Enjoy warmer, cleaner water all season long with a pool bubble cover. This isothermal cover captures the sun’s heat, reduces evaporation and protects your pool from impurities – an investment that quickly pays off for pool owners in Geneva and Vaud.
At Astro Piscines, we sell and install APF Pool Design bubble covers – the best-performing ranges on the French market. Our technicians will visit you free of charge to measure your pool and ensure perfect installation, whatever its shape.
Why choose a bubble cover for your pool?
Heat your water naturally thanks to the greenhouse effect
The bubble cover (or isothermal cover) works like a greenhouse: it lets the sun’s rays through to warm the water, then traps this heat with its thousands of air bubbles. The result: you can gain several degrees of heat naturally, without energy consumption, and extend your swimming season by several weeks.
The RaeGuard range reduces heating costs by up to 57% compared with an uncovered pool.
Reduce evaporation and save water
An open-air pool loses up to 5 mm of water per day through evaporation in summer. The bubble cover forms a watertight barrier that drastically limits this phenomenon. This saves water, reduces the need for top-ups and maintains a stable water level in your pool – particularly appreciated during the hot summers in French-speaking Switzerland.
Limit debris and facilitate daily maintenance
Leaves, insects, pollen, dust… all these debris end up in your pool, putting a strain on the filtration system. By covering your pool when you’re not using it, the bubble cover considerably reduces impurities. Less cleaning, fewer chemicals, and crystal-clear water for longer.
Our APF Pool Design premium bubble covers
We have selected APF Pool Design’s RaeGuard and OXO ranges for their French manufacturing quality, exceptional durability and superior thermal performance. These tarpaulins are made of UV-resistant honeycomb polyethylene, with high-frequency welding.
RaeGuard™: the high-performance novelty (8 seasons)
RaeGuard is our top-of-the-range bubble cover – an APF Pool Design innovation that sets new standards in durability.
- More resistant and rigid than traditional models
- Uniform thickness and smoother surface for longer service life
- Heating costs reduced by up to 57% vs. uncovered pool
- Ideal for indoor pools and spas with easy roll-up feature
- Peanut-shaped bubbles for better insulation
- Color: Grey/white
- 8-season warranty (the longest on the market)
Technical data: Thickness 500 microns – Max. basin size 25 × 7.5 m – Finishes Bul 4, Bul 2, Bul 1, Bul Eco
OXO® translucent: the best heating power (5 seasons)
Patented OXO technology offers superior thermal insulation thanks to a volume of air in the bubbles that is +78% greater than that of a traditional bubble. The translucent design maximizes the passage of sunlight for optimal heating performance.
- Patented OXO bubble design
- Superior heating power (4+ on APF scale)
- Greater insulating power thanks to increased air volume
- Natural UV and chemical resistance
- Improved film stability for longer service life
- Color: Translucent – 5-season summer warranty
OXO® blue: performance-price balance (6 seasons)
The OXO blue model combines patented OXO technology with a classic blue color that blends in perfectly with any pool. It offers an excellent compromise between thermal performance and budget.
- Same patented OXO bubbles as the translucent model
- Good heating power (3+ on APF scale)
- Slight reduction in photosynthesis (fewer algae)
- Color: Blue – 6-season summer warranty
Which pool cover is right for you? Solution comparison
Complete APF Pool Design range comparison
To help you choose, here’s a comparison of all APF Pool Design ranges. At Astro Piscines, we have selected the three best ranges (RaeGuard, OXO translucent, OXO blue) for their durability and superior performance. The other ranges are available in standard sizes from our aquastore.ch store.
🏆 OUR PREMIUM RANGE (sales and installation by Astro Piscines)
| Feature | RaeGuard™ ⭐ | OXO® translucent | OXO® blue |
| Thickness | 500 µ | 500 µ | 500 µ |
| Bubble shape | Peanut | Patented OXO | Patented OXO |
| Heating power | ++++ | ++++ | +++ |
| Resistance | ++++ | +++ | ++++ |
| Algae reduction | ++ | ++ | ++ |
| Colors | Grey/white | Translucent | Blue |
| Warranty | 8 seasons | 5 seasons | 5 seasons |
| Energy class | Class A | Class A | Class A |
| Ideal for | Intensive use, indoor pools, spas | Maximizing solar heating | Versatile use, light anti-algae |
📦 ECONOMICAL RANGES (standard sizes on aquastore.ch)
| Features | Geo Bubble | Sol+Guard | Dark grey | Blue/Black | Blue 500µ | Blue 400µ |
| Thickness | 500 µ | 500 µ | 500 µ | 400 µ | 500 µ | 400 µ |
| Bubble shape | Peanut | Round | Round | Round | Round | Round |
| Heating power | + | +++ | ++ | ++ | + | + |
| Warranty | 6 sais. | 5 sais. | 5 sais. | 2 sais. | 3 sais. | 2 sais. |
| Energy class | D | B | C | D | D | D |
→ See economical tarpaulins at aquastore.ch
Why choose our premium ranges?
- RaeGuard: The only Class A tarpaulin on the market with an 8-season warranty – ideal for a long-term investment.
- OXO translucent/blue: patented bubble technology with +78% air volume for superior thermal insulation
- Full service: measurements, custom cutting (all shapes), professional installation and maintenance advice.
All our premium covers: Max. pool size 25 × 7.5 m – Stairs, blocks and ladders can be cut to size – Protective tarpaulin and sandovans supplied (except Bul Eco) – Made in France by APF Pool Design
Finishes available for your bubble tarpaulin
The finishing touches determine the perimeter reinforcements and the hanging system for your tarpaulin.
Our selection: Bul 4: the complete all-round finish
- Reinforced polyethylene sewn all around the perimeter
- Eyelets every 50 cm on one width + corners
- Compatible with all pond shapes (including round, oval, bean, free-form)
- Protective tarpaulin and sandviles included
Our rollers for bubble tarpaulins
A roll-up cover is essential to protect your bubble cover. It facilitates daily handling and protects the cover from UV rays when it’s not on the water. All our rollers come with a 2-year warranty.
| Model | Prestige low-profile | Prestige | A.Pro 8 |
| Pool width | 3.20 to 4.35 m | 3.70 to 5.10 m | 6.50 to 8 m |
| Max. length | 10 m | 13 m | 16 m |
| Aluminium axle | ø 80 mm | ø 105 mm | ø 130 mm |
| Wheels | 2 wheels ø 200 | 2 wheels ø 200 | 2 inflatable wheels |
| Bungees supplied | 12 | 14 | 18 |
All rewinders: Welded stainless steel brackets ø 40 mm glossy polished finish – Handwheel with turning handle – Braking and locking knob – 2-year warranty
Installation by Astro Piscines
Our turnkey service
Our technicians will take care of thecomplete installation of your bubble tarpaulin and roll-up system:
- Precise measurements of your pool (templates for complex shapes)
- Ordering and production follow-up
- On-site delivery and installation
- Reel adjustment and demonstration
- Evacuation and disposal of your old tarpaulin, if any
- Personalized maintenance advice
Free measurements and templates
We come to Geneva and Vaud free of charge to measure your pool. For complex pool shapes (Form 3: lazy, free-form, bean), we produce a precise template that guarantees a cut perfectly adapted to your pool.
Operating areas: Geneva, Nyon, Lausanne and Vaud
Our teams operate throughout the Lake Geneva region:
- Canton of Geneva: Geneva, Versoix, Meyrin, Carouge, Thônex, Chêne-Bougeries, Collonge-Bellerive, Cologny, Vandœuvres
- La Côte: Nyon, Gland, Rolle, Morges, Aubonne, Coppet, Founex, Tannay
- Canton of Vaud: Lausanne, Pully, Lutry, Vevey, Montreux, Aigle, Yverdon
How to use and care for your bubble tarpaulin
To make the most of your bubble tarpaulin and benefit from the APF guarantee, follow these essential instructions.
Installing and removing the tarpaulin
- Lay the bubble sheet down, with the smooth side facing the sky
- Remove the cover completely before each swim (risk of drowning).
- Remove cover when water temperature exceeds 28°C
- Keep the pool covered in windy conditions or when you’re away (to avoid heat loss).
Storage on reel with protective tarpaulin
- Always roll up the tarpaulin on a winder – never fold it.
- It must be protected with an opaque protective tarpaulin secured by sandovoiles (warranty condition).
- Never place the tarpaulin on the lawn (risk of burns).
- If you don’t have a winder, roll up the tarpaulin (don’t fold it) and store it in the shade after rinsing with clean water.
Water treatment and shock chlorine precautions
⚠️ Be sure to remove the tarpaulin during shock chlorination, and for 48 hours afterwards (risk of damage to bubbles).
Rates to preserve your tarpaulin:
| Parameter | Recommended value |
| pH | 7,0 à 7,6 |
| Free chlorine | 2.0 to 4.0 ppm |
| Combined chlorine | < 0.2 ppm |
| Total bromine | 4.0 to 6.0 ppm |
| Total alkalinity | 80 to 120 ppm |
| Calcium hardness | 150 to 400 ppm |
| Salt (salt pool) | 2500 to 4000 ppm |
A pH too low can compromise the longevity of the cover. Monitor chlorine levels frequently.
Winterizing your bubble tarpaulin
- Remove the bubble wrap in winter – it is not designed to withstand frost.
- Spray clean before storing
- Store frost-free, away from light.
- For winter, use a suitable filtering winter cover
Ready to enjoy a warmer pool?
Our experts will visit you free of charge in Geneva and Vaud to measure your pond and recommend the right bubble cover for your needs. Professional installation and commissioning included.
Call us on 0842 520 520 or request a quote online.
FAQ – Frequently asked questions about swimming pool bubble covers
How many degrees do you gain with a bubble cover?
Depending on the amount of sunshine and the size of the pool, a bubble cover can save 3 to 8°C compared with an open-air pool. The effect is particularly marked at night, when it limits heat loss. The RaeGuard and translucent OXO models offer the best performance thanks to their optimized design.
What’s the difference between RaeGuard and OXO?
RaeGuard is the most durable range (8-season warranty) with a stiffer structure and smoother surface – ideal for intensive use or indoor pools. OXO uses patented bubble technology with +78% air volume for maximum insulation. The translucent OXO model maximizes heating power, while the blue OXO offers good balance and slightly limits algae.
Is it safe to swim with the bubble cover on?
No, absolutely not. The cover must be completely removed before swimming. Do not walk, lie down or swim under the cover – risk of drowning. It is not a safety device like a standard winter cover.
How long does bubble wrap last?
Lifespan depends on the model and compliance with maintenance instructions. RaeGuard is guaranteed for 8 seasons, OXO blue for 6 seasons and OXO translucent for 5 seasons. In practice, with a reel, a protective tarpaulin and balanced water treatment, you can exceed these times. Failure to comply with these instructions (shock chlorination, folding, storage in the sun) will invalidate the warranty.
Do I need a winder for my bubble wrap?
The roll-up system is highly recommended, and is a condition of the APF warranty. It facilitates daily handling (deployment and rolling up in just a few minutes), protects the cover from UV rays thanks to the protective tarpaulin, and prevents creases that damage the bubbles. It’s a profitable investment that considerably extends the life of your cover.