Oase Features Slats

Oase Insulation

The OASE CLASSIC cover profile in PVC has a K-level of 2.65W/m²K.
The OASE CLASSIC cover profile in polycarbonate has a K-level of 2.74W/m²K.

The K-level, also known as U-level or Psi-level, expresses the permeability of warmth from one side of a panel  to the other side and is calculated per hour, per square metre and per degree of temperature difference (between the two sides).
The calculated number is an indication of the level of insulation: a high K-level means a bad insulation.




The OASE CLASSIC slats have a 14 mm thickness which means a good insulation for the swimming pool. It is the air within the slats that creates the insulating effect of the whole cover.






The biggest advantage of OASE DELUXE anti-algae slats is an insulation of the whole surface of the water and the OASE DELUXE anti-algae slats have a thickness of 16 mm resulting in an even better insulation of the water in the pool.

Insulation results in a 25% higher efficiency than OASE CLASSIC profiles.

This explains why there is such a big demand by our customers for the OASE DELUXE anti-algae profile.

Oase Solar Heating

The OASE CLASSIC slats can be delivered in transparent PVC or polycarbonate. Due to its unique hinge the OASE DELUXE (anti-algae) can only be delivered in polycarbonate.

The sun has a glass house effect on the air in the slats which on their turn warms up the water beneath the cover. The black colour on the bottom side of the profile prevents algae growth under the profile. Some algae growth is still possible in the hinge of the slats.




The OASE CLASSIC slats have a good solar heating efficiency.

The OASE DELUXE (anti-algae) is 25% more efficient than OASE CLASSIC slats.

The 4th room in the profile has a warming effect of the whole surface under the profile. Here, the hinge is also protected  from algae growth.

This explains why we have such a high demand from our customers for this OASE DELUXE (anti-algae) profile.

Oase Profiles

The profiles are specially developed for the construction of swimming pool covers.

The shape of the surface of the profile is curved to speed up the removable of water from the slats. This helps to prevent any form of calcification on the profile.

The bottom side of the profile is flat to create maximum support and to let it rest (cool down) on the water.

At the end of the profiles, caps are attached to keep the profiles in place and to help make the profiles more waterproof. This keeps them afloat.

Transparent slats cause a solar effect. Exposed to the sun, the air heats up in the hollow space within the slat profile. This heat then warms up the water underneath in the swimming pool — a sort of greenhouse effect.
The bottom side of the profile is dark-coloured to attract better the heat of the sun and to prevent algae growth. Photosynthesis (light and heat) is the main cause of algae growth. On sunny days a profile with solar effect can heat up the swimming pool water up to 4 degree Celsius.

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Oase Hinges

Oase Anti-Algae

Lamellen ProfielenAnti-algae hinge (OASE DELUXE) because the surface of the hook is dark coloured.
The contact surface with the water is optimal.

Oase Safety

Lamellen ProfielenSecurity hinge because it can only turn one way.
When a weight falls on the profile, it does not bend.

The profile is offered with an extraordinary width of 83 mm and a thickness of 16 mm.

Oase Flexibility

Lamellen ProfielenA flexible hinge because it can turn both ways.
When a weight falls on the profile, it will bend more.
This profile has only a width of 60 mm and a thickness of 14 mm.


Hinges made from elastic PVC can easily tear apart and can become porous in time because of the effects of the water and the used chemicals.
The use of softeners minimizes the UV durability of a flexible PVC profile compared to a profile made of a hard PVC material.
These hinges are very sensitive to warmth.

Oase Safety


For safety against drowning we always advise to place handrails or a safety support under the pool cover (minimum 100 mm on both sides of the pool).

In case of a submersion of the pool cover the handrails or the safety will support the slats of the cover.


It is necessary to put different locks at the front of the pool cover to prevent that children can push back the slats of the cover and to create more supporting power at the front ends of the swimming pool.



For more security OASE automatic pool covers offers a special type of slat with a width of 83 mmm (instead of the standard 60 mm). This type of slat creates of course an optimal floating for the pool cover.



The OASE DELUXE (anti-algae) slats are also equipped with a special security hinge. The slat can only turn one way and this type of hinge also adds to the floating of the cover.

VeiligheidWe advise customers to put a winter debris cover over the pool during winter. The cold temperature during the winter can make the slats of the cover porous and this cloth will protect them from the harsh winter condition.


According to French Regulations (Des Normes Françaises) a pool cover can be safe, only for a certain restricted installation types of cover, without a handrail or safety support.

In this case, the slats must be made of a material that is approved by a French licensing authority. On demand we can deliver our 60 mm and 83 mm slats in that specific material. Also with the NF, it is important that the pool cover is equipped with a front lock.

Never forget: The pool cover cannot replace the responsibility of an adult watching the safety of children!

Oase Maintenance

The cover should not be exposed to direct sunlight when it is not in contact with the pool water. This is especially important with transparent or solar covers as the material can act like a magnifying glass and can cause heat damage or distortion to the slats.

By avoiding any unnecessary weights (e.g. throwing or placing subjects on the cover), the durability of the pool cover can be extended.

In winter you can either leave the cover over the pool or leave it rolled up in the pit or on the above ground roller. When the cover has been rolled up for a long period, or left over the pool, say for the winter, ensure there are no leaves, twigs or other debris that may become trapped in between the slats. Clean all debris off before operating, as this could cause malfunction or damage.
Before emptying the swimming pool, ensure the cover is rolled off the pool and onto the roller. Ensure the cover is not exposed to direct sunlight (see first paragraph). If the pit is to be emptied, ensure the leading edge slats do not fall behind the roller. To prevent this it is good practice to stop the cover slightly short of normal operation retraction to ensure the leading edge stays forward. Always check position of leading edge after refilling pit/pool, before operating the motor.

Obviously, one cannot skate on a frozen rolled out pool cover nor can the pool cover be put into use while there lays still ice on the cover.

Lamellen ProfielenIn the early days, we received some complaints from customers about the growth of algae in the hinges of their pool covers, especially when a transparent cover was involved. For Oase, it was a supreme challenge to prevent algae growth between the hinges of the cover — and of course we met that challenge!

So now OASE automatic pool covers offer the ideal solution for you !!
The OASE DELUXE anti-algae profile inhibits algae growth in between the hinges of the cover. The hinge prevents any light penetration and because of that also the growth of algae.

The above colours are displayed printing technology, and may be different from the actual colours.