TL;DR: Seven enemies threaten winter pool covers: excessive snow weight (remove over 2 to 3 inches), standing water (use cover pump), sharp objects (inspect and remove), high winds (secure properly), UV rays (use quality cover), animals and pests (deter with repellents), and improper installation (follow instructions). Cover damage costs $200 to $1,000 to replace versus $50 to $200 for prevention. Regular monitoring and maintenance protect covers lasting 5 to 10 years. Quality covers with proper care provide reliable winter protection season after season.
SEO Summary: Complete 2026 guide to 7 winter pool cover enemies covering snow accumulation damage, standing water problems, sharp object punctures, wind damage, UV degradation, animal damage, and installation errors. Expert advice on prevention strategies, damage identification, repair methods, maintenance schedules, and protective accessories for extending cover lifespan and ensuring reliable winter pool protection.
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Table of Contents
Enemy 1: Excessive Snow Accumulation
Excessive snow accumulation is one of the most dangerous threats to winter pool covers. Snow is deceptively heavy, with wet snow weighing 12 to 20 pounds per cubic foot and dry snow weighing 5 to 10 pounds per cubic foot. A few inches of snow across a large pool cover can add hundreds or even thousands of pounds of weight. This excessive weight stresses the cover material, stretches seams, and can cause catastrophic failure.
Most pool covers are rated to support specific snow loads, typically 20 to 40 pounds per square foot. However, this rating assumes even weight distribution and proper cover installation. In reality, snow often accumulates unevenly, creating stress concentration points. The center of the cover, where snow naturally accumulates deepest, bears the most weight. This can cause the cover to sag into the pool, potentially tearing or allowing the cover to touch the water surface.
How Snow Damages Covers
When snow accumulates excessively, several types of damage can occur. The weight can tear the cover material, particularly at seams or weak points. Stitching can fail under stress, causing seams to separate. Grommets can tear out, rendering the cover impossible to secure properly. The cover can stretch permanently, losing its shape and fit. In extreme cases, the entire cover can collapse into the pool, requiring complete replacement.
Snow accumulation also creates secondary problems. As snow melts and refreezes, it forms ice layers that are even heavier than snow. Ice can create sharp edges that cut or abrade the cover material. Melting snow creates standing water on the cover, which adds more weight and creates additional problems discussed in the next section. The freeze thaw cycle weakens cover material over time, reducing its lifespan.
Prevention and Removal
Monitor snow accumulation throughout winter and remove snow when it exceeds 2 to 3 inches. Use a soft broom, foam snow rake, or leaf blower to remove snow gently. Work from the edges toward the center, being careful not to damage the cover material. Never use metal shovels, sharp tools, or excessive force, as these can puncture or tear the cover.
For above ground pools, snow removal is particularly critical because the cover is more exposed and vulnerable. Remove snow promptly after each snowfall rather than allowing it to accumulate over multiple storms. For inground pools with solid covers, ensure your cover pump is operating to remove melt water as you clear snow. This prevents water from accumulating and adding to the weight problem.
The Swimline Deluxe 28 Foot Round Pool Solid Winter Cover features heavy duty construction rated for significant snow loads with 10 year warranty.
Enemy 2: Standing Water on Cover Surface
Standing water on pool covers creates multiple problems that can damage the cover and compromise pool protection. Water is heavy, weighing approximately 8.3 pounds per gallon. Even a few inches of water across a pool cover adds significant weight. A 20 by 40 foot cover with 3 inches of standing water holds approximately 1,500 gallons, weighing over 12,000 pounds. This weight stresses the cover material and can cause sagging, stretching, or tearing.
Standing water also promotes algae growth on the cover surface. Algae makes the cover slippery and can stain the material. Water seeping under the cover edges dilutes winterizing chemicals in the pool, reducing their effectiveness. This can lead to algae growth in the pool itself, resulting in green water at spring opening. Standing water also attracts mosquitoes and other insects, creating a nuisance and potential health hazard.
The HydroTools by Swimline 500 Gallon Per Hour Submersible Electric Pool Cover Pump automatically removes standing water preventing weight damage and algae growth.
How Standing Water Damages Covers
Water accumulation causes the cover to sag into the pool. This sagging creates a bowl shape that collects even more water, worsening the problem. The weight of accumulated water can tear the cover material or cause seams to fail. Grommets and attachment points experience excessive stress and can tear out. The cover can stretch permanently, losing its proper fit and shape.
Standing water also accelerates cover deterioration. Constant moisture exposure promotes mildew and mold growth, which weakens cover material. Chemicals in the water, particularly chlorine from pool water that seeps onto the cover, can bleach or degrade the material. Freeze thaw cycles in standing water create ice that expands and contracts, stressing the cover material and accelerating wear.
Prevention and Removal
For solid covers, install a quality cover pump and ensure it operates throughout winter. Place the pump at the lowest point of the cover where water naturally accumulates. Check the pump weekly during winter and after every rain or snow melt event. Clean the pump intake screen regularly to prevent clogging. Ensure the discharge hose is not frozen or blocked.
For mesh covers, standing water should drain through automatically. If water accumulates on a mesh cover, this indicates the mesh is clogged with debris or the cover is sagging excessively. Clean the mesh surface and adjust cover tension to eliminate sagging. Consider using an air pillow under the cover to create a peak that sheds water and prevents accumulation.
The HydroTools by Swimline Pool Air Pillow for Pool Covers creates a peak under covers preventing water accumulation and ice damage.
Enemy 3: Sharp Objects and Debris
Sharp objects and debris pose a constant threat to pool covers throughout winter. Falling branches, blown debris, tools left near the pool, and even ice can puncture or tear cover material. A single puncture compromises the cover's ability to keep debris out and can expand into a large tear if not repaired promptly. Sharp objects also create stress concentration points that can lead to larger failures.
Common sharp objects that damage covers include tree branches, especially those with sharp broken ends. Pine cones and seed pods can have sharp points that puncture covers. Lawn furniture, grills, or tools blown onto the cover by wind can tear the material. Ice formations, particularly icicles falling from nearby structures, can puncture covers. Even pet claws can damage covers if animals walk on them.
How Sharp Objects Damage Covers
Sharp objects create punctures, tears, or cuts in cover material. Small punctures may seem insignificant but can expand rapidly, especially under stress from snow or water weight. Tears compromise the cover's structural integrity, creating weak points that fail under load. Damaged areas allow debris, sunlight, and precipitation into the pool, defeating the purpose of the cover.
Sharp debris left on the cover can also abrade the material as wind moves it around. This abrasion thins the cover material, creating weak spots that eventually fail. Branches resting on the cover can trap moisture underneath, promoting mildew and accelerating material degradation. Heavy branches can create permanent indentations or stretch the cover material.
Prevention and Protection
Inspect the area around your pool before installing the winter cover. Trim overhanging tree branches that could fall onto the cover. Remove or secure any objects near the pool that could blow onto the cover. Create a clear zone around the pool perimeter free of potential hazards. Consider installing a mesh safety fence around the pool to keep large debris and animals away from the cover.
Check your cover monthly during winter for debris accumulation. Remove branches, leaves, and other objects promptly using a soft broom or leaf blower. Inspect the cover for any punctures or tears. Repair small damage immediately before it expands. Keep a cover repair kit on hand for quick repairs.
The Hinspergers Universal Solid Swimming Pool Safety Cover Patch Kit provides everything needed for quick cover repairs preventing small damage from expanding.
Enemy 4: High Winds and Improper Securing
High winds are a serious threat to pool covers, particularly if the cover is not properly secured. Wind can work under an unsecured cover, lifting it and potentially tearing it completely off the pool. Even secured covers can suffer damage from sustained high winds. Wind creates a pumping action that stresses attachment points, potentially tearing out grommets or breaking straps. Covers flapping in wind can abrade against pool edges or deck surfaces, causing wear and damage.
Wind damage often occurs during storms when pool owners cannot immediately respond. A cover that seems secure in calm conditions may fail during a severe windstorm. Wind can also blow debris onto the cover, creating the sharp object hazards discussed previously. In extreme cases, wind can blow the entire cover into the pool or carry it away completely, leaving the pool unprotected for the remainder of winter.
The Swimline Winter Pool Cover Blocks 6 Pack provides heavy duty cover weighting resistant to wind lift and shifting.
How Wind Damages Covers
Wind creates several types of cover damage. The most obvious is complete cover removal, where wind lifts and carries away an improperly secured cover. More commonly, wind causes partial lifting that stresses attachment points. Grommets can tear out, straps can break, and water bags or cover blocks can shift or roll. The cover material itself can tear at stress points, particularly where it attaches to securing devices.
Wind also causes abrasion damage. A cover flapping in wind rubs against pool coping, deck edges, or other surfaces. This abrasion wears through the cover material over time, creating thin spots that eventually fail. Wind driven debris impacts the cover at high velocity, potentially puncturing or tearing the material. The constant stress of wind loading fatigues the cover material, reducing its lifespan.
Prevention and Securing
Proper cover installation is the primary defense against wind damage. Use adequate securing devices spaced appropriately around the pool perimeter. For inground pools, use sufficient water bags or cover blocks, spacing them every 3 to 4 feet with no gaps. Overlap bag or block ends slightly to ensure continuous coverage. For above ground pools, use cover clips or cable and winch systems to secure the cover tightly to the pool structure.
The Doheny's Swimming Pool Above Ground Winter Cover Clips 24 Pack securely attaches covers to pool rails preventing wind lift and damage.
The Winter Pool Cover Seal for Above Ground Pools prevents wind from getting under cover edges for complete protection.
Inspect cover security monthly during winter and after major wind events. Check that all securing devices remain in position and are functioning properly. Tighten any loose straps or cables. Replace any damaged water bags or cover blocks. Add additional securing devices in areas where the cover seems loose or prone to wind lift. Consider installing a windbreak, such as a fence or hedge, on the windward side of the pool to reduce wind exposure.
Enemy 5: UV Rays and Sun Damage
UV rays from sunlight gradually degrade pool cover materials, even during winter. While UV exposure is less intense in winter than summer, covers remain exposed for months, accumulating significant UV damage. UV radiation breaks down the polymer chains in vinyl and fabric materials, causing them to become brittle, fade, and lose strength. This degradation is cumulative and irreversible, eventually requiring cover replacement.
UV damage manifests in several ways. The cover material becomes stiff and brittle, losing its flexibility. Colors fade, with dark covers becoming lighter and lighter covers becoming chalky or yellowed. The material develops a rough, degraded surface texture. Small cracks appear, particularly along fold lines or stress points. Eventually, the material becomes so weakened that it tears easily under normal stress.
How UV Rays Damage Covers
UV radiation attacks the chemical bonds in cover materials. In vinyl covers, UV breaks down plasticizers that keep the material flexible. As plasticizers degrade, the vinyl becomes rigid and brittle. In fabric covers, UV weakens the fibers themselves, reducing tensile strength. Stitching thread also degrades from UV exposure, causing seams to fail even when the cover material remains intact.
The rate of UV damage depends on several factors. Geographic location affects UV intensity, with southern locations experiencing more intense UV exposure. Cover color matters, with darker colors absorbing more UV energy and degrading faster. Cover quality is critical, as premium covers include UV inhibitors that slow degradation. Covers stored improperly during summer, particularly in direct sunlight, suffer accelerated UV damage.
Prevention and Protection
Choose quality pool covers with UV inhibitors built into the material. These inhibitors absorb or reflect UV radiation, significantly extending cover lifespan. Premium covers typically last 5 to 10 years, while budget covers without UV protection may last only 2 to 3 years. The higher initial cost of quality covers is offset by their extended lifespan.
Store covers properly during the off season. Clean and dry the cover thoroughly before storage. Store in a cool, dry location away from direct sunlight. A garage, basement, or shed provides ideal storage conditions. Avoid storing covers in hot attics or outdoor sheds where temperatures can accelerate degradation. Use a storage bag or container to protect the cover from dust, pests, and incidental UV exposure.
The GLB Pool Cover Care Pool Cover Cleaner removes dirt and contaminants extending cover life and maintaining UV protection.
Consider using a cover protector product that adds UV protection to existing covers. These products are applied to the cover surface and provide an additional layer of UV defense. While not as effective as built in UV inhibitors, they can extend the life of aging covers. Reapply protector products annually for best results.
Enemy 6: Animals and Pests
Animals and pests can cause surprising amounts of damage to pool covers. Larger animals like deer, raccoons, or dogs can walk on covers, potentially falling through or tearing the material with their weight and claws. Smaller animals like squirrels, chipmunks, or rats can chew through cover material, creating holes. Birds can peck at covers or leave droppings that stain and degrade the material. Even insects can cause problems, with some species chewing small holes in covers.
The most common animal related damage comes from pets, particularly dogs. Dogs may walk onto pool covers, not realizing they are not solid surfaces. Their weight can cause the cover to sag or tear. Dog claws can puncture or scratch cover material. Cats can also damage covers with their claws, though their lighter weight makes them less likely to cause structural damage.
How Animals Damage Covers
Large animals create damage through their weight and claws. A deer walking across a pool cover can tear the material or cause it to sag into the pool. Raccoons searching for food can tear covers with their sharp claws. Dogs playing near the pool can jump onto the cover, potentially falling through or creating tears. The sudden impact of an animal landing on a cover can tear the material even if the animal's static weight would not.
Small animals cause damage by chewing. Rodents chew through cover material to access the pool area, which may provide shelter or water. Squirrels and chipmunks can create surprisingly large holes. Mice and rats can chew through cover edges or seams. Once a small hole exists, it can expand rapidly from weather stress, eventually requiring cover replacement.
Birds cause damage through pecking and droppings. Some birds peck at covers, possibly mistaking them for food or nesting material. Bird droppings are acidic and can stain or degrade cover material over time. Large accumulations of droppings can also add weight and create unsightly messes that are difficult to clean.
Prevention and Deterrence
Install physical barriers to keep animals away from the pool cover. A temporary fence around the pool perimeter prevents most large animals from accessing the cover. For pets, train them to stay away from the pool area during winter. Consider using motion activated sprinklers or ultrasonic deterrents to discourage animals from approaching the pool.
Remove attractants that might draw animals to the pool area. Do not store pet food, bird seed, or garbage near the pool. Trim vegetation around the pool that might provide cover for small animals. Remove any debris piles or wood stacks that could harbor rodents. Keep the area around the pool clean and unattractive to wildlife.
For rodent problems, consider using repellents around the pool perimeter. Commercial rodent repellents, either chemical or ultrasonic, can deter mice, rats, and other small animals. Place repellents around the pool deck, focusing on areas where animals might access the cover. Reapply chemical repellents after rain or snow as directed by the manufacturer.
Enemy 7: Improper Installation and Maintenance
Improper installation is perhaps the most preventable enemy of pool covers, yet it causes significant damage every winter. A cover installed incorrectly will not perform as designed and is far more vulnerable to all the other enemies discussed in this guide. Common installation errors include inadequate securing, improper sizing, incorrect positioning, and failure to use recommended accessories. These errors compromise cover performance and dramatically shorten cover lifespan.
Improper maintenance throughout winter also damages covers. Neglecting to remove snow, failing to operate cover pumps, ignoring debris accumulation, and not inspecting for damage all contribute to cover failure. Many pool owners install their covers in fall and do not check them again until spring. This neglect allows small problems to become major failures, often resulting in complete cover replacement.
Common Installation Errors
Using inadequate securing devices is a frequent error. Pool owners may use too few water bags or cover blocks, or space them too far apart. This allows wind to lift the cover and creates stress concentration points. Using damaged or worn securing devices is equally problematic. Old water bags that leak or cracked cover blocks do not provide adequate weight.
Improper cover positioning creates problems. The cover must be centered on the pool with adequate overlap on all sides. A cover positioned off center will have inadequate overlap on one side, allowing wind penetration and debris entry. For above ground pools, the cover must be properly aligned with the pool structure for clips or cables to attach correctly.
Failing to use recommended accessories compromises cover performance. Air pillows for above ground pools prevent ice damage and help shed water. Cover pumps for solid covers prevent water accumulation. Cover seals for above ground pools prevent wind from getting under the cover edge. Skipping these accessories to save money often results in cover damage costing far more than the accessories.
The Swimline Aqua Block Pool Cover Weight for Inground Pool Covers provides reliable cover securing for proper installation and wind resistance.
The Swimline Winter Cover Replacement Cable 125 Feet ensures proper cover tensioning for above ground pools preventing sagging and damage.
Maintenance Neglect
Failing to monitor the cover throughout winter allows problems to develop unchecked. Snow accumulation goes unnoticed until the cover tears. Cover pumps fail and water accumulates for weeks. Debris piles up, stressing the cover material. Small tears expand into large failures. All of these problems could be prevented with regular monitoring and maintenance.
Not removing snow promptly is a common maintenance failure. Pool owners may not realize how heavy snow is or may procrastinate snow removal. By the time they address the problem, the cover has already been damaged. Similarly, ignoring standing water on solid covers allows weight to accumulate and algae to grow.
Neglecting to inspect for damage means small problems go unrepaired. A small puncture from a branch could be patched in minutes, but if left unrepaired, it expands into a large tear requiring cover replacement. Regular inspection allows early detection and repair, preventing minor issues from becoming major failures.
Proper Installation and Maintenance
Follow manufacturer installation instructions precisely. Use the recommended number and type of securing devices. Position the cover correctly with adequate overlap. Install all recommended accessories. Take time to do the installation properly rather than rushing through it. A properly installed cover will perform reliably all winter.
Establish a winter maintenance routine. Check the cover monthly at minimum, and after every major storm. Remove snow when it exceeds 2 to 3 inches. Verify cover pumps are operating. Remove debris promptly. Inspect for damage and repair immediately. This regular attention prevents most cover problems and extends cover lifespan significantly.
Keep a cover maintenance kit on hand including a repair patch kit, extra water bags or cover blocks, a soft broom for snow removal, and a cover pump if needed. Having these supplies readily available makes maintenance easier and more likely to be performed. Document your maintenance activities to track cover condition and identify recurring problems.
Conclusion: Protecting Your Pool Cover Investment
Pool covers are significant investments, typically costing $200 to $1,000 depending on size and quality. Protecting this investment from the seven enemies discussed in this guide ensures your cover provides reliable service for its full expected lifespan of 5 to 10 years. The cost of prevention, including proper installation, regular maintenance, and protective accessories, is minimal compared to the cost of premature cover replacement.
The seven enemies (excessive snow, standing water, sharp objects, wind, UV rays, animals, and improper installation) are all preventable or manageable with proper attention. None require expensive solutions or specialized expertise. Regular monitoring, prompt action when problems arise, and proper installation practices are sufficient to protect your cover from all these threats.
Remember that cover damage is usually progressive. Small problems become big problems if neglected. A small puncture expands into a large tear. A slightly loose cover becomes completely unsecured in a windstorm. A bit of standing water becomes a pool of water weighing hundreds of pounds. Early detection and intervention prevent these escalations, saving money and frustration.
Invest time in proper cover installation at the beginning of winter. Follow manufacturer instructions, use adequate securing devices, and install recommended accessories. This upfront investment of time ensures reliable cover performance all winter. Establish a regular monitoring schedule, checking the cover monthly and after major weather events. This ongoing attention catches problems early when they are easy and inexpensive to address.
Quality matters when purchasing pool covers. Premium covers with UV inhibitors, reinforced seams, and heavy duty materials cost more initially but last significantly longer than budget covers. A quality cover properly maintained can last 10 years or more, while a cheap cover may fail after 2 to 3 years. Calculate the cost per year of use rather than just the initial purchase price when selecting a cover.
Keep detailed records of your cover's installation date, maintenance activities, and any repairs. This documentation helps you track cover condition and plan for eventual replacement. It also provides valuable information if warranty claims become necessary. Most quality covers include warranties of 5 to 15 years, but these warranties typically require proper installation and maintenance.
Finally, remember that your pool cover protects your pool investment, which is far more valuable than the cover itself. A damaged cover that allows debris, algae, and contamination into your pool can create problems costing hundreds or thousands of dollars to remedy. Protecting your cover protects your pool, ensuring easy spring opening and years of swimming enjoyment.
By understanding and defending against these seven enemies, you ensure your pool cover provides reliable winter protection season after season. The modest investment in proper installation, regular maintenance, and protective accessories pays enormous dividends through extended cover life and trouble free pool protection. Treat your cover with the care it deserves, and it will serve you well for many winters to come.
Explore our complete selection of winter pool cover accessories and protection supplies.
Key Takeaways:
- Remove snow accumulation when it exceeds 2 to 3 inches to prevent weight damage
- Use cover pump for solid covers to prevent standing water accumulation and weight stress
- Inspect area around pool and remove sharp objects that could puncture or tear cover
- Secure cover properly with adequate water bags, cover blocks, or clips spaced every 3 to 4 feet
- Choose quality covers with UV inhibitors for extended lifespan of 5 to 10 years
- Deter animals with physical barriers, repellents, and removing attractants near pool
- Follow manufacturer installation instructions precisely using all recommended accessories
- Monitor cover monthly during winter and after major storms for damage or problems
- Repair small damage immediately before it expands into major failures
- Store covers properly during off season in cool, dry location away from sunlight
- Cover damage costs $200 to $1,000 to replace versus $50 to $200 for prevention
- Quality covers with proper care last 5 to 10 years providing reliable winter protection
- Regular maintenance extends cover life and prevents expensive pool contamination
- Early problem detection and intervention prevents small issues from becoming major failures
Remember that pool cover protection is an ongoing responsibility throughout winter, not a one time task at closing. The enemies discussed in this guide are constantly working to damage your cover. Your vigilance and regular maintenance are the only defenses. Fortunately, the time and effort required are minimal, typically just a few minutes monthly for inspection and occasional snow or debris removal. This small investment of time protects your cover investment and ensures your pool remains clean and protected all winter. Make cover care part of your winter routine, and enjoy the peace of mind that comes from knowing your pool is properly protected.
