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Requirements for a swimming pool roof with variable outside temperatures

Thermal building envelope for swimming pools

Roger Weihrauch

ProductsExpert knowledge

Requirements for a swimming pool roof with variable outside temperatures

In swimming pools, unusual architecture can provide special bathing fun. However, it is not only a question of unique architecture, but also of the right construction. Because with swimming pools special conditions have to be met in the construction of the building envelope. A thermal building envelope is required, which plays a central role in addition to the system and building technology - especially on the swimming pool roof.

What requirements does a thermal building envelope in swimming pools have to meet?

Swimming pools have increased requirements - especially in the area of ​​plant and building technology, but also in the area of ​​building physics. The building has to be kept warm in winter and cool in summer - so that it doesn't get “too tropical” for bathing fun. In other words, the thermal building envelope is another essential concept in addition to the system technology with ventilation.

In addition, there is the fact that a swimming pool is subject to high hygric loads - i.e. a permanently increased indoor temperature combined with high humidity. The requirements for the building envelope - and especially for the swimming pool roof - are particularly high in winter. Extremely low U-values ​​of the thermal building envelope (roof and facade construction) are therefore of great importance.

How can this be implemented and which options of the superstructures are suitable for this?

The roof structure should consist of a material on the inside (on the primary side exposed to heat and moisture) that has a good regulating effect and must not corrode under any circumstances. timber is suitable for this in combination with a structure that is free of and / or has reduced thermal bridges. Alternatively, hybrid structures with a supporting shell as a supporting structure and a suspended ceiling are also suitable for the thermal building envelope.

The swimming pool roof can then be built on top of it, depending on the requirements, with thermal insulation of almost any height and specification. In order to keep the thermal insulation at an almost perfect level, GRP halters are suitable, which are not only passivhouse certified, but also do not represent a significant thermal bridge. Depending on the requirements for summer heat insulation and sound insulation, the insulation can be tread-resistant or soft.

Building materials and construction methods of the thermal building envelope - How do you improve energy consumption?

In the wall or facade, curtain-wall, rear-ventilated constructions offer the highest level of security. This means that conventional supporting structures made of reinforced concrete, masonry or timber structures can be used for the thermal building envelope. In the case of timber, it is particularly important that a functioning vapour barrier is used on the warm side of the insulation, since leaks can quickly lead to damage due to the high level of moisture.

Despite this latent danger with timber, rear ventilation offers extreme safety. Because moisture, which may diffuse through the component, can dry off again and there is no damage to the construction. Here, too, U-values ​​play a central role - above all, effective U-values ​​including punctual or linear thermal bridges. Only then can a swimming pool be operated economically on a long-term and sustainable basis.

Why is a standing seam roof ideal as a swimming pool roof?

For various reasons, a standing seam roof is the ideal roof for the construction of a thermal building envelope:

  • Due to the very low and tested SD value, it brings a significantly higher level of security than, for example, seals.
  • It allows any structures on the roof to be installed sustainably, safely and economically (double security).
  • If there are leaks in the vapour barrier or if they are created during installation, some of the moisture can still diffuse out through the upstands of the standing seam.

There is also another point: Regardless of whether it is photovoltaic, solar thermal or snow guard - everything can be set up and permanently attached without a single penetration. This creates a functioning roof system from the inside to the outside and from the outside to the inside.

Which facade claddings are suitable for a VHF construction?

After the high humidity is extracted via exhaust air systems, you should primarily pay attention to the suitable materials in the area of ​​the air outlets. Accordingly, durable materials such as stainless steel or aluminum should be used in these areas. The cladding can, for example, be an aluminum composite panel (attached visibly or invisibly). Alternatively, special panels or sidings can also be used - perforated or closed over a large area, depending on the architecture or design. It is important that the rear ventilation and the connections used work.

Discover Inspiration for thermal building envelopes in our projects

At BEMO you will find the specialists for the thermal building envelope. In many projects, BEMO shows that every challenge can be mastered - with expertise in sustainable facades and roofs. Convince yourself with our current projects:

Leingarten indoor swimming pool
Leingarten indoor swimming pool
Leingarten indoor swimming pool
Leingarten indoor swimming pool
Leingarten indoor swimming pool
Leingarten indoor swimming pool
Germany

Photo: Roland Halbe

Architecture:
KTP Architects
Product:
BEMO standing seam, BEMO-BOND, BEMO-SMOOTH, BEMO-TEKOFIX-A ++
Material:
Aluminium
External Surface:
BEMO-FLON
Colour:
RAL 9006
Surface:
approx. 1,200 m²
Particularity:
Cambered standing seam sheets with BEMO-SMOOTH.
Nautiland adventure pool
Nautiland adventure pool
Nautiland adventure pool
Nautiland adventure pool
Nautiland adventure pool
Nautiland adventure pool
Nautiland adventure pool
Nautiland adventure pool
Germany
Architecture:
Fritz Planning GmbH
Product:
BEMO standing seam + BEMO-BOND INVISIO
Material:
Aluminium
External Surface:
BEMO-FLON
Colour:
gold
Particularity:
Large-format BEMO-BOND INVISIO panels, perforated elements, substructure free of thermal bridges.
Waterworld, Langenhagen
Waterworld, Langenhagen
Waterworld, Langenhagen
Waterworld, Langenhagen
Waterworld, Langenhagen
Waterworld, Langenhagen
Germany

Photo: Claus Kirsch/vor-ort-foto.de

Product:
BEMO-BOND + Standing Seam N65-400
Material:
Aluminium
External Surface:
BEMO-FLON, PE
Colour:
Similar to RAL 9010
Surface:
560 sqm BEMO-BOND, 2.000 sqm Standing Seam
Particularity:
Roof and facade in one colour.
Błonie Sports Center
Błonie Sports Center
Błonie Sports Center
Błonie Sports Center
Błonie Sports Center
Błonie Sports Center
Błonie Sports Center
Poland
Architecture:
ALSTAL Grupa Budowlana Sp. Z o.o.
Product:
BEMO-MONRO
Material:
Aluminium
External Surface:
Coated PE
Colour:
RAL9006
Surface:
2.700 sqm
Particularity:
MONRO panels curved concave and convex.
Neckarbad Villingen-Schwenningen
Neckarbad Villingen-Schwenningen
Neckarbad Villingen-Schwenningen
Neckarbad Villingen-Schwenningen
Neckarbad Villingen-Schwenningen
Neckarbad Villingen-Schwenningen
Germany

Photo: Michael Kienzler

Product:
BEMO standing seam
Material:
Aluminium
External Surface:
stucco
Surface:
approx. 1,500 m²
Particularity:
Conical roof with conically shaped standing seam panels.

Nothing should stand in the way of your thermal building envelope: We will find the right solution with you. Contact us! We clarify your questions, advise you comprehensively and support you as experts for individual project solutions for building envelopes.

Roger Weihrauch

About the Author

As a sales manager in project sales at BEMO Systems, the synergetic problem solution is the top priority for Roger Weihrauch: With passion and expert knowledge, unique architectural projects are realized around the globe!