CAST plastic extrusion

About the Technology

Our microporous film based on PP is mainly used as a functional layer in highly permeable roof membranes. It meets all the requirements associated with this application, the most important of which are: UV resistance, vapor permeability and elasticity.

With the possibility of direct dosing of several refinement additives during the production process such as pigments, UV additives or thermo stabilizers, we can offer products whose parameters will be adjusted to the individual requirements of the customer. We understand how important the quality of our products is, so we have a fully-equipped Quality Control department that monitors every batch of products that leaves our factory 24/7.

Mdm®NT has a machine park that allows us to prepare and deliver individual products according to the specifications or customer requirements (including individual prints, labels or membranes containing an integrated self-stick tape strip at one or both edges - T/TT version).

Roof underlays

Roof membranes with microporous PP film included in the mdm® offer:




mdm® Ventia

A line of products consisting of three-layer, open, diffusible roof membranes with a weight of 95 - 230g/m2 and a thickness of up to 1000 μm. Membranes above the weight of 130g/m2 can be used on fully-boarded roofs and their UV exposure is limited to 3 months (applies to the average annual irradiation in Central-European climates).


Is a family of multilayer diffusion roof membranes used in direct contact with thermal insulation.
The product is characterized by an attractive price, while maintaining good technical parameters. Permissible exposure to UV rays is a period of up to 6 weeks (applies to the annual average irradiation in Central-European climates).

Contact us!

Would you like to know more about our CAST technology?

Would you like to recive detailed information about mdm® NT offer? You have a question about quality of our products? Or maybe you'd like to schedule a meeteng? Please send us your Contact details.