Advisor

Composite screed

If thermal or sound insulation is not the primary concern, then bonded screed is recommended as the simplest option: we apply the screed directly to the ceiling of the building shell - we then usually use cement screed. This gives us a floor that can withstand high static loads, which is useful in garages, cellars or workshops, for example. The layered floor should not be less than 30 mm, which limits the possible applications.

Important: The unfinished floor should be open-pored, clean and damp. We take care of expansion joints in the screed.

Screed on separating layer

This variant is also known as a sliding screed or screed on a separating layer and is also recommended where thermal and sound insulation is not important, such as on terraces, in basements or on balconies. In these cases, we can use different types of screed, as it is irrelevant whether the material is optimally compatible with the bare floor: We use a PE film or a bitumen sheet, but can also incorporate a barrier layer to protect against moisture in order to separate the components from each other. The layer thickness must be at least 35 mm for cement screed and 30 mm for calcium sulphate screed, which makes it impossible to install heating systems. Screed on a separating layer proves to be less resilient than bonded screed.

Important: We install separating layers and moisture barriers strictly in accordance with the manufacturer's instructions in order to effectively prevent subsequent damage.

Floating screed

The term screed on an insulating layer would be more accurate, as the screed layer is decoupled from all other components such as the bare ceiling, bare floor or walls. We therefore produce a freely movable screed slab that rests on fills and/or insulation boards. In this way, we achieve comfortable thermal and sound insulation - and the optimum conditions for installing heating systems. If required, we can add additional reinforcement to the building material, such as reinforcing fibers or screed mats, to improve crack resistance and load-bearing capacity. In our experience, this manageable effort pays off, especially if the floor is to be covered with stoneware or tiles later on. We can use different types of screed here; we usually use calcium sulphate screed indoors and cement screed for outdoor or wet areas.

Important: To create a floating screed, we ensure strict separation from other components, especially with self-levelling flowing screed - the resulting thermal and sound bridges would negate the advantages of this variant.

Heated screed

This is the most complex variant, but proves to be multifunctional: The heating screed is also built on an insulating layer, but the heating pipes are inserted before the screed is laid. In order to achieve efficient heat transfer, we recommend flowing screeds in particular, which best enclose the heating coils. As we can realize the highest layer ceilings of 40 to 60 mm with a floating screed, this is the most suitable variant. If it is necessary for structural reasons, which is extremely rare, we can embed the heating coils in a leveling screed. We then apply a second screed on top of this layer, resulting in a floating screed.

Important: The heating elements must not exceed an average temperature of 55 degrees during operation in order not to impair the quality of the screed.

As specialists in screed, we are of course familiar with the different variants - both in terms of composition and installation methods. We would be happy to put our profound expertise at your disposal, just give us a call and arrange an appointment with us - we will be happy to take care of your request.