Bituminous sealing consist of a reinforcement
(used for tensile strength and consists for example of glass fibre, glass fabric, non-woven polyester or a metal-plastic composite) and a two-sided bitumen coating
. The surface of the sealing is either sprinkled with gravel
or without coating
(sanded). These sheeting without coating
can only be used as intermediate layers, because just sprinkled sheeting, however, provide protection against UV radiation.
Bituminous sealing is manufactured in a hot bonding process. Formerly this was held by rolling out the roof sheeting in liquefied bitumen
. Today gas burner
are used to warm and melt the bitumen of the sheeting and by that fixing them to the underground. This can either be another layer of bitumen sheeting or also a concrete ceiling covered with bituminous Primer
. A new development is the use of cold adhesive bitumen sheets
. Roofs made of bituminous sealing must be made as multi-layer, so usually consist of at least 2 layers of bitumen sheets.
A selection of reference projects for bituminous sealing made by the oeserdach group can be found in the following Gallery