🏊 Blue 400M GeoBubble Solar Cover – 18ft x 36ft | Save £500+ Annually on Pool Running Costs
Cut Your Pool Heating Bills by 70% While Keeping Your Water Crystal Clear
Transform your 18ft x 36ft pool into an energy-efficient oasis. This budget-friendly Blue 400M GeoBubble solar cover delivers professional-grade heat retention that could save you £500-700 per swimming season on heating costs alone—meaning this cover typically pays for itself within just one season.*
Perfect for above-ground pools and outdoor pools without automatic rollers, this lightweight yet durable cover harnesses the sun’s free energy while protecting your water from debris, evaporation, and unnecessary chemical consumption.
*Based on typical UK outdoor pool usage (May-September), current energy rates of £0.24/kWh, and average pool heating requirements. Individual savings vary based on pool location, existing heating system, and usage patterns.
💰 The Real Cost of Running an Uncovered 18ft x 36ft Pool
Here’s what most pool owners don’t realize: Your uncovered pool is literally draining money every single day through heat loss, water evaporation, and excessive chemical use.
Annual Running Costs Without a Cover:
| Cost Category | Annual Amount | What’s Happening |
|---|---|---|
| Heating Energy | £850-1,200 | Heat escapes through surface evaporation overnight |
| Water Loss | £180-250 | ~32,000 litres evaporate annually (400 baths worth!) |
| Extra Chemicals | £120-180 | Chlorine breaks down faster in UV; water loss requires rebalancing |
| Additional Cleaning | £80-120 | Debris, leaves, insects require frequent intervention |
| TOTAL UNCOVERED | £1,230-1,750/year | Your pool is costing you £3-5 every single day |
Annual Running Costs WITH This 400M GeoBubble Cover:
| Cost Category | Annual Amount | Savings Achieved |
|---|---|---|
| Heating Energy | £255-360 | ✅ 70% reduction in heat loss |
| Water Loss | £36-50 | ✅ 90% reduction in evaporation |
| Extra Chemicals | £84-126 | ✅ 30% reduction in chemical consumption |
| Additional Cleaning | £20-30 | ✅ 75% reduction in debris-related maintenance |
| TOTAL WITH COVER | £395-566/year | You’re saving £835-1,184 annually |
Bottom Line: This solar cover could save you £70-100 per month during swimming season, with a typical payback period of just 4-6 months.*
*Calculations based on: 18ft x 36ft (5.5m x 11m) pool, average depth 1.4m, UK climate (South England), May-September season, gas heating at £0.07/kWh equivalent or heat pump at £0.24/kWh, water rates £2.50/m³, and typical chemical costs. Your actual savings depend on your specific heating system, location, pool usage, and local utility rates.
🔥 How the Blue 400M GeoBubble Cover Works: Science Meets Savings
The GeoBubble Technology Advantage
Unlike cheap bubble covers that last just 1-2 seasons, this cover features patented GeoBubble technology—a scientifically designed bubble structure that:
✅ Lasts 25% longer than traditional rounded bubbles ✅ Resists stress points that cause premature tearing ✅ Maintains consistent thickness across the entire cover ✅ Backed by 4-year manufacturer warranty for peace of mind
Three Ways This Cover Saves You Money:
1. Heat Retention Barrier (Save £500-700 Annually)
The 400-micron thick bubble structure creates thousands of insulating air pockets between your water and the outside air. This acts like a thermal blanket, preventing up to 75% of overnight heat loss.
Real-World Impact: If your pool temperature drops 2-3°C overnight without a cover, this could reduce that loss to just 0.5-0.7°C—saving approximately 6,000 kWh of heating energy per season.
2. Evaporation Elimination (Save £150-200 Annually)
Water evaporation is the single biggest cause of heat loss. By creating a physical barrier, this cover reduces evaporation by up to 90%, keeping approximately 29,000 litres of water in your pool each year.
That’s equivalent to: 365 bathtubs, 14,500 toilet flushes, or enough water to keep your pool topped up without constant refilling.
3. Chemical Protection (Save £36-54 Annually)
Chlorine degrades rapidly under UV exposure. The blue material provides moderate UV filtering while the physical barrier prevents chlorine gas from escaping, reducing your chemical consumption by up to 30% (saving ~5kg of chlorine annually).
Plus: Less evaporation means less water replacement, which means less frequent rebalancing of pH, alkalinity, and calcium hardness.
🌡️ Will This Cover Actually Heat My Pool?
The honest answer: This blue 400M cover is optimized primarily for heat retention rather than active solar heating, but it does provide modest solar gains under the right conditions.
Expected Temperature Performance:
| Scenario | Without Cover | With 400M Blue Cover | Your Benefit |
|---|---|---|---|
| Overnight (12 hours) | Loses 2-3°C | Loses 0.5-0.7°C | Wake up to warmer water |
| Cloudy Day | Loses 1-1.5°C | Maintains temperature | No energy needed |
| Sunny Day | Gains 1°C | Gains 2-3°C | Modest solar heating |
| Weekly Heating Need | 15-20 hours runtime | 5-7 hours runtime | 60-70% less heating |
Why Blue vs. Clear?
- Blue covers offer better UV protection for your chemicals and slightly longer lifespan
- Clear covers allow more solar transmission for active heating but degrade chemicals faster
- For this 400M thickness: Blue is the practical choice for balanced performance and durability
*Temperature changes based on UK climate, pool location, sun exposure, and wind conditions. Your pool’s heat pump or gas heater remains necessary for comfortable swimming temperatures (27-29°C).
💧 Stop Wasting 400 Baths Worth of Water Every Year
Here’s a shocking fact: An uncovered 18ft x 36ft pool loses approximately 32,000 litres of water annually through evaporation alone. That’s:
- 🛁 400 bathtubs of water literally disappearing into thin air
- 💷 £80-100 in wasted water bills (at £2.50-3.12/m³)
- 🧪 Extra chemical costs every time you refill and rebalance
- ⏰ Hours of your time spent topping up and testing water
With This Solar Cover Installed:
✅ 90% reduction in evaporation = save ~29,000 litres/year ✅ Top up your pool 10x less often during swimming season ✅ Maintain chemical balance without constant adjustments ✅ Reduce your environmental impact by conserving precious water
Environmental bonus: You’re preventing the same CO₂ emissions as taking a car off the road for 500 miles annually, just from reduced water treatment and heating energy.*
*Based on UK water treatment energy intensity and heating fuel emissions factors.
✅ Why Choose the 400M Thickness for Your Pool?
The UK market offers solar covers from 400M to 600M thickness. Here’s why the 400M is the smart choice for many pool owners:
400M vs. Thinner Covers (200-300M):
| Feature | Cheap Thin Covers | 400M GeoBubble |
|---|---|---|
| Heat Retention | 50-60% effective | 75% effective |
| Durability | 1-2 seasons | 3-5 seasons |
| UV Resistance | Minimal | Moderate (blue tint) |
| Tear Resistance | Tears easily | GeoBubble structure resists stress |
| Warranty | 1 year or none | 4 years manufacturer warranty |
| Cost per Season | £40-60 | £25-35 (better value long-term) |
400M vs. Premium Covers (500-600M):
| Feature | 400M Blue | 500-600M Gold/Premium |
|---|---|---|
| Heat Retention | 75% | 80-85% |
| Price Point | Budget-friendly | Premium pricing |
| Weight | Lightweight (easy handling) | Heavier (may need roller) |
| Best For | Above-ground pools, manual use | In-ground pools, existing rollers |
| Value Rating | ⭐⭐⭐⭐⭐ Excellent | ⭐⭐⭐⭐ Very good |
The Verdict: The 400M strikes the perfect balance between performance, affordability, and ease of use. Unless you have an automatic roller system or extreme winter use requirements, this thickness delivers 90% of the benefits at 60% of the premium cover cost.
🏗️ Technical Specifications: What You’re Actually Getting
Product Details – Blue 400M GeoBubble Solar Cover (18ft x 36ft)
| Specification | Details |
|---|---|
| Dimensions | 18 feet x 36 feet (5.49m x 10.97m) |
| Material Thickness | 400 microns (0.4mm) |
| Bubble Technology | Patented GeoBubble (stress-resistant design) |
| Color | Blue (UV filtering, chemical protection) |
| Weight | Approximately 28-32kg (lightweight for manual handling) |
| Heat Retention | Up to 75% reduction in overnight heat loss |
| Evaporation Reduction | Up to 90% reduction in water loss |
| UV Resistance | Moderate (blue pigment provides chemical protection) |
| Material | High-grade polyethylene with UV stabilizers |
| Warranty | 4 years manufacturer warranty |
| Installation | Bubbles face DOWN into water |
| Compatibility | Works with pool pumps running, designed for manual use |
| Made to Order | Custom-manufactured to size specifications |
| Lifespan | 3-5 seasons with proper care and winter storage |
What’s Included:
✅ Custom-cut 18ft x 36ft Blue 400M GeoBubble solar cover ✅ 4-year manufacturer warranty ✅ Installation guidance (bubbles down) ✅ Care and storage instructions
What’s NOT Included (Available Separately):
- Pool cover roller/reel system (recommended for easier handling)
- Storage bag (recommended for off-season protection)
- Tie-down straps or fasteners
📐 Perfect Fit Guaranteed: Understanding the 18ft x 36ft Size
Is This the Right Size for Your Pool?
This cover is precisely manufactured to 18 feet x 36 feet (5.49m x 10.97m)—ideal for:
✅ Rectangular pools: 18ft x 36ft or slightly smaller ✅ Above-ground pools: Perfect for standard oval or rectangular models ✅ Pools without automatic systems: Lightweight enough for manual placement
Sizing Best Practices:
Option 1 – Exact Match (Floating): If your pool is exactly 18ft x 36ft, this cover will float on the water surface with edges aligned to your pool walls.
Option 2 – Slight Overlap (Recommended): For pools 17ft x 35ft or similar, the extra material provides better edge coverage and anchoring options.
Option 3 – Trim to Fit: The GeoBubble material can be carefully trimmed if needed, though we recommend ordering as close to your exact size as possible.
Need a Different Size?
Parts4Tubs offers bespoke made-to-measure covers for non-standard pool shapes and sizes. Use our solar cover calculator to determine your exact requirements.
Custom Shapes Available:
- Kidney-shaped pools
- L-shaped pools
- Irregular or freeform pools
- Roman-end pools
🛠️ Installation & Daily Use: Easier Than You Think
Setting Up Your Solar Cover (5-Minute Process)
Step 1: Unroll the cover beside your pool Step 2: Identify which side has the bubbles (they face DOWN into the water) Step 3: Gently pull the cover across the water surface (the bubbles should be touching the water) Step 4: Adjust positioning so coverage is even Step 5: Optional – attach to roller system or use weighted edges
Why bubbles face down: The air pockets in the bubbles are heated by the sun, and positioning them against the water transfers this heat directly into your pool.
Daily Removal & Replacement
Manual Method (2 people, 3-5 minutes):
- Stand on opposite sides of the pool
- Fold the cover accordion-style as you walk toward one end
- Store folded cover out of direct sunlight when not in use
- Reverse process to replace
Roller Method (1 person, 1-2 minutes – RECOMMENDED):
- Attach leading edge to roller bar
- Turn roller handle to wind cover onto reel
- Reverse to deploy cover back onto pool
- Stores cover neatly and extends lifespan
💡 Pro Tip: At 28-32kg, this 400M cover is manageable for manual use, but investing in a £50-150 roller system makes daily operation effortless and protects your investment.
🧹 Maintenance & Care: Maximize Your 4-Year Warranty
Weekly Maintenance (10 Minutes)
While on Pool: ✅ Rinse off debris with garden hose (don’t let leaves sit for days) ✅ Check for proper positioning (should float flat, not bunch up) ✅ Inspect edges for any tears or stress points
When Removed: ✅ Let cover dry before storing on roller ✅ Avoid dragging across rough surfaces (concrete edges, stone decking) ✅ Keep away from sharp objects and pool equipment
Seasonal Maintenance
End of Season (September-October):
- Remove cover and clean thoroughly with mild soap and water
- Allow to dry completely (both sides)
- Fold or roll loosely
- Store in a cool, dry place away from rodents and UV exposure
- NEVER leave solar covers on pools during winter (use proper winter cover instead)
Start of Season (April-May):
- Inspect for any damage from winter storage
- Rinse and clean before redeployment
- Check that bubbles are intact and material is still flexible
What Voids Your Warranty:
❌ Using the cover during winter months (freezing temperatures) ❌ Allowing people or animals to walk on the cover ❌ Exposing cover to harsh chemicals or cleaners ❌ Storing while wet (promotes mold and degradation) ❌ Dragging cover across rough surfaces repeatedly
Expected Lifespan:
- With Proper Care: 4-5 swimming seasons
- Average Use: 3-4 seasons
- Poor Maintenance: 1-2 seasons
Cost Per Season: £25-35 with proper care vs. £60-80 with poor maintenance (having to replace sooner).
❓ Frequently Asked Questions: Blue 400M GeoBubble Cover
General Questions
Q: Will this cover heat my pool or just retain heat? A: The blue 400M is optimized primarily for heat retention (prevents 75% of overnight heat loss) with modest solar heating gains (1-3°C on sunny days). It works in tandem with your heat pump or gas heater—not as a replacement—to dramatically reduce your heating runtime and costs.
Q: Can I use this cover year-round? A: No. Solar covers are designed for swimming season use only (typically April-October in UK). During winter, you must remove and store your solar cover properly, then use a dedicated winter cover to protect against harsh weather and freezing conditions.
Q: How long will this cover last? A: With proper care and seasonal storage, expect 3-5 seasons of use. The GeoBubble technology lasts 25% longer than traditional bubble covers. Your 4-year warranty reflects the manufacturer’s confidence in durability.
Q: Do the bubbles face up or down? A: Bubbles ALWAYS face DOWN (touching the water). The air pockets trap heat from the sun, and positioning them against the water surface allows efficient heat transfer into your pool.
Installation & Use
Q: Can I use this cover while my pool pump is running? A: Yes! A properly positioned solar cover does not interfere with pool circulation. Your skimmers and returns will continue functioning normally. Many pool owners leave covers on 24/7 during swimming season.
Q: Do I need a roller system? A: Not required, but highly recommended. At 28-32kg, this cover can be manually handled by 2 people, but a roller system (£50-150) makes daily use effortless, protects the cover from damage, and extends its lifespan.
Q: What if my pool isn’t exactly 18ft x 36ft? A: This cover works for pools up to these dimensions. If your pool is slightly smaller (17ft x 35ft, for example), the cover will have minor overlap—which is actually beneficial for better edge coverage. If your pool is larger, you’ll need a bespoke size.
Q: Can this cover be trimmed to fit my pool shape? A: Yes, GeoBubble material can be carefully cut to size, but we strongly recommend ordering as close to your exact dimensions as possible. For irregular shapes (kidney, L-shaped, freeform), consider our made-to-measure service.
Performance Questions
Q: Will this stop all evaporation? A: The cover reduces evaporation by approximately 90%, not 100%. Some minimal moisture loss occurs through the cover material itself and around edges, but you’ll eliminate the vast majority of water loss.
Q: How much will I actually save on my energy bills? A: Based on typical UK conditions and an 18ft x 36ft pool, expect to save £500-700 annually on heating costs (70% reduction in energy consumption). Your actual savings depend on your existing heating system, location, and usage patterns.
Q: Does the blue color affect performance compared to clear? A: Blue covers provide better UV protection for your pool chemicals and slightly longer lifespan compared to clear covers. Clear covers allow more solar transmission for active heating but cause faster chemical degradation. For the 400M thickness, blue offers the best balance of performance and durability.
Q: Will this cover prevent algae growth? A: The cover itself doesn’t prevent algae, but it helps by: (1) blocking debris that feeds algae, (2) reducing sunlight penetration (algae needs light), and (3) preserving your chlorine levels. You’ll still need to maintain proper chemical balance. For chronic algae problems, consider the Energy Guard 500M (dark coating specifically blocks algae-causing light).
Warranty & Returns
Q: What does the 4-year warranty cover? A: The warranty covers manufacturing defects, material degradation under normal use, and premature failure of the GeoBubble structure. It does NOT cover damage from improper storage, winter use, physical damage (tears, punctures), or normal wear and tear beyond 4 years.
Q: Can I return this if it doesn’t fit? A: Since all covers are made-to-order items custom-manufactured to your specifications, returns are subject to standard custom-order policies. Please verify your pool dimensions carefully before ordering. Contact customer service if you need sizing assistance.
Q: What if the cover arrives damaged? A: Contact Parts4Tubs immediately upon delivery if you notice any shipping damage. Take photos and report within 48 hours for fastest resolution.
Practical Concerns
Q: Is this cover safe? Can children or pets walk on it? A: NO. This is NOT a safety cover. Solar covers are not designed to support the weight of people or animals. If you have young children or pets, install a perimeter fence or consider a dedicated safety cover. Never allow anyone to walk on your solar cover.
Q: How do I store this cover when not in use? A: During swimming season: Roll onto a reel or fold accordion-style and store in shaded area. Between seasons: Clean thoroughly, dry completely, roll or fold loosely, and store in a cool, dry place away from UV exposure, rodents, and moisture.
Q: What’s the difference between this and the 500M or 600M versions? A: Thickness = heat retention and durability. The 400M retains 75% of heat, 500M retains ~80%, and 600M retains ~85%. The 400M is lightweight and budget-friendly (perfect for manual use), while thicker covers cost more and weigh more (better with roller systems). For most above-ground and smaller outdoor pools, 400M provides excellent value.
Q: Will this work with my above-ground pool? A: Absolutely! The 400M thickness is specifically recommended for above-ground pools due to its lightweight design and easy manual handling. It’s the most popular choice for above-ground pool owners in the UK.
🎯 Who Is This Cover Perfect For?
✅ Ideal Pool Owners:
Above-Ground Pool Owners You need a lightweight cover that’s easy to handle without complex roller systems. The 400M thickness is the sweet spot for manual use.
Budget-Conscious Families You want professional-grade performance without premium pricing. This cover delivers 90% of the benefits at 60% of the cost of thicker alternatives.
First-Time Cover Buyers You’re new to pool covers and want a reliable, proven solution that balances all benefits—heat retention, evaporation reduction, debris protection—without breaking the bank.
Pool Owners Without Roller Systems At 28-32kg, this cover is light enough for 2-person manual handling, though we still recommend investing in an affordable roller for convenience.
Seasonal Pool Users (May-September) You open your pool in late spring and close it in early autumn. This cover is perfect for protecting your investment during peak swimming months.
Energy Bill Reducers Your heating costs are the biggest expense, and you want to cut them by 70% without sacrificing swim comfort.
⚠️ Consider Alternatives If:
You Have Chronic Algae Problems → Upgrade to Energy Guard 500M (dark coating blocks algae-causing light)
You Want Maximum Solar Heating → Choose Sol+Guard 500M (translucent for UV transmission and active heating)
You Have An Automatic Roller System → Consider 500M or 600M Gold (heavier covers work better with roller systems)
You Need Premium Heat Retention → Upgrade to 600M Gold GeoBubble (best-in-market heat retention with aluminum backing)
You Have Young Children or Pets → You need a dedicated safety cover, not a solar cover (solar covers cannot support weight)
💷 Investment Breakdown: Understanding True Value
Initial Investment
| Item | Cost | Notes |
|---|---|---|
| Blue 400M GeoBubble Cover (18ft x 36ft) | [Current Price] | Made-to-order, 4-year warranty |
| Optional: Pool Cover Roller | £50-150 | Highly recommended for daily use |
| Optional: Storage Bag | £15-30 | Protects cover during off-season |
| TOTAL INITIAL INVESTMENT | [Price] + £65-180 | One-time purchase for 4-5 seasons |
Return on Investment (ROI) Analysis
Scenario 1: With Existing Heat Pump
| Metric | Without Cover | With 400M Cover | Your Savings |
|---|---|---|---|
| Annual heating cost | £850 | £255 | £595/year |
| Annual water cost | £200 | £40 | £160/year |
| Annual chemical cost | £150 | £105 | £45/year |
| Annual cleaning time | 40 hours | 10 hours | 30 hours saved |
| TOTAL ANNUAL SAVINGS | – | – | £800 + 30 hours |
| Payback Period | – | – | 4-5 months |
Scenario 2: With Gas Heating
| Metric | Without Cover | With 400M Cover | Your Savings |
|---|---|---|---|
| Annual heating cost | £1,100 | £330 | £770/year |
| Annual water cost | £200 | £40 | £160/year |
| Annual chemical cost | £150 | £105 | £45/year |
| Annual cleaning time | 40 hours | 10 hours | 30 hours saved |
| TOTAL ANNUAL SAVINGS | – | – | £975 + 30 hours |
| Payback Period | – | – | 3-4 months |
5-Year Total Cost of Ownership
Without Solar Cover:
- Heating: £4,250-6,000
- Water: £900-1,250
- Chemicals: £600-900
- 5-Year Total: £5,750-8,150
With 400M GeoBubble Cover:
- Cover investment: [Price] + roller
- Heating: £1,275-1,800
- Water: £180-250
- Chemicals: £420-630
- 5-Year Total: £1,875-2,680 + [Cover Price]
Net 5-Year Savings: £3,500-5,000 (even after cover investment)
*ROI calculations based on typical UK outdoor pool usage, current energy rates, and average pool maintenance costs. Individual results vary based on pool location, existing heating efficiency, local climate, and usage patterns.
🌍 Environmental Impact: More Than Just Money
Your Positive Environmental Contribution
By using this 400M GeoBubble solar cover, you’re not just saving money—you’re making a meaningful environmental impact:
Annual Water Conservation:
- ♻️ Save 29,000 litres of treated water (90% evaporation reduction)
- 🌊 Prevent the energy needed to treat and pump 400 bathtubs worth of water
- 💧 Equivalent to the daily water usage of 85 people
Annual Energy Reduction:
- ⚡ Save 5,000-7,000 kWh of heating energy (70% reduction)
- 🔥 Equivalent to powering an average UK home for 1.5-2 months
- 🌱 Prevent 1.2-1.7 tonnes of CO₂ emissions annually
Chemical Reduction:
- 🧪 Use 5kg less chlorine per year (30% reduction)
- 🏭 Reduce chemical manufacturing and transportation footprint
- 🐟 Less chemical runoff into natural water systems during pool draining
Combined Environmental Benefit: Using this solar cover for one season has roughly the same carbon offset as:
- 🚗 Taking a car off the road for 500 miles
- 🌳 Planting 65 tree seedlings
- ♻️ Recycling 400kg of waste instead of landfilling
Sustainability Note: The cover itself is made from polyethylene, which can be recycled at end-of-life. Check with your local recycling center for plastic film recycling programs.
📋 Complete Comparison: 400M vs. Other Pool Cover Options
How Does the Blue 400M Stack Up?
| Feature | Blue 400M GeoBubble (This Product) | 500M Gold | 600M Gold | Winter Cover | Safety Cover |
|---|---|---|---|---|---|
| Price Point | £ (Budget-friendly) | ££ | £££ | ££ | ££££ |
| Heat Retention | 75% | 80% | 85% | None | 70% |
| Evaporation Reduction | 90% | 95% | 98% | 95% | 98% |
| Weight | Lightweight (28-32kg) | Medium (35-40kg) | Heavy (42-48kg) | Medium | Heavy |
| Manual Handling | ✅ Easy (2 people) | ⚠️ Moderate | ❌ Difficult | ⚠️ Moderate | ❌ Requires system |
| Roller Compatible | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes | ❌ Track-based |
| Seasonal Use | Summer only | Summer only | Summer only | Winter only | Year-round |
| Warranty | 4 years | 4-5 years | 5-6 years | 5 years | 3-5 years |
| Lifespan | 3-5 seasons | 4-6 seasons | 5-7 seasons | 5-8 years | 10-15 years |
| Safety Rating | ❌ Not safe | ❌ Not safe | ❌ Not safe | ❌ Not safe | ✅ Supports weight |
| Debris Protection | ✅ Excellent | ✅ Excellent | ✅ Excellent | ✅ Excellent | ✅ Complete seal |
| Chemical Protection | ✅ Good (UV filtering) | ✅ Very good | ✅ Excellent | ✅ Good | ✅ Complete seal |
| Best For | Above-ground, budget | All-rounder | Premium performance | Winter closure | Families, safety |
| Value Rating | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐ |
Why the 400M Wins for Most Pool Owners:
✅ Best cost-to-performance ratio (90% of benefits at 60% of premium cost) ✅ Lightweight enough for manual use without expensive roller systems ✅ Perfect for above-ground pools (most popular in UK) ✅ Proven technology (GeoBubble lasts 25% longer than traditional) ✅ 4-year warranty provides peace of mind ✅ Saves £500-700 annually with typical 4-5 month payback period
When to Upgrade:
- If you have an existing automatic roller → 500M or 600M for better performance
- If you have chronic algae → Energy Guard 500M dark coating
- If you prioritize maximum solar heating → Sol+Guard 500M translucent
- If you need safety features → Dedicated safety cover system
🚀 Getting Started: Your Next Steps
Ready to Start Saving £500-700 Per Season?
Step 1: Verify Your Pool Dimensions This cover is pre-sized to 18ft x 36ft (5.49m x 10.97m). Measure your pool to confirm:
- Length (longest point)
- Width (widest point)
- Shape (rectangular, oval, irregular)
Step 2: Consider Optional Accessories While not required, these items maximize your investment:
- ✅ Pool cover roller (£50-150) – makes daily use effortless
- ✅ Storage bag (£15-30) – protects cover during off-season
- ✅ Cover cleaner spray (£8-15) – maintains material longevity
Step 3: Place Your Order Remember: All covers are made-to-order items custom-manufactured to specifications. Production typically takes 7-14 days, so order before your swimming season begins.
Step 4: Installation & Activation Once your cover arrives:
- Unroll beside pool with bubbles facing down
- Deploy across water surface
- Adjust for even coverage
- Start saving immediately!
Need a Different Size?
Non-Standard Pools? Parts4Tubs offers bespoke made-to-measure covers for:
- Custom sizes (any dimensions)
- Irregular shapes (kidney, L-shaped, freeform)
- Roman-end pools
- Lazy-L configurations
Use our Solar Cover Calculator to generate your exact specifications.
Still Have Questions?
Contact Our Pool Cover Experts:
- 📞 Phone: [Number]
- 📧 Email: [Email]
- 💬 Live Chat: Available Monday-Friday, 9am-5pm
Our knowledgeable team can help with:
- Size verification and recommendations
- Cover thickness comparisons
- Roller system suggestions
- Custom sizing for irregular pools
- Installation guidance
🛡️ Your Investment Protection
What’s Covered by the 4-Year Manufacturer Warranty
✅ Protected:
- Manufacturing defects in materials
- Premature degradation of bubble structure
- GeoBubble technology failure under normal use
- Material breakdown from proper chemical exposure
- Seam separation or material splitting
❌ Not Covered:
- Damage from winter use (freezing temperatures)
- Physical damage (tears, punctures, cuts)
- Improper storage (wet storage, UV exposure, rodent damage)
- Weight bearing (people or animals walking on cover)
- Harsh chemical exposure (shocking directly on cover)
- Normal wear and tear beyond 4 years
Our Commitment to Quality
Made-to-Order Precision: Each cover is custom-manufactured to exact specifications ensuring:
- Precise dimensions (±2cm tolerance)
- Consistent 400-micron thickness throughout
- Quality-controlled bubble formation
- Professional heat-sealed edges
GeoBubble Technology Standard: Unlike cheap imported covers, authentic GeoBubble technology provides:
- 25% longer lifespan than traditional rounded bubbles
- Reduced stress points that cause premature failure
- Consistent thermal performance across entire cover
- Proven track record in UK climate conditions
⚠️ Important Disclaimers & Assumptions
Savings Calculations Explained
All financial savings estimates provided on this page are based on the following assumptions for a typical UK outdoor pool scenario:
Pool Specifications:
- Size: 18ft x 36ft (5.49m x 10.97m) rectangular pool
- Average depth: 1.4 meters
- Water volume: Approximately 85,000 litres
- Location: South England climate zone
- Season: May to September (20 weeks/140 days)
Energy & Utility Rates:
- Electricity: £0.24 per kWh (UK average as of 2024-2025)
- Gas equivalent: £0.07 per kWh heating value
- Water & sewerage: £2.50-3.12 per cubic meter (regional variation)
- Chemical costs: Based on typical UK retail pricing for pool chlorine and balancing chemicals
Usage Patterns:
- Target pool temperature: 27-29°C for comfortable swimming
- Heat pump COP (Coefficient of Performance): 5.0 (modern efficient unit)
- Heating hours without cover: 15-20 hours per week
- Heating hours with cover: 5-7 hours per week (70% reduction)
- Cover deployment: Minimum 12 hours per day (overnight + cloudy periods)
Performance Assumptions:
- Heat retention: 75% reduction in overnight heat loss (manufacturer data)
- Evaporation reduction: 90% (industry standard for properly fitted covers)
- Chemical savings: 30% reduction (based on UK pool research)
- Debris reduction: 75-90% less cleaning time required
Variables That Affect Your Results
Your actual savings will vary based on:
Geographic Factors:
- ☀️ Sun exposure hours (Scotland vs. South England)
- 🌡️ Average ambient temperature
- 💨 Wind exposure (increases evaporation without cover)
- 🌧️ Rainfall (affects outdoor pool maintenance)
Pool-Specific Factors:
- 📏 Actual pool size and depth
- 🏗️ Pool type (above-ground vs. in-ground)
- 🌳 Shade from trees, buildings, structures
- 🔄 Circulation system efficiency
Heating System Factors:
- 🔥 Heating type (gas, electric, heat pump, solar)
- ⚡ System efficiency and age
- 🌡️ Thermostat settings
- ⏰ Heating schedule
Usage Factors:
- 🏊 Frequency of pool use (daily vs. weekends)
- ⏱️ Season length (some extend April-October)
- 🎯 Cover deployment consistency (% of time covered)
- 🧹 Existing maintenance routine
Why We Provide These Calculations:
We believe in transparent, data-driven decision making. While your specific results will vary, these calculations provide a realistic framework for understanding the value proposition of investing in a quality solar pool cover.
Our Promise: The savings principles are real and proven. Even if your actual savings are 50% of our estimates, this cover will still pay for itself within one season for most UK pool owners.
📊 Final Summary: Make the Smart Investment Today
The Bottom Line
What You’re Buying: A professional-grade Blue 400M GeoBubble solar cover, custom-manufactured to 18ft x 36ft dimensions, backed by a 4-year warranty and designed to last 3-5 swimming seasons with proper care.
What You’re Really Getting:
- 💰 £500-700 annual savings on heating, water, and chemicals
- ⏰ 30+ hours saved per season on pool cleaning and maintenance
- 🌡️ 75% reduction in overnight heat loss = warmer morning swimming
- 💧 29,000 litres of water saved annually (90% evaporation reduction)
- 🧪 30% less chemicals needed = better water balance and lower costs
- 🌍 1.5 tonnes less CO₂ per year = meaningful environmental impact
- 🛡️ 4-year warranty protection = peace of mind investment
Your Payback Timeline: Most pool owners recover their investment in 4-6 months of typical swimming season use, meaning years 2-5 are pure savings and environmental benefits.
Risk Assessment:
- ✅ Low risk: Proven technology, 4-year warranty, made-to-order quality
- ✅ Reversible: If you’re not satisfied after one season, sell secondhand
- ✅ Incremental costs: No ongoing fees or subscriptions
- ✅ Compatible: Works with any heating system and pool configuration
Three Reasons to Buy Today
1. Energy Prices Aren’t Decreasing UK energy costs have risen 40% in recent years and remain volatile. Every season you delay is another season paying full heating costs. Lock in 70% savings starting now.
2. Made-to-Order Manufacturing Production takes 7-14 days. Order now to have your cover ready for peak swimming season (May-September). Don’t wait until June and miss weeks of optimal use.
3. Water Scarcity Awareness With increasing UK focus on water conservation and potential hosepipe bans, proactively reducing your pool’s 32,000-litre annual evaporation demonstrates environmental responsibility.
Your Decision Made Simple
If you answered YES to any of these, this cover is for you:
- ✅ Do you spend £500+ annually on pool heating?
- ✅ Do you top up your pool multiple times per summer?
- ✅ Do you spend hours cleaning debris from your pool?
- ✅ Do you want your pool water warmer in the mornings?
- ✅ Do you value environmental sustainability?
- ✅ Do you want lower monthly pool running costs?
🎁 Order Your Blue 400M GeoBubble Solar Cover Today
Transform your 18ft x 36ft pool into an energy-efficient, low-maintenance oasis. Start saving £500-700 per season while enjoying warmer water and crystal-clear swimming.
What You Get:
✅ Custom-manufactured 18ft x 36ft Blue 400M GeoBubble solar cover ✅ 4-year manufacturer warranty ✅ GeoBubble technology (25% longer lifespan) ✅ Expert sizing and installation guidance ✅ Made-to-order quality assurance


