Sealing systems

For many years Siebert + Knipschild have been specialists in testing plastic sheeting systems. We are prepared to do your quality assurance on building sites all over Germany (refer to: Contact).

Our services for you:

• Building site monitoring

• Materials testing

• Expert opinions


Materials testing

Tensile test

Determination of the tensile properties of the base material of plastic sheeting

Joint strength

Determination of the strength of welding seams

Bending length

Test of the bending length of welding seams


Determination of the density of thermoplastic sample materials

Melt flow rate

Determination of the melt flow rate of PE materials