Sol+Guard Pool Solar Cover (rectangular) – When solar energy meets science

If you want to heat your pool cost-effectively. If you hate evaporation (pools lose 5-10mm of water daily). If you love warm water – without the electricity bill.

They have a pool. Unheated (no heat pump, no solar heating). The problem:

In the morning: the water is 18°C ​​(cool, uncomfortable). The sun shines during the day → the water warms up to 22°C (comfortable). Overnight: evaporation (water evaporates from the surface → taking heat with it) → the pool loses 3-4°C → back to 18°C ​​in the morning . The cycle begins again.

The result: The pool is only warm in the afternoon (22-24°C, short time window). Too cold in the mornings/evenings. Swimming season shortened (only June-August, 3 months instead of 5 months).

Plus: Evaporation = water loss (5-10 mm daily = 150-300 liters/day for a 30 m² pool = 4,500-9,000 liters/month to refill). Plus: Water loss = pH value rises (water becomes harder) = more chemicals needed.

There is a solution. One that costs zero electricity.

The Sol+Guard solar pool cover with GeoBubble technology – the scientifically developed pool cover. Transparent (allows 80% of solar energy to pass through). Two effects simultaneously: (1) heating the water (through solar radiation, like a greenhouse), (2) storing heat (by preventing evaporation overnight).

What you will receive:

• Water temperature +2-8°C (depending on sunlight, location, pool)
• Evaporation reduced by 98% (pool hardly loses any water overnight)
• Swimming season extended (April-October instead of June-August = +3 months)
• GeoBubble technology (patented, 25% longer lifespan than standard solar films)
• Transparent blue-turquoise (allows 80% visible + infrared light to pass through)
• 500 micron material thickness (robust, durable)
• Dirt control (leaves/insects stay out)
• Custom-made (rectangular, individually tailored to your pool)
• Zero electricity costs (sun = free)

The result: You put a solar cover on the pool in the evening (water is 24°C). Overnight: Evaporation stops (the cover forms a barrier). In the morning: The water is 23°C (instead of 20°C). You swim in the warm pool in the morning – instead of waiting until the afternoon.

May. Water is 18°C ​​(unheated, too cold). With a solar cover: 2 weeks of sun (cover on daily, at night) → water warms up to 24°C. You can swim at the beginning of May – instead of mid-June.

The 5 most important advantages at a glance:

• Water temperature +2-8°C through solar energy : Transparent material allows 80% of solar energy to pass through (visible + infrared spectrum), greenhouse effect (heat comes in, stays in), pool heats up for free by the sun, +2-4°C in cloudy weather, +4-8°C in sunny weather
• Evaporation reduced by 98% = heat stored : The foil forms a barrier between the water and the atmosphere (evaporation stopped), the pool only loses 0.5°C overnight (instead of 3-4°C), saves 4,500-9,000 liters of water per month (for a 30 m² pool), pH value more stable (fewer chemicals needed)
• GeoBubble technology = 25% longer lifespan : Patented bubble shape (scientifically developed, not round like standard films), reduces material stress (fewer cracks, less UV damage), lasts 5-7 years (standard films: 3-5 years), more robust and durable
• Swimming season extended by 3 months (April-October) : Without solar cover: June-August (3 months, only high summer), with solar cover: April-October (7 months, spring + autumn), more use = better amortization of your pool investment
• Dirt control = less cleaning work : leaves/pollen/insects stay out (don't fall into the water), less netting (saves 1-2 hours/week), less algae growth (film is opaque = less sunlight in the water)

Who is this solar film ideally suited for?

Reality check : The Sol+Guard pool solar cover is for people with unheated pools who want to heat their pools for free (without electricity, without gas) – and extend the swimming season (use spring and autumn, not just summer).

✓ People with unheated pools (who don't want to invest in a heat pump)
A heat pump costs €3,000-€6,000 (purchase) + €150-€300/month for electricity (operation). That's expensive. You want a cheaper way to heat your pool. Solar cover: One-time cost of €200-€800 (depending on pool size) + zero operating costs (sunlight is free). Payback period: 1 year (compared to a heat pump).

✓ People who want to extend the swimming season (April-October instead of June-August)
Without heating: The pool is only warm from June to August (22-26°C, 3-month swimming season). April/May: too cold (16-20°C). September/October: too cold (18-22°C). With a solar cover: The pool heats up faster in spring (April: 20°C → 24°C with the solar cover) and stays warm longer in autumn (October: 18°C ​​→ 22°C with the solar cover). Swimming season: 7 months instead of 3 months.

✓ People who hate evaporation (water loss + pH problems)
Without a cover: The pool loses 5-10 mm of water daily through evaporation (at an air temperature of 30°C, a 30 m² pool = 150-300 liters/day = 4,500-9,000 liters/month). You have to constantly refill it (garden hose, 30 minutes weekly). Plus: Water evaporates → pH value rises (water becomes harder) → more pH reducer is needed. With a solar cover: Evaporation is reduced by 98% → the pool only loses 1-2 liters/day → hardly any refilling required → pH value remains stable.

✓ People with rectangular pools (6 x 3m, 8 x 4m, 10 x 5m)
This solar cover is rectangular (made to measure). It fits rectangular pools perfectly. Standard sizes: 6 x 3m (18 m²), 8 x 4m (32 m²), 10 x 5m (50 m²). Custom sizes: Available upon request (email – we manufacture to order).

✓ People who want to swim in the morning (not just in the afternoon)
Without a solar cover: The pool is cold in the morning (18-20°C, cooled down by overnight evaporation). You wait until the afternoon (the pool warms up to 22-24°C in the sun). With a solar cover: The pool stays warm overnight (evaporation stopped) → 22-24°C in the morning → you swim in the morning (before work, before breakfast) → more flexibility.

✓ People who want to use fewer chemicals (environmentally conscious)
Evaporation → water evaporates → mineral concentration increases (hardness increases) → pH value rises → more pH reducer needed → more chlorine needed (harder water = less effective chlorine). Plus: Without a cover, leaves/pollen fall into the water → nutrients for algae → more algaecide needed. With a solar cover: evaporation is stopped (pH value stabilizes, less pH reducer required) + dirt stays out (less algaecide needed). You save 30-50% on chemicals.

✓ People in sunny regions (Southern Germany, Austria, Switzerland)
Solar film works through sunlight . The more sun, the greater the heating. Southern Germany (Baden-Württemberg, Bavaria): 1,800-2,000 hours of sunshine/year → solar film is very effective (+4-8°C). Northern Germany (Schleswig-Holstein, Lower Saxony): 1,500-1,700 hours of sunshine/year → solar film is less effective (+2-4°C, but still worthwhile).

✓ People with small budgets (who don't have much money)
Heat pump: €3,000-€6,000. Solar heating: €2,000-€4,000. Too expensive. Solar cover: €200-€800 (depending on pool size). Much cheaper. It works more slowly (doesn't heat up as quickly as a heat pump) – but it's free to run (zero electricity costs).

✓ People who appreciate GeoBubble technology (durable + robust)
Standard solar films (with round bubbles): Last 3-5 years (UV radiation damages the material, bubbles burst). GeoBubble technology (patented bubble shape): Lasts 5-7 years (25% longer lifespan, reduced material tension). More economical in the long run (less frequent replacement).

Product description: When transparency meets insulation

The concept: Two effects simultaneously – heating + storage

Standard pool covers (winter covers, roller covers) are opaque (dark, light-blocking). Advantage: Reduces algae growth. Disadvantage: Does not allow solar energy to pass through → water does not heat up.

Solar films are different: Transparent (clear or slightly tinted blue-turquoise). Advantage: They let solar energy through → the water heats up. Plus: They also insulate (GeoBubble bubbles = air layer = insulation).

The Sol+Guard pool solar cover combines both:

Effect #1: Warming (by sunlight)
Transparent material → allows 80% of solar energy to pass through (visible + infrared spectrum) → energy enters the water → heats the water → greenhouse effect (heat comes in, film keeps heat in).

Effect #2: Storage (by stopping evaporation)
The foil forms a barrier between the water and the atmosphere → evaporation is stopped (water can no longer evaporate) → heat remains in the pool (otherwise, evaporating water carries heat away) → pool stays warm overnight .

The result: During the day, the sun warms the pool (+2-4°C). At night, the heat is retained (evaporation stops, only -0.5°C instead of -3°C). Next day: The pool is warmer than before → the sun continues to warm it → the pool gets even warmer.

GeoBubble technology – 25% longer lifespan

The problem with standard solar films:

Standard films have round bubbles (air bubbles that insulate). Problem: Round shape = stress points (at the junctions between bubbles) → UV radiation concentrates there → material becomes brittle → bubbles burst → film becomes leaky → lifespan: 3-5 years.

The solution: GeoBubble technology

Patented bubble shape (developed through scientific research, not round).

What does GeoBubble look like?

Two interconnected hemispherical bubbles (like two domes touching). Connection: Gently curved (no sharp edges, no stress points).

Advantage:

• Reduced material stress (no stress points → fewer cracks)
• Improved UV resistance (UV radiation is distributed evenly → material ages more slowly)
• Longer lifespan (25% longer than standard films = 5-7 years instead of 3-5 years)

Plus: GeoBubble bubbles offer better buoyancy (the foil floats better on water) + better insulation (air layer between bubbles = thermal insulation).

Transparent blue-turquoise – 80% light transmission

Colour: Transparent blue-turquoise (slightly tinted, not completely transparent).

Why not completely transparent?

Completely transparent films (clear, like cling film) allow 100% light to pass through → more algae growth (sunlight = algae food). Blue-turquoise tinted films (like Sol+Guard) allow 80% light to pass through → less algae growth (20% light blocked) + still effective heating (80% light is perfectly sufficient).

How much solar energy gets through?

80% from the visible + infrared spectrum. Visible light (which we see) + infrared light (heat radiation) = together 80% of the sun's energy reaches the water.

Practical tip: On a sunny day (30°C air temperature, full sun): The pool heats up by +4-8°C over 2-3 days (depending on starting temperature, pool size, and solar radiation).

500 micron material thickness – Robust + durable

Material thickness: 500 microns (0.5 mm).

Is that thick or thin?

Standard solar films: 300-400 microns (thin, less robust).
Sol+Guard: 500 microns (thicker, more robust).
Premium solar films: 600-800 microns (very thick, very robust – but also more expensive).

Advantage of 500 microns:

• More robust than standard liners (less prone to tearing from sharp objects – branches, pool edges)
• Longer lasting (lasts 5-7 years with GeoBubble technology)
• Better insulation (thicker material = better thermal insulation)

Disadvantage: Somewhat heavier (more difficult to handle when putting it on/taking it off – but still manageable for 1-2 people with pools <50 m²).

Evaporation reduced by 98% – water and heat saved

The problem without solar film:

Evaporation is the main cause of heat loss in pools. Water evaporates from the surface (especially at night when the air is cooler than the water) → takes heat with it → the pool cools down.

Pay:

• Pool 8 x 4m (32 m²), unheated, 24°C water temperature, 15°C night temperature
• Without a cover: Pool loses 3-4°C overnight (due to evaporation and radiation)
• Water loss: 5-10 mm daily = 160-320 liters/day = 4,800-9,600 liters/month

With Sol+Guard solar film:

The foil forms a barrier between water and atmosphere → evaporation is reduced by 98% → pool only loses 0.5°C overnight (instead of 3-4°C) → water loss: only 10-20 liters/month (instead of 4,800-9,600 liters).

This saves:

• Water: 4,500-9,000 liters/month (= 13,500-27,000 liters/season over 3 months)
• Water costs: At €4/m³ = €54-108 saved per season
• Chemicals: Less frequent refilling = more stable pH value = less pH reducer/chlorine needed = €30-50 saved per season
• Heat: Pool stays warm overnight = ready for swimming in the morning

Heat retention + temperature increase – double effect

Heat retention (at night):

GeoBubble bubbles = air layer = thermal insulation. Air is a poor conductor of heat than water → heat stays in the pool (is not released into the atmosphere).

Plus: Evaporation stopped (film forms a barrier) → no evaporative cooling → pool stays warm overnight .

Practical: Evening temperature 24°C → cover with foil → morning temperature 23.5°C (only -0.5°C lost instead of -3°C).

Temperature increase (during the day):

Transparent material allows 80% of solar energy to pass through → heat enters the water → heats the water → greenhouse effect (film lets heat in, keeps it in).

Practical: Morning 20°C → leave the foil on during the day (full sun, 8 hours) → evening 24°C (+4°C through solar energy).

The cycle:

• Day 1, morning: 20°C → cover on during the day (sunshine) → evening: 24°C → cover on at night → morning. Day 2: 23.5°C
• Day 2, morning: 23.5°C → foil on during the day → 26°C in the evening → foil on at night → Day 3, morning: 25.5°C
• After 3-5 days: Pool has reached 26-28°C (equilibrium – pool does not heat up further because heat losses = heat gains)

Dirt control – leaves/insects stay out

Side effect: Solar film = cover.

Practical: Foil lies on the pool → leaves/pollen/insects fall onto the foil (not into the water) → pool stays clean .

This saves:

• Netting: Fewer leaves in the water = less netting (1-2 hours/week saved)
• Filter cleaning: Less dirt = filter clogs more slowly = less frequent backwashing
• Algicide: Less organic material (leaves/pollen) = fewer nutrients for algae = less algicide needed.

Plus: The foil is slightly opaque (blue-turquoise tinted) → reduces sunlight in the water (blocks 20%) → less algae growth (algae need sunlight to grow).

Custom-made – rectangular, individually tailored to your pool

The Sol+Guard solar film is custom-made (not a standard size).

Rectangular shape: Fits rectangular pools (6 x 3m, 8 x 4m, 10 x 5m, other sizes).

After ordering:

• You specify the dimensions (length x width of your pool – internal dimensions)
• The manufacturer produces the film exactly to your dimensions (individually cut).
• A liner is included (fits your pool perfectly)

Important: Measure precisely (inside dimensions of the pool – from wall to wall). Recommendation: The liner should be 5-10 cm smaller than the pool (so the liner doesn't rub against the walls → less wear).

Custom sizes: Do you need an oval shape? A round shape (see separate product)? Very large pools (>10 x 5m)? → Email us for a quote – we manufacture to order.

Important: Custom-made = no returns/exchanges possible (as with all custom products).

Technical specifications at a glance

Material:

• GeoBubble technology (patented bubble shape)
• Material thickness: 500 microns (0.5 mm)
• Color: Blue-turquoise, transparent

Perfomance:

• Light transmission: 80% (visible + infrared spectrum)
• Evaporation reduction: Up to 98%
• Temperature increase: +2-8°C (depending on solar radiation)
• Heat loss overnight: Only -0.5°C (instead of -3-4°C)

Longevity:

• Lifespan: 5-7 years (25% longer than standard films)
• UV-resistant, weather-resistant

Form:

• Rectangular (custom-made for your pool)
• Special shapes: Available on request (oval, very large)

Advantages:

• Free heating (solar energy = free)
• Water savings: 4,500-9,000 liters/month
• Chemical savings: 30-50%
• Swimming season extended by 3 months (April-October instead of June-August)
• Dirt control: Leaves/insects stay out

Scope of delivery

✓ Pool solar cover Sol+Guard (custom-made, rectangular)
✓ GeoBubble technology (patented bubble shape)
✓ 500 micron material thickness
✓ Transparent blue-turquoise

Why people choose Sol+Guard solar film

"My pool (8 x 4m, unheated) was only usable from June to August (3 months) without a solar cover. With Sol+Guard: April to October (7 months). The pool heats up faster in spring and stays warm longer in autumn. Swimming season doubled!"
– Mr. K., 48 years old, unheated pool

"Before: The pool lost 3°C ​​overnight (through evaporation). In the morning it was 19°C – too cold to swim. With a solar cover: In the morning it's 23°C (only -0.5°C lost). I now swim in the morning before work."
– Mrs. M., 42 years old, early morning swimmer

"I had to refill 5,000-8,000 liters of water every month (evaporation). Water bill: €30/month just for the pool. With a solar cover: Only 200-500 liters/month to refill. I save €25/month = €75/season."
– Mr. S., 55 years old, hates wasting water

"GeoBubble technology really does last longer. My old standard film (round bubbles) burst after 3 years. Sol+Guard: Now 6 years old – still intact. Better investment."
– Mrs. L., 62 years old, long-term user

"The pool was always full of leaves in the mornings (trees nearby). 20 minutes of scooping every morning. With a solar cover: leaves stay out. Remove the cover in the morning – water is clear. Zero work."
– Mr. T., 51 years old, hates fishing with nets

"A heat pump would have cost €4,000. A solar cover: €450. It works more slowly (the pool takes 3-4 days to heat up instead of 1 day) – but it uses zero electricity. Payback period: immediate."
– Couple, budget-conscious

Frequently Asked Questions – Honest Answers

Q: How much warmer will my pool actually get?
A: Depends on sunlight, location, pool size, and starting temperature. Typically: +2-4°C in cloudy weather (diffuse light), +4-8°C in sunny weather (full sun), over 3-5 days. Example: Pool starts at 18°C ​​(early May) → after 5 days of sun with a solar cover → 24-26°C.

Q: Does solar film also work on cloudy days?
A: Yes (less effective). Cloudy skies = diffused light (no direct sun). The solar cover still lets through 80% of the light → the pool heats up more slowly (+1-2°C/day instead of +2-4°C/day). Plus: Evaporation prevention always works (even on cloudy days) → heat stays in.

Q: Do I need to leave the solar cover on during the day (or remove it)?
A: For heating: Leave it on (cover on pool during the day → sun heats water → greenhouse effect). For swimming: Remove it (cover must be removed – you can't swim through a cover). Practical: Leave the cover on in the morning (pool heats up), remove it at midday/afternoon (for swimming), put it back on in the evening (retains heat overnight).

Q: How long does the solar film last (lifespan)?
A: 5-7 years (with GeoBubble technology, 25% longer than standard films). Factors: UV radiation (sun slowly destroys material), chlorine concentration (high chlorine content = faster wear), handling (careful handling = longer lifespan).

Q: How do I store solar film (when not in use)?
A: Summer: Use daily (put it on in the morning, take it out for swimming at midday, put it on again in the evening). Winter: Roll it up → store it in a dry place (cellar, garage, pool house) → protect it from direct sunlight (UV radiation ages the material). Do not: Store it folded (creases = stress points = cracks).

Q: Will a solar cover fit my rectangular pool (8 x 4m)?
A: Yes (custom-made). When ordering, please specify the dimensions (length x width, internal dimensions) → the manufacturer will produce the liner exactly to your measurements. Recommendation: Order the liner 5-10 cm smaller than the pool (to prevent rubbing against the walls).

Q: Does solar pool cover also work for saltwater pools?
A: Yes. GeoBubble material is saltwater resistant (no corrosion, no decomposition). Same lifespan as chlorine pools.

Q: Does solar film reduce algae growth?
A: Yes (partially). The cover is slightly opaque (tinted blue-turquoise) → blocks 20% of sunlight → less light reaches the water → algae grow more slowly (algae need light). However: the cover is not completely opaque (like a winter cover) → algae growth is slowed, not stopped. You still need chlorine/algicide.

Q: Can I also use solar film in winter (as a winter cover)?
A: Conditionally. Solar cover protects against dirt (leaves stay out) and reduces evaporation. However, solar cover is not designed for snow loads (500 microns = too thin for heavy snow loads). In heavy snow (Alps, Black Forest): a winter cover is necessary (more robust, can withstand snow). In light snow (Rhine Plain): a solar cover is sufficient (snow should be swept off regularly).

Q: How do I handle solar film (applying/removing)?
A: Small pools (<30 m²): 1 person is sufficient (roll up the liner → lay it out on one side → unroll it over the pool). Large pools (>30 m²): 2 people recommended (each on one side → unroll together). Tip: Buy a roller device (optional, like a roller blind) → the liner stays rolled up at the pool edge → easier to roll up/down.

Secure your free pool heating + water savings now!

If you want to heat your home cost-effectively. If you hate evaporation. If you love hot water – without the electricity bill.

The Sol+Guard pool solar cover is designed for people with unheated pools who want to extend the swimming season and reduce operating costs – and who want to invest in scientifically developed quality.

Free. Effective. Long-lasting.

👉 Order your Sol+Guard (rectangular) pool solar cover now

✓ Water temperature +2-8°C (through solar energy)
✓ Evaporation reduced by 98% (water + heat saved)
✓ GeoBubble technology (25% longer lifespan)
✓ Transparent blue-turquoise (80% light transmission)
✓ 500 micron material thickness (robust)
✓ Swimming season +3 months (April-October)
✓ Dirt control (leaves stay out)
✓ Custom-made (rectangular, to fit your pool)
✓ Zero operating costs (sun = free)

Or would it be better to seek advice first?

👉 Free consultation + measurement request

✓ Non-binding
✓ What size fits your pool?
✓ Special shapes possible? (Oval, very large)
✓ Email request for custom dimensions

Cover it with foil. The sun is shining. The pool is getting warm.

The Sol+Guard solar pool cover isn't just "a cover." It's your free pool heater . Your water savings. Your extended swimming season. GeoBubble technology since 1999. Proven in hundreds of thousands of pools worldwide.

Your hot water. Your savings. Your Sol+Guard.

You invested €50,000 in your pool. But you only use it for 3 months (June-August). It sits empty for 9 months. That's a waste.

The Sol+Guard solar pool cover extends your swimming season to 7 months (April-October). You use your pool more = better return on your investment. Plus: zero operating costs (sunlight is free).

Get the Sol+Guard pool solar cover now – and experience how your pool becomes a year-round oasis.

Note: This product is custom-made to your measurements. Please understand that returns/exchanges are not possible for custom-made products.