Vapor retarders for flat roofs
When constructing flat roofs, there are two essential requirements from the relevant regulations and standards: rain protection and fire protection. Since the top layer of a flat roof must be completely waterproof and rainproof, condensation cannot diffuse in or out. For this reason, it is also necessary to prevent moisture from penetrating the roof structure, especially the insulation, from the inside.
In practice, vapor barriers with an sd value of more than 1500 m made of plastic film, bitumen film, or aluminum composite film are used.
For large roof areas (more than 2,500 m² according to DIN 18234), the spread of fire via the roof must also be delayed. The fire load of vapor barriers designed in accordance with standards must not exceed 10,500 kJ/m² and they must be at least normally flammable (building material class E according to DIN EN 13505-1).
CaPlast offers diffusion-tight air and vapor barriers made of multi-layer aluminum composite with extremely tear-resistant fabric reinforcement for this application, which are installed between the reinforced concrete ceiling or trapezoidal profile and the thermal insulation. For easier installation, we can equip the sheets with a self-adhesive layer on the underside on request.
We will be happy to assist you in testing your complete systems for flat roof construction for compatibility with our CaVap Alu vapor retarders.
Configure your vapor retarders individually
At CaPlast, you can tailor functional properties such as sd value, tear and tensile strength, elongation, flame retardancy, weather resistance, and temperature resistance precisely to the desired application and your target functionality. Talk to us about your requirements. We will do our best to find the right solution.
CaPlast offers these various roof products
Vapor Retarders and Vapor Barriers
Individually developed functional films such as vapor barriers, vapor barriers, underlay membranes, roof underlay membranes, and system accessories.
Roofing underlays for pitched roofs
Customized, diffusion-open roof underlays and system accessories such as corners for pitched roofs.
Vapor Barriers for the Flat Roof
We tailor the sd value, tear and tensile strength, fire properties, and weathering resistance to your application.
CaPlast offers these various construction products
Roof products
Individually developed functional films such as vapor retarders, vapor barriers, sarking membranes, underlayments as well as system accessories.
Waterproofing Products
Development of decoupling and sealing membranes as moisture barriers, vapor barrier on floor slabs or or sealing layers in outdoor areas. Last but not least, solutions for concrete protection.
Facade products
Whether closed or rear-ventilated, partially open facade constructions: CaPlast has many years of experience in the field of diffusion-open facade membranes for various applications.
Landscaping & Greenhouses
From light-tight partition wall systems to joint tapes and root protection, CaPlast is the right place for you.
Sewer pipe rehabilitation (CIPP)
The CaPlast Group has many years of expertise in the manufacture of semi-finished products for trenchless sewer rehabilitation.