x 8 scrim
  • Heavy-duty polyethylene weighs 2.36 oz./yd2
  • 4 foot overlap (Includes 4 feet of extra material beyond pool size, making this cover easier to install, included in cover size above)
  • Includes winch and cable, which should be used to secure the cover through the grommets
  • 10 Year Warranty
  • Cover should be able to float loosely on the water, consider going up a pool size if you have large top rails
  • Ice equalizer pillow sold separately
7
In The Swim 24 Foot Round Pool Value Winter Cover for Above Ground Pools

Rating is 4.4 out of 5

In The Swim 24 Foot Round Pool Value Winter Cover for Above Ground Pools

  • Solid round pool cover features 8 x 8 scrim
  • Cover dimensions: 27' in diameter, to fit round pools measuring: 24' in diameter
  • Made of laminated polyethylene sheeting woven with, high-density polyethylene stitching
  • Includes Cable and Turnbuckle
8
Swimline 24 Ft Round Above Ground Winter Pool Cover w/ 4'x8' Closing Air Pillow

Rating is 4.3 out of 5

Swimline 24 Ft Round Above Ground Winter Pool Cover w/ 4'x8' Closing Air Pillow

  • 3-4 Foot Overlap (cover size is 3-4 ft larger than pool size)
  • Closing Air Pillow is 4'x 8', 9 Gauge
  • Pushes your pool cover up off the water's surface so the water won't freeze to your pool cover
  • 30 Day Warranty Against Factory Defects. Warranty does not cover tears, rips, or holes


How do pool covers enhance pool safety?

Pool covers enhance pool safety in several ways:

  1. Preventing accidental drownings: A pool cover acts as a physical barrier that can prevent children or pets from accidentally falling into the water. It creates a layer of protection that can significantly reduce the risk of drowning incidents, especially when the pool is unattended.
  2. Restricting access: Many pool covers are designed to be strong and durable, making it difficult for unauthorized individuals to access the pool without removing the cover. This helps prevent unauthorized use of the pool and minimizes the risk of accidents or injuries.
  3. Supporting weight: Pool covers are typically able to support the weight of a person, adding an extra layer of protection in case someone accidentally walks or falls onto the cover. However, it is important to note that pool covers have weight limits, and it is not advisable to intentionally walk or play on them.
  4. Reducing water hazards: In addition to providing a physical barrier, pool covers can also help prevent accidents related to water hazards. They can keep the water free from debris, leaves, or insects, making it easier to see and maneuver around the pool area without slipping or falling.
  5. Alarming systems: Some pool covers come with built-in alarms that can detect any movement on the cover's surface. If someone tries to tamper with or remove the cover, an alarm will sound, alerting the pool owner or responsible individuals about the potential danger.


It is important to note that while pool covers enhance safety, they should not replace other safety measures. Proper adult supervision, pool fences, and other safety equipment should still be in place to ensure a secure pool environment.


How does a pool cover help in winterizing a pool?

A pool cover helps in winterizing a pool by providing a barrier between the pool water and the external environment. Here are a few ways in which a pool cover helps during the winterization process:

  1. Preventing debris: A pool cover acts as a shield, preventing leaves, twigs, and other debris from falling into the pool. This reduces the need for regular cleaning and maintenance, and helps keep the pool water cleaner.
  2. Reducing evaporation: A pool cover significantly reduces water evaporation during the colder months. This not only helps in conserving water but also prevents the loss of pool chemicals, thereby saving money on chemical treatments.
  3. Minimizing algae growth: By blocking the sunlight, a pool cover inhibits the growth of algae. Algae thrive in sunlight, so covering the pool prevents their growth and reduces the need for extensive cleaning and algae treatments when spring arrives.
  4. Preventing freezing: In colder climates, a pool cover can help prevent the water from freezing. When water freezes, it expands and can cause damage to pool pipes, pumps, and other equipment. A pool cover helps retain some heat and protects the water from freezing.
  5. Maintaining pool temperature: A pool cover acts as an insulator, helping to retain the heat in the pool water. This can decrease heat loss, reduce energy consumption, and save on heating costs during the winter season.


Overall, a pool cover is an essential part of winterizing a pool as it protects and preserves the pool, reduces maintenance efforts, and ensures a smoother reopening when the warmer season approaches.


What are the benefits of using a pool cover?

There are several benefits of using a pool cover, including:

  1. Evaporation prevention: A pool cover can significantly reduce water evaporation from the pool. This helps conserve water and reduce the need for frequent pool refills.
  2. Energy savings: A pool cover acts as an insulation barrier, preventing heat loss from the pool. It can help reduce energy consumption by minimizing the need for pool heaters or chillers, thus saving on utility costs.
  3. Chemical reduction: A pool cover can inhibit the evaporation of pool chemicals, such as chlorine. This reduces the need for frequent chemical additives, resulting in cost savings and a more consistent chemical balance in the pool.
  4. Debris protection: A pool cover acts as a barrier against leaves, dirt, insects, and other debris that may enter the pool. This helps keep the pool cleaner, reducing the need for manual cleaning and minimizing filter clogging.
  5. Safety: In the case of a solid pool cover, it can provide an additional layer of safety by preventing accidental access to the pool water, especially for households with small children or pets.
  6. Heat retention: A pool cover can help trap and retain the heat gained from sunlight. This is particularly beneficial during colder periods, allowing the pool water to stay warmer and extending the swimming season.
  7. Reduced maintenance: With a pool cover, there is typically less maintenance needed to keep the pool in good condition. Less cleaning, fewer chemical adjustments, and reduced debris accumulation all contribute to lower maintenance requirements.
  8. Water temperature regulation: A pool cover can help regulate the water temperature by preventing excessive heat gain during hot weather or heat loss during colder periods, providing more comfortable swimming conditions.


Overall, using a pool cover offers various advantages, such as water conservation, energy savings, reduced chemical usage, improved cleanliness, increased safety, and lower maintenance requirements.


How do pool covers prevent debris from entering the pool?

Pool covers prevent debris from entering the pool through a few mechanisms:

  1. Solid pool covers: Solid pool covers are constructed from materials that don't allow anything to pass through them. They can be made from vinyl, PVC, or other durable materials. When properly fitted and installed, they create a barrier that prevents leaves, twigs, dirt, and other debris from entering the pool.
  2. Mesh pool covers: Mesh pool covers are designed with small holes that allow water to pass through while blocking larger debris. The holes are small enough to prevent leaves and larger debris from entering the pool while still allowing rainwater and melted snow to drain into the pool. Mesh covers are generally lighter than solid covers and are popular in areas where rain or snow accumulation is a concern.
  3. Automatic pool covers: Automatic pool covers are motorized covers that can be opened or closed with the push of a button. They use a solid fabric or vinyl material, effectively sealing the pool when not in use. These covers are designed to perfectly fit the pool shape and size, leaving no gaps for debris to enter.


In all these cases, the covers serve as a physical barrier that prevents materials from falling into the pool. However, it's important to note that small particles like dust or pollen may still enter the pool even with a cover, especially if there are strong winds or during maintenance activities such as removing the cover. Regular cleaning and maintenance are still necessary to keep the pool water clean and clear.


What is the importance of using a pool cover during pool parties?

Using a pool cover during pool parties is important for several reasons:

  1. Safety: A pool cover provides an added layer of safety by preventing accidental falls into the pool, especially when there are young children or non-swimmers around. It acts as a physical barrier, reducing the risk of drowning or injuries.
  2. Accident prevention: Pool covers can help prevent accidents that may occur during pool parties, such as slipping or tripping near the pool edge. By covering the pool when not in use, it eliminates the possibility of someone accidentally falling into the water.
  3. Energy conservation: Pool covers can help conserve energy and reduce heating costs. They act as insulation, preventing heat loss through evaporation and keeping the pool water warmer for a longer period. This is especially beneficial during pool parties held in cooler weather or at night.
  4. Water conservation: When the pool is covered, there is minimal evaporation, reducing water loss from the pool. This is particularly important in regions facing water shortages or areas where water conservation is encouraged.
  5. Reduced maintenance: A pool cover helps keep debris, leaves, and dirt out of the pool. This reduces the need for frequent cleaning and skimming before, during, and after a pool party, saving time and effort.
  6. Chemical preservation: By minimizing exposure to sunlight and air, a pool cover can help prevent the degradation of pool chemicals. This helps maintain the chemical balance in the pool, reducing the need for frequent chemical adjustments or shock treatments.


Overall, using a pool cover during pool parties ensures a safer environment, saves energy and water, minimizes maintenance, and helps preserve the pool's chemical balance.

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