The BG PLAST company provides complete lines for the production of roof membranes of various types made in the coating and lamination technology. Thanks to its many years of experience, the company produces lines for roof membranes made of various materials, including PP and PES nonwovens, coated with the extrusion method and the method of applying water-based and solvent-based coatings that require drying and curing.
Roof membranes
In modern roof constructions, vapor barrier films and vapor-permeable membranes (undercoating films) are commonly used, which together form complete roof systems that allow to regulate the flow of moisture and protect the structure against the effects of weather conditions.
Vapor barrier membranes
A vapor barrier is a layer of plastic foil that prevents moisture from entering the wall or ceiling structure from inside the house, which may result in its
dampness.There are many types of films on the market and the so-called vapor barrier screens that differ in construction and purpose. They also have very different operational parameters. Examples of vapor barrier films produced on BG PLAST lines: • traditional films made of polyethylene or polypropylene • films made of polyethylene or polypropylene laminated with a mesh, • foils with a metallized coating, most often aluminum, which causes the heat to reflect back inside, • thermal insulation screens, i.e. composite foils composed of alternating layers of aluminum foil and bubble foil or polyethylene foam • foils with a variable level of diffusion resistance, the so-called active ones, enabling a change in the direction of water vapor flow depending on the season.
Vapor-permeable membranes
The vapor-permeable membrane is placed under the final roof covering, above the thermal insulation layer. It has a dual function. It protects the roof against rainwater and snow blown by the wind, condensation formed on the underside of the roof, and possible leaks. In addition, as a vapor-permeable layer, it allows the moisture, that can always be found in the roof, to evaporate to the outside. Depending on the method of roof ventilation, films with low vapor permeability or highly vapor permeable roof membranes are used. • membranes made of non-woven of polypropylene PP and polyester PES, including single and multi-layer • membranes with a functional layer in the form of a PP, TPU film and others • membranes with additional functional layers in the form of aluminum foil, reinforcing mesh, etc.
info@bgplast.it
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