💰 Blue 400M GeoBubble Solar Cover (13ft x 27ft) – Save £500+ Annually on Pool Running Costs
🏊 Budget-Friendly Protection That Pays for Itself in Just One Season
Stop watching your money evaporate. Every day your pool sits uncovered, you’re literally pouring money down the drain—£500-£700 annually in wasted heating, chemicals, and water costs for the average UK pool owner.*
The Blue 400M GeoBubble Solar Cover is specifically engineered for pool owners who want proven savings without premium pricing. This 13ft x 27ft cover transforms your pool from an expensive liability into an efficient, cost-effective asset.
🔥 Real Savings You Can Actually Measure
What This Cover Saves You Every Year:
| Cost Category | Without Cover | With 400M Cover | Your Annual Savings |
|---|---|---|---|
| Heating Energy | £800-£1,200 | £320-£480 | £480-£720/year ✅ |
| Water (Evaporation) | £180-£240 | £18-£24 | £162-£216/year ✅ |
| Chemicals | £180-£250 | £126-£175 | £54-£75/year ✅ |
| Total Annual Costs | £1,160-£1,690 | £464-£679 | £696-£1,011/year 💰 |
Based on average 4m x 8m pool, 6-month swim season, current UK energy rates (£0.24/kWh), water rates (£1.50/m³), May 2024 figures
Payback Period: Approximately 4-6 months of use
❌ The Hidden Costs of Running an Uncovered Pool
Every hour your pool sits exposed to the elements, you’re losing money:
The Evaporation Problem:
- 32,000 litres of water evaporate annually from an uncovered pool (that’s 400 baths)
- Water evaporation is the #1 cause of heat loss—accounting for 70% of total energy waste
- You’re constantly refilling, reheating, and rebalancing chemicals
The Energy Drain:
- Pool heaters work overtime fighting evaporation and heat loss
- 75% of your heating energy escapes into thin air without a cover
- Heat pumps run 3-4x longer to maintain comfortable temperatures
The Chemical Treadmill:
- Chlorine degrades 50% faster under direct UV exposure
- Constant evaporation concentrates chemicals, requiring frequent adjustments
- Debris introduces contaminants that consume chlorine unnecessarily
The Maintenance Burden:
- Daily skimming and cleaning eats into your leisure time
- Filter systems work harder and need more frequent cleaning
- Algae blooms require shock treatments and additional chemicals
The Blue 400M GeoBubble Solar Cover eliminates these problems while paying for itself in saved energy, water, and chemicals.
✅ How the Blue 400M GeoBubble Solar Cover Works
This isn’t just a sheet of plastic—it’s a scientifically engineered heat retention system:
GeoBubble Technology:
The patented GeoBubble design features interconnected bubble cells that:
- Trap insulating air pockets between water and atmosphere
- Create a greenhouse effect that captures solar energy
- Distribute stress evenly across the cover surface
- Last 25% longer than traditional bubble covers
400-Micron Thickness:
The 400M specification provides:
- Optimal heat retention without excessive weight
- Balance between durability and ease of handling
- Sufficient thickness to reduce heat loss by up to 60%
- UV-stabilized material for extended outdoor lifespan
Blue Tint Advantage:
The blue coloration offers:
- Enhanced UV protection for pool chemicals
- Reduced algae growth compared to clear covers
- Aesthetically pleasing appearance that complements most pools
- Slight reduction in excessive solar heating during peak summer
How Heat Retention Works:
- Bubbles face down toward water (air pockets trap solar heat)
- Cover acts as insulating barrier preventing heat escape
- 98% evaporation reduction eliminates primary cooling mechanism
- Water temperature maintained 3-5°C warmer than uncovered pools
💡 Perfect For These Pool Owners
✓ Budget-Conscious Families
Maximum savings with smart upfront investment. The 400M thickness delivers excellent performance at an accessible price point.
✓ Above-Ground Pool Owners
Lightweight enough for easy handling without sacrificing effectiveness. Compatible with most roller systems.
✓ First-Time Cover Buyers
Ideal introduction to pool covers without over-investing. Experience the benefits before upgrading to thicker options.
✓ Seasonal Pool Users
Perfect for May-September swimming seasons. Store during winter and reuse for 4+ years with proper care.
✓ Pools Without Rollers
At 400M thickness, this cover remains manageable for manual application and removal by 1-2 people.
📊 Blue 400M vs. Other Thickness Options
| Feature | 400M Blue | 500M Gold | 600M Gold |
|---|---|---|---|
| Heat Loss Reduction | Up to 60% | Up to 70% | Up to 75% |
| Evaporation Prevention | ~98% | ~98% | ~98% |
| Typical Lifespan | 4-5 years* | 5-6 years* | 6-8 years* |
| Weight/Handling | Lightweight ✅ | Medium | Heavier |
| Price Point | Budget-Friendly 💰 | Mid-Range | Premium |
| Best For | First-time buyers, above-ground pools | Most residential pools | Maximum performance seekers |
| Energy Savings | £480-£720/year | £560-£840/year | £640-£960/year |
With proper care and storage during off-season
Why Choose 400M? If you’re introducing a cover to your pool maintenance routine or operating on a tighter budget, the 400M delivers exceptional value. While thicker covers offer incrementally better performance, the 400M achieves most benefits at a significantly lower cost—making it the smart choice for many pool owners.
🌡️ Temperature & Performance Expectations
What to Expect:
Heat Retention:
- Maintain water temperature 3-5°C warmer than uncovered pools overnight
- Reduce overnight heat loss by 60%
- Extend comfortable swimming season by 2-4 weeks on each end
Solar Heating:
- In optimal conditions (full sun, 6+ hours), add 2-4°C to water temperature
- Blue tint provides moderate solar transmission—prevents overheating while capturing heat
- Works synergistically with heat pumps and solar heaters
Performance Factors:
- ☀️ Sunshine hours: More sun = more solar gains
- 🌡️ Ambient temperature: Warmer climates see faster heating
- 💨 Wind exposure: Covers eliminate wind-chill cooling effect
- 📏 Pool depth: Deeper pools take longer to heat but retain warmth better
🛠️ Technical Specifications
| Specification | Details |
|---|---|
| Dimensions | 13ft x 27ft (3.96m x 8.23m) |
| Material Thickness | 400 microns (0.4mm) |
| Technology | Patented GeoBubble design |
| Color | Blue tint |
| Material | UV-stabilized polyethylene |
| Bubble Orientation | Install with bubbles facing downward |
| Weight (Approximate) | 15-18kg (lightweight for easy handling) |
| Warranty | 4-year solar cover material warranty |
| Manufacturing | Made to order (special order item) |
| Bespoke Sizing | Custom dimensions available |
Compatibility:
- ✅ In-ground pools (rectangular, kidney-shaped with trimming)
- ✅ Above-ground pools
- ✅ Compatible with manual rollers and reel systems
- ✅ Works with all pool types (vinyl, fiberglass, concrete)
- ✅ Safe for use with chlorine, salt, and mineral systems
💧 Environmental & Water Conservation Benefits
Beyond cost savings, this cover makes your pool dramatically more sustainable:
Water Conservation:
- Save 32,000 litres annually—equivalent to 400 baths
- Reduce water bills by 90% related to evaporation refilling
- Particularly critical during UK hosepipe ban periods
- Lower environmental impact from municipal water treatment
Energy Efficiency:
- Cut heating energy consumption by 60%
- Reduce carbon footprint by 2,800-4,200 kg CO₂ annually*
- Complement renewable heating systems (solar, heat pumps)
- Maximize efficiency of existing heating equipment
Chemical Reduction:
- 30% less chlorine needed (approximately 5kg per year)
- Fewer chemical adjustments = less packaging waste
- Reduced chemical runoff during backwashing
- Healthier swimming environment with balanced chemistry
Based on UK average grid carbon intensity of 0.21 kg CO₂/kWh
🔧 Installation & Usage Guidelines
Installation (5-Minute Setup):
- Unroll cover beside pool with bubbles facing up initially
- Position cover over water surface
- Flip orientation so bubbles face DOWN (toward water)
- Trim edges if needed for perfect fit (covers slightly oversized)
- Secure corners using cover weights or reel system
Daily Operation:
When to Use:
- ✅ Every night (retain overnight warmth)
- ✅ During extended non-swimming periods
- ✅ When heating pool (accelerate warm-up)
- ✅ During windy conditions (prevent debris and cooling)
When to Remove:
- ❌ During active swimming (not a safety cover)
- ❌ When pool shock-treating (allow proper gas-off)
- ❌ During heavy chemical adjustments initially
Pump Compatibility: ✅ Yes—run pool pump with cover on! Properly secured covers don’t interfere with circulation. Maintain normal filtration schedule.
🧼 Care & Maintenance (Maximize Lifespan)
Weekly During Season:
- Rinse cover with fresh water to remove chemical residue
- Remove any debris sitting on surface
- Check for proper bubble-down orientation
- Ensure even coverage across water surface
Monthly:
- Inspect for small tears or punctures (repair with patch kit)
- Clean with mild soap solution if needed
- Verify reel system functioning smoothly
- Check pool chemistry levels (balanced chemistry extends cover life)
End of Season Storage:
- Clean thoroughly with mild detergent and rinse
- Dry completely (prevent mold/mildew)
- Roll loosely (avoid tight folds that create permanent creases)
- Store in cool, dry location away from direct sunlight
- Avoid rodent-accessible areas (they may nest in covers)
Proper storage extends lifespan to 4-5 years or longer.
❓ Frequently Asked Questions
Will this cover heat my pool on its own?
The Blue 400M provides moderate solar heating (adding 2-4°C in optimal conditions) but its primary strength is heat retention. For UK climate, we recommend pairing with a heat pump or solar heating system to reach comfortable temperatures (28-30°C), then using the cover to maintain that warmth efficiently.
Can children or pets walk on this cover?
No—this is NOT a safety cover. Solar covers cannot support weight and pose serious safety risks. If you need safety protection, consider a safety-rated cover or perimeter fencing. This cover is designed for heat retention and debris prevention only.
How long does the 4-year warranty cover?
The warranty covers manufacturing defects in materials under normal use conditions. It does not cover improper installation, chemical damage from unbalanced water, UV degradation beyond normal wear, or physical damage from mishandling.
Is 400M thick enough for my needs?
For most pool owners, yes. The 400M thickness provides:
- ✅ Excellent heat retention (60% reduction)
- ✅ Full evaporation prevention (98%)
- ✅ Easy handling without roller assistance
- ✅ 4-5 year lifespan with care
Consider thicker options (500M/600M) if you prioritize maximum heat retention or have particularly exposed/windy locations.
Will the blue color make my pool water blue?
No. The blue tint doesn’t affect water color—it’s purely on the cover material to provide UV filtering and moderate solar transmission properties.
Can I get a custom size?
Yes! This product is available in bespoke sizes. Use the Parts4Tubs solar cover calculator or contact their team for custom dimensions. All covers are made-to-order items.
How do I know if this will fit my pool?
This 13ft x 27ft cover is designed for pools approximately:
- 4.0m x 8.2m (or similar rectangular dimensions)
- Covers are typically cut slightly oversized for trimming to exact fit
- For kidney, L-shaped, or irregular pools, order rectangular size matching longest dimensions and trim to shape
How much weight can I expect?
The 400M cover weighs approximately 15-18kg for this size—manageable for 1-2 people to apply/remove manually. Significantly lighter than 500M or 600M options.
Can I use this year-round?
Not recommended. Solar covers are designed for swim season use (typically May-September in UK). For winter, switch to a dedicated winter cover designed for harsh weather protection. Store your solar cover properly during off-season to maximize lifespan.
What’s the difference between GeoBubble and regular bubble covers?
GeoBubble technology uses a patented interconnected design that distributes stress more evenly, resulting in 25% longer lifespan compared to traditional round bubbles that have stress concentration points leading to premature tearing.
Will this work with my existing roller system?
The Blue 400M is compatible with most standard roller/reel systems designed for bubble covers. Its lightweight nature makes it particularly easy to roll. Verify your roller’s width capacity accommodates the 13ft width.
🎯 Why Buy From Parts4Tubs?
Made-to-Order Quality:
Every cover is manufactured specifically for your order—ensuring fresh, high-quality material rather than warehouse-aged stock.
Expert Guidance:
Access to knowledgeable specialists who understand UK pool conditions and can recommend optimal sizing and thickness.
Competitive Pricing:
Direct-to-consumer pricing eliminates middleman markups—premium GeoBubble technology at budget-friendly costs.
Bespoke Sizing Available:
Not a standard pool size? No problem. Custom dimensions ensure perfect fit for irregular shapes.
4-Year Warranty:
Confidence in product quality backed by comprehensive material warranty.
📋 Important Disclaimers & Assumptions
Savings Calculations Methodology:
The financial savings estimates provided are based on the following assumptions for a typical UK residential pool:
Pool Specifications:
- Pool dimensions: 4m x 8m (32m² surface area)
- Average depth: 1.5m
- Water volume: Approximately 48,000 litres
- Swim season: May through September (150 days)
UK Climate & Usage:
- Location: Southern England average conditions
- Target water temperature: 28°C
- Ambient summer temperature range: 15-22°C average
- Average sunshine hours: 5-6 hours daily during season
- Cover usage: Overnight and during non-swimming periods (16-20 hours daily)
Energy Costs:
- Electricity rate: £0.24/kWh (UK average, May 2024)
- Heat pump efficiency: COP 5.0 (coefficient of performance)
- Baseline heating cost without cover: £800-£1,200 annually
Water & Chemical Costs:
- Water rate: £1.50/m³ (UK average including wastewater)
- Evaporation rate without cover: 6-8mm daily
- Chlorine price: £15-£25 per 5kg container
- Baseline chemical usage: 15-20kg chlorine annually
Cover Performance:
- Heat loss reduction: 60% (based on 400M thickness testing)
- Evaporation reduction: 98% (industry standard for bubble covers)
- Chemical consumption reduction: 30% (research-backed figure)
Individual Results Will Vary Based On:
- ⚠️ Pool size, depth, and shape
- ⚠️ Local climate and weather patterns
- ⚠️ Pool exposure to wind and sun
- ⚠️ Existing heating system type and efficiency
- ⚠️ Actual usage patterns and swimming frequency
- ⚠️ Local utility rates for energy and water
- ⚠️ Water chemistry balance maintenance
- ⚠️ Cover installation quality and daily use consistency
Warranty & Lifespan Disclaimer:
The 4-year material warranty covers manufacturing defects under normal use. Cover lifespan of 4-5 years assumes:
- Proper installation (bubbles facing down)
- Balanced pool chemistry (pH 7.2-7.6, chlorine 1-3ppm)
- Regular cleaning and maintenance
- Proper off-season storage (clean, dry, rolled loosely)
- Protection from physical damage and sharp objects
- Removal during shock treatments and heavy chemical additions
Failure to follow care guidelines may significantly reduce lifespan.
Not a Safety Device:
This solar cover is designed exclusively for heat retention and debris prevention. It is NOT:
- ❌ A safety cover capable of supporting weight
- ❌ Suitable for protecting children or pets from pool access
- ❌ A replacement for proper fencing and supervision
- ❌ Designed for winter storm protection
Always supervise pool areas and maintain proper safety barriers as required by UK regulations.
Performance Disclaimer:
Solar heating performance depends heavily on weather conditions. This cover:
- Excels at heat retention (maintaining existing warmth)
- Provides moderate solar heating gains (2-4°C in optimal conditions)
- Works best as complement to primary heating systems
- Cannot guarantee specific temperature increases
For UK climate, we recommend combining with heat pump or solar heating system for optimal comfort.
🛒 Ready to Start Saving £500+ Per Year?
Every day without this cover costs you money.
The Blue 400M GeoBubble Solar Cover isn’t an expense—it’s an investment that pays for itself in just 4-6 months through reduced heating, water, and chemical costs.
Your Next Steps:
- Verify Sizing: Confirm this 13ft x 27ft (4.0m x 8.2m) fits your pool, or use the solar cover calculator for custom dimensions
- Consider Thickness: Review the comparison table above to ensure 400M meets your performance priorities
- Place Order: All covers are made-to-order for optimal quality and freshness
- Plan Installation: Receive cover, install in 5 minutes, start saving immediately
Special Note: As made-to-order items, covers are manufactured upon purchase—ensuring you receive fresh, high-quality material. Lead times typically 5-10 business days.
Questions? Contact the Parts4Tubs team for expert guidance on sizing, thickness selection, and compatibility with your pool setup.
🌊 Transform your pool from money drain to efficient asset. Order your Blue 400M GeoBubble Solar Cover today and join thousands of UK pool owners who’ve discovered the smart way to swim.


