Asphalt blankets for torch application are composed of bitumen and polymers. The main difference between the types of asphalt compounds is the type of polymer that is used:
1) SBS (styrene-butadiene-styrene), SBS provides excellent low temperature flexibility, resistance to mechanical stress and high elasticity of the material. However, it cannot be used in very hot climates on topsheets because the polymer does not provide creep resistance to the material.
2) APP (Atactic Polypropylene), APP provides the compound with excellent resistance to UV rays and stability at high temperatures. Special anti-root additives are added to the bituminous compound to provide resistance to root penetration and ensure reliable protection for green roofs and foundations.
La membrana de TN modificada SBS autoadhesiva ULTRAFLEX SA HDPE está diseñada para la impermeabilización de cimentaciones, soterramientos y estructuras bajo superficie. Gracias a su ligante adhesivo especial en base bitumen, el material puede ser instalado sobre superficies donde la aplicación estándar con soplete está prohibida. Su capa superior de HDPE biorientado le proporciona una mejor resistencia mecánica y de perforación, tanto estática como dinámica, un alto alargamiento y grandes características de estabilidad dimensional.