Whether you own an above-ground or in-ground pool, maintaining water quality and minimizing debris during off-seasons or extended periods of non-use is crucial. One of the most common and cost-effective solutions people consider is covering the pool with a tarp. But is it really okay to cover a pool with a tarp? This article dives deep into the pros and cons, compares various pool cover types, and offers practical advice to help pool owners make informed decisions.
Understanding the Purpose of Pool Covers
Before evaluating whether a tarp is appropriate, it’s important to understand the functions that pool covers serve. These include:
- Reducing evaporation and water loss
- Minimizing debris entry (leaves, dirt, insects)
- Blocking sunlight to inhibit algae growth
- Enhancing safety by acting as a barrier
- Conserving heat in heated pools
While traditional pool covers—especially solid safety covers and solar blankets—are designed specifically for pools, tarps are generic waterproof sheets typically used for covering vehicles, boats, or outdoor objects. The overlap in function leads many to wonder if a tarp can serve as a substitute.
Is It Okay to Cover a Pool with a Tarp?
Yes, it is okay to cover a pool with a tarp, but only under certain conditions and with proper precautions. A high-quality, UV-resistant, and appropriately sized tarp can effectively protect your pool during off-seasons or short-term closures. However, improper use of a tarp can result in damage, safety risks, or water chemistry problems.
When a Tarp Can Be a Good Choice
- Budget-friendly solution: Tarps are often much cheaper than custom-made pool covers.
- Temporary pool closure: For short-term use or during pool maintenance, a tarp can suffice.
- Drying up excess water: Tarps can help prevent additional rainwater from entering the pool while it’s being drained or cleaned.
When a Tarp Is Not Recommended
- Prolonged winterization: Tarps are not durable enough for long-term winter use compared to safety covers or mesh covers.
- Heavy debris areas: Unless reinforced, tarps may not support the weight of leaves, branches, or snow.
- Chemical imbalance risks: Tarps can trap moisture and heat, leading to mold or algae problems if not secured properly.
Types of Pool Covers and How They Differ from Tarps
While a tarp can be used in a pinch, investing in a proper pool cover offers better performance and longevity. Let’s compare different types of pool covers with standard tarps:
| Type of Cover | Purpose | Durability | Cost Range | Best For |
|---|---|---|---|---|
| Solid Safety Cover | Safety and winterization | Very high | $200–$1,000+ | Winter protection and child safety |
| Mesh Safety Cover | Winterization and water drainage | High | $250–$1,200 | Winter use with heavy rain or snow |
| Solar Cover | Heat retention and evaporation reduction | Moderate | $50–$200 | Seasonal use and energy saving |
| Winter Cover (Solid or Mesh) | Off-seasonal protection | Moderate to High | $80–$400 | Winter pool closing |
| Plastic Sheeting / Tarp | Temporary protection | Low to Moderate | $20–$150 | Short-term use or emergencies |
This table shows that while tarps are the most affordable, they fall short in durability and purpose-specific design compared to traditional pool covers.
How to Safely Use a Tarp to Cover Your Pool
If you choose to go the tarp route, here are some best practices to follow:
Choose the Right Type of Tarp
Not all tarps are created equal. When selecting a tarp for your pool, make sure it is:
- Made of high-density polyethylene (HDPE) for durability
- UV-resistant or treated to withstand long-term sun exposure
- Waterproof and reinforced with grommets for securing
- Oversized to allow for overlap around the pool edges
A tarp that is too thin may tear under stress, while a tarp made for industrial use might be too heavy and cumbersome.
Secure It Properly
A loosely draped tarp can become a hazard or easily blown away. Use the following methods to secure it effectively:
- Bungee cords or tie-down straps: Attach them to grommets and anchor points around the pool deck
- Pool cover reels: These allow for easier deployment and storage
- Water bags: Placing water-filled tubes across the tarp can help weigh it down
Ensure that the tarp is tight across the surface to avoid sagging, which can trap water and create mildew issues.
Use a Support Frame if Needed
For in-ground pools, especially in regions with heavy snowfall, consider installing a temporary support frame. This prevents the tarp from sagging into the water and accumulating debris or ice. Without support, a tarp may sink into the pool or cause damage to the liner if not removed in time.
Check for Punctures and Tear Points
Regularly inspect the tarp for any tears or weak spots. Even a small hole can allow contaminants to enter the pool. If damage is discovered early, it can be repaired with tape or a patch kit designed for outdoor tarps.
Repair Tips:
- Use UV-resistant patch kits to ensure long-term protection.
- Avoid using duct tape exclusively, as it may degrade after prolonged exposure to sunlight.
Keep the Pool Balanced Before Covering
Before placing a tarp over the pool, ensure the water is properly balanced (pH, alkalinity, calcium hardness) and that algaecide has been added. A poorly balanced pool under a tarp can become a breeding ground for algae and staining.
Additionally, use a pool cover safe to prevent chemicals from breaking down the tarp material.
Pros and Cons of Using a Tarp as a Pool Cover
To better understand the practicality of using a tarp, let’s break down the key advantages and disadvantages:
Pros of Using a Tarp
- Cost-effectiveness: Tarps are significantly cheaper than most specialized pool covers.
- Versatility: A tarp can be used in different environments and with different pool shapes.
- Easy to Handle: Most tarps are lightweight and do not require professional installation.
- Quick Setup: Unlike permanent covers, tarps can be deployed in a short time during emergencies or unexpected weather changes.
Cons of Using a Tarp
- Limited Lifespan: Tarps generally last only a season or two before tearing or degrading from sun exposure.
- Greater Maintenance: Tarps require more frequent inspection and manual securing compared to automatic covers.
- Potential for Damage: If not properly installed, a tarp may sag into the water and become costly to remove or repair.
- Lack of Safety Features: Standard tarps do not meet safety cover standards and cannot support weight, posing risks to children and pets.
Expert Tips for Maximizing Tarp Benefits
If you’re committed to using a tarp, here are some expert strategies to ensure optimal performance and pool protection:
Select the Right Size with Overlap
Make sure the tarp covers the entire pool and extends beyond the edge by at least 3 feet on all sides. This allows for better anchoring and prevents water runoff from seeping into the pool space.
Avoid Direct Contact with Water
Ideally, the tarp should hover slightly above the water line. Water pooling on top can add weight, causing the tarp to droop. A support frame or air pillow under the tarp can help maintain space.
Use a Ground Tarp or Liner Barrier
For those winterizing an above-ground pool with a tarp over the water surface, placing a smaller barrier tarp beneath the main cover can add an extra layer of protection to the pool liner from abrasion.
Drain Standing Water Regularly
Despite your best efforts, water may pool on top of the tarp. Use a pump or siphon tube regularly to remove standing water to prevent tearing and maintain efficiency.
Consider Combined Use with a Solar Blanket (for Smaller Pools)
For quick weekend closures or when you expect sunny weather, combining a tarp with a solar blanket can enhance insulation and UV protection without spending on premium solutions.
Safety Considerations When Using a Pool Tarp
While a tarp can protect your pool, safety must remain a top priority. Here are some critical safety concerns to keep in mind:
Not a Safety Cover by Legal Standards
Most municipal and national pool safety regulations require a certified safety cover if the pool is to be left open during non-use periods. These covers can support the weight of a child or pet. Tarps, on the other hand, cannot meet these criteria and do not offer fall-through protection.
Potential Trip Hazards
Loose or improperly secured tarps can pose tripping hazards to swimmers or visitors walking around the pool area.
Pooling Water May Attract Children or Animals
Water that gathers on the tarp might look like a puddle to a child or pet and could tempt them to approach or step on the cover, risking falls.
Chemical Accumulation Risk
If cleaning chemicals come into contact with the tarp and wear it down, toxic materials could leech into the water. Always ensure the tarp is clean and chemically inert.
When to Choose a Custom Pool Cover Instead
If your pool usage is consistent throughout the swimming season, or if you’re winterizing for the colder months, investing in a proper custom-made pool cover will provide better long-term value and peace of mind.
In-Ground Pools
For in-ground pools, a winter cover is essential to protect the structure from freezing temperatures, debris buildup, and water imbalance. These covers are usually made from durable vinyl or mesh and are secured using water tubes or anchors.
Family with Young Children or Pets
If you have children or pets, a solid safety cover with proper tensioning is strongly recommended. These covers are certified by ANSI and ASTM standards to hold weight and prevent accidents.
Pools in High Debris Areas
If you live in an area with a lot of trees, pollen, or windblown debris, a solid winter cover or safety cover will provide better protection against contamination and reduce cleaning time in the spring.
Heated Pools
For pools with a heater system, solar blankets are an ideal option—they help retain heat, reduce evaporation, and cut down energy costs.
Real-World Scenarios: When a Tarp Worked (and When It Didn’t)
Looking at user experiences helps bring practical insights into the question.
Successful Tarp Use Cases
User A from Kansas successfully used a 24 ft x 24 ft HDPE tarp to cover her above-ground pool for two winter seasons using water-filled pool bags and straps. The tarp held up well and saved her over $300 compared to buying a custom cover.
User B from Florida often uses a tarp during storm season to protect his pool from excess rain and debris while on vacation. He reinforces the tarp with bungees and a makeshift wooden frame, which has worked well for short-term use.
Failed Tarp Scenarios
User C from Colorado had a tarp torn by strong winds after improper anchoring. The tarp ended up in the pool, damaging the liner, and requiring costly repairs.
User D, in North Carolina, attempted to use a tarp for winter pool closing without considering snow load. The tarp sagged and collected water, leading to algae buildup and a challenging spring opening.
These examples underscore the importance of thoughtful installation and understanding regional weather conditions before relying on a tarp.
Final Word: Are Tarps Okay for Pool Covering?
In short, using a tarp to cover a pool is acceptable but situational. For temporary use, budget constraints, or short closures, a tarp can be a practical solution. However, for long-term, winter use or maximum safety and durability, investing in a purpose-built pool cover is a better idea.
Pool owners should evaluate their specific circumstances—climate, pool type, and duration of coverage—before choosing to use a tarp. Making an informed decision ensures both pool upkeep and user safety are not compromised.
Key Takeaways:
- Tarps are suitable for temporary use but lack durability and safety features over time.
- Proper installation and anchoring prevent water pooling and tearing.
- Custom pool covers provide better performance and compliance with safety regulations.
- For best results, combine a tarp with a support system and regular inspections.
No one-size-fits-all solution exists, but understanding the strengths and limitations of tarps versus other covers allows for tailored pool protection strategies that suit your unique needs.
Can I use any tarp to cover my pool?
While technically any tarp can physically cover a pool, not all tarps are suitable for this purpose. The best pool tarps are specifically designed for outdoor use, made from durable materials like polyethylene that are resistant to UV rays, tearing, and water. Using a general-purpose tarp might lead to rapid degradation, holes, and the risk of the tarp sinking into the pool or blowing away in strong winds. It’s essential to choose a tarp that is the right size for your pool and reinforced for durability.
For best results, opt for a tarp labeled for pool use or as a winter pool cover. These tarps often feature grommets for secure fastening and are available in mesh or solid options depending on whether you need to allow water to pass through or completely block debris. Investing in a quality tarp will save money in the long run by preventing damage and reducing maintenance efforts.
What are the benefits of covering a pool with a tarp?
Covering a pool with a tarp provides several benefits, primarily keeping debris like leaves, dirt, and insects out of the water. This reduces the need for frequent cleaning and helps maintain water chemistry balance. A tarp can also prevent evaporation, which conserves water and retains pool chemicals, thereby lowering operational costs. In the case of solid tarps, they can serve as solar covers, absorbing heat to help warm the water, making the pool more comfortable for swimmers.
Additionally, covers help retain heat overnight or when the pool is not in use, which can be especially valuable in cooler climates. Safety is another consideration, as properly secured tarps can prevent accidental falls into the water when the pool is unused for extended periods. Overall, using a tarp is a practical solution for extending the usability of a pool while lowering maintenance, energy, and cleaning costs.
Are pool tarps safe for use with children and pets?
When properly installed, pool tarps can be a safe option for homes with children or pets, acting as a barrier that prevents accidental falls into the pool. However, this depends heavily on the type of tarp and how securely it’s fastened. Safety pool covers—often mesh covers with a tight weave and reinforced edges—are designed specifically for this purpose and are typically installed with a bracket system that ensures a snug fit and weight-bearing strength.
Standard tarps without secure fastening systems or the proper weight rating may sag, tear, or become hazards if someone steps on them. For maximum safety, choose a cover that meets ASTM safety standards for pool covers, and make sure the installation includes proper tensioning methods and edge restraints. Always supervise young children around any covered pool and check the tarp regularly for wear or damage.
How do I secure a tarp over my pool properly?
Properly securing a tarp over your pool is crucial to prevent it from shifting, blowing away, or allowing water to pool on top. The most effective method uses a combination of a tarp cover, water bags, and a sturdy support system. Water-filled bags placed along the edges of the tarp help hold it in place, create tension, and prevent sagging. For inground pools, you may also use a cable and winch system that tightens the tarp across the pool surface, ensuring a snug fit.
Additionally, grommets should be placed around the perimeter of the tarp to allow connection points for tie-downs or fasteners. For above-ground pools, securing the tarp around the top rails or using specially designed cover clips can offer enhanced stability. Always ensure the tarp is evenly spread and there’s no slack that would allow debris or water to collect. Regular inspections during windy or rainy conditions are crucial to maintaining effectiveness.
Can a tarp damage my pool if used incorrectly?
Yes, using a tarp incorrectly can lead to damage to your pool. A common issue is water accumulation on top of a solid tarp, which can cause sagging, stretching, or even tearing the cover, potentially leading to water spilling into the pool. This added weight may also wear down the pool walls or liner, especially in above-ground pools. Improper tensioning or anchoring can allow the tarp to flap in the wind, leading to wear and abrasion around edges and rails.
Additionally, leaving a low-quality, non-reinforced tarp on the pool for extended periods without supervision can lead to mildew growth, discoloration, and algae formation due to poor circulation. Using inappropriate fasteners like sharp objects to tie down the tarp can also puncture the cover, reducing its effectiveness and lifespan. To avoid damage, always follow the manufacturer’s instructions and invest in a reputable, properly sized tarp designed for pool use.
How do I choose the right tarp size for my pool?
Selecting the right tarp size is essential for ensuring a secure and effective pool cover. Begin by measuring your pool’s length and width carefully to determine the minimum dimensions the tarp should cover. It’s important to choose a tarp that is slightly larger—typically 1 to 2 feet extra on all sides—to allow for secure fastening and prevent wind from lifting the edges. Custom-cut tarps are available for uniquely shaped pools, ensuring a snug fit.
Many manufacturers offer common tarp sizes such as 12’x24’, 16’x32’, or 20’x40’, which work well for standard rectangular or oval pools. If unsure, it’s better to get a tarp slightly larger than your pool and adjust it with the securing system rather than risk gaps at the edges. A perfectly sized tarp will lie flat, remain firm under fastening systems, and be easier to manage when removing or reinstalling.
What is the lifespan of a quality pool tarp?
A high-quality pool tarp typically lasts anywhere from 5 to 10 years, depending on the material, frequency of use, weather exposure, and maintenance. Tarps made from durable, UV-resistant polyethylene with reinforced stitching and grommets generally offer the longest lifespan. However, factors such as harsh sun exposure, snow, rain, strong winds, and improper storage can reduce the tarp’s effectiveness and longevity.
To extend the life of your tarp, always store it clean and dry during off-seasons and avoid leaving it exposed longer than necessary. Use proper fastening methods to minimize wind stress, and inspect the tarp regularly for signs of wear like tears or grommet looseness. By practicing regular maintenance and following the manufacturer’s care guidelines, you can ensure your tarp remains a valuable investment for several seasons.