How to produce clay roof tiles (Part one)
How to produce clay roof tiles (Part one)
Raw materials management
The first phase involves the extraction of clay, the main raw material for bricks, in an environmentally
compatible process and transportation to a nearby plant for processing.Wienerberger is dedicated to restore
former clay mining sites.
Clay pits that are no longer used are returned to serve as a habitat for flora and fauna or create a natural
recreation area for local residents, or are restored for use by agriculture or forestry businesses.
Preparation of Clay
The clay is prepared and made workable in a second step by grinding, mixing, wetting and cleaning to remove
foreign materials such as stones. Additives (e.g. sawdust) are then added before further production. Technical
progress now makes it possible for us to use lower quality clay that was formerly disregarded as residue.
Shaping
This step involves the actual shaping of the roof tile, where either the prepared clayis pressed through dies
by extruders or pressed into forms and made into pressed tiles. Our in-house die and form manufacturing allows
us to develop our own special tile forms and die forms, which represent the basis for innovative products with
new shapes as well as optimized product features.