In contrast to construction site screeds, dry screed, also known as prefabricated screed, consists of prefabricated elements with a base layer of one- or two-layer panels (e.g. made of gypsum or wood-based materials) with stepped rebates. On the underside, an impact sound insulation is often already laminated. Panels with pre-milled recesses are also available to accommodate pipes of underfloor heating.
There are also dry screeds that can be used in domestic damp rooms (toilets and bathrooms in apartments). Dry screeds, on the other hand, are generally unsuitable for wet rooms with slopes and floor drains that are used according to plan, e.g. commercial kitchens, washrooms, saunas and swimming pools.
Dry screeds have particularly high requirements for the flatness of the substrate, which is produced, for example, by means of a levelling fill or filling.
The strengths of dry screed are their quick accessibility, low weight per unit area and low construction height. As a result, and because dry screed does not introduce any additional building moisture into the interior of the building, it is also particularly suitable for renovations in existing buildings.
Source: bauwion
