Screed on separation layer

According to their type of production, screeds are divided into construction site screeds and prefabricated screeds.

In contrast to precast screeds, construction site screeds are produced on site, using screed mortar - which is mixed on the construction site or delivered in the form of dry or fresh mortar - or mastic asphalt. They are designed heated or unheated and are divided into composite screeds, screeds on separation layer and floating screeds according to their structure. Construction site screeds either serve as a substrate for the final floor covering or, as a so-called useful screed, represent the finished floor surface itself.

CT - Cement screed

CTF - Cement flowing screed

SR - Synthetic resin screed

MA - Magnesia screed

CA - Calcium sulphate screed

CAF - Calcium sulphate flowing screed

AS - Mastic asphalt screed

In contrast to construction site screeds,prefabricated screeds, also known as dry screeds, are delivered to the construction site and laid as finished slabs. The elimination of the drying phase on the construction site leads to a much faster readiness for covering and no larger quantities of moisture are introduced into the building. Lower construction heights than with construction site screeds are also possible. Prefabricated screeds can also be combined with underfloor heating in some cases. As a rule, they are the substrate for the final floor covering, but there are also products that can serve as a finished floor surface themselves.

In addition to the classification of construction site screeds according to their binder according to the above table, they are also differentiated according to DIN 18560 according to their type of installation:

Screed/ Heated screed on insulation layer (floating screed) according to DIN 18560-2:

Composite

screed according to DIN 18560-3:

Screed on separation layer according to DIN 18560-4:

Source: bauwion