Use of needle-productive geotextile under PVC membrane for roofing
Using needle-punched geotextile under PVC membrane for roofing
In modern construction, roofing systems using PVC membranes (polyvinyl chloride membranes) have become widespread due to their reliability, durability and ease of installation. One of the important elements in this technology is needle-punched geotextiles, which perform a number of protective and functional tasks.
What is needle punched geotextile?
Needle-punched geotextile is a non-woven material made mainly from polypropylene or polyester fibers. During the production process, the fibers are mechanically interwoven using special needles, which gives the material high strength, flexibility and resistance to mechanical damage.
The role of geotextiles in the roofing system
When installing a PVC membrane roof, geotextiles are usually placed under the membrane, performing several key functions:
Protective function
Geotextiles prevent mechanical damage to the PVC membrane when in contact with an uneven or rough substrate (concrete, insulation, gravel, etc.).
Surface leveling
Helps create a more even base for the membrane, reducing the risk of micro-bursts during roof operation.
Separation layer
Prevents contact of the PVC membrane with incompatible materials (e.g. bitumen), which may negatively affect the durability of the coating.
Drainage and ventilation function
In some cases, geotextiles can partially provide drainage and improve air exchange between the layers of the roofing "pie".
Technical requirements for geotextiles
For effective use under a PVC membrane, geotextiles must meet the following criteria:
density of at least 15-200 g/m²;
high tensile strength;
resistance to chemical influences;
resistance to ultraviolet radiation (if temporary outdoor use is expected);
Compatibility with the membrane - no release of substances that could damage it is allowed.
Benefits of using
The use of geotextiles under a PVC membrane increases the reliability of the roofing system, reduces the risk of leaks and extends the life of the roof. This is a relatively small investment that significantly improves the quality and durability of the entire coating.
Needle-punched geotextiles are an important component in the construction of modern PVC roofing. Their use ensures protection, compatibility and long-term service of the roof, reducing the risk of damage and repair costs in the future. The correct choice and high-quality installation of geotextiles is the key to a reliable roof.
