HYDROZOL® НВМ PRO (SBS-STP) - Hydro insulation membrane from SBS modified bitumen covered with mineral slate and reinforced with fiberglass fabric

Hydro insulation membrane from SBS-Premium modified bitumen covered with mineral slate and reinforced with fiberglass fabric, extremely strong and resistant to tear and puncture in wide operating temperature range : from -25°C to +100°C


- excellent elasticity in both low and high temperatures (-25°C to +100°C);

- for hydro insulation of constructions subjected to excessive motions, vibrations and dilatations;

- SBS-Premium modification of the bitumen;

- high strength, resistance to tear and puncture, and dimensional stability; 

- excellent properties in a corrosive surrounding (acids, bases, salts, industrial gases and others);

- high resistance to UV rays and aging; 




Scope of use

HYDROZOL® HBM PRO (SBS-STP) is a highly resistant hydro insulation membrane which consists of both sides layered  bitumen on a fiberglass fabric reinforcement. The SBS-Premium high modification of bitumen with elastomeric polymers provides excellent low-temperature flexibility. It also guarantees long-term durability (25 years) and resistance to aging at extreme operating temperature range (from -25°C to +100°C) without being influenced by frequent and abrupt change in ambient temperature.

The fiberglass reinforcement significantly improves physical- mechanical properties of the membrane as it increase its strength and resistance to tear and puncture. Even when the membrane is cut or torn off the reinforcement keep the membrane intact and prevent its further damage. The fiberglass fabric embedded in the membrane also determines its dimensional stability at both low and high temperatures. It also guarantees the preservation of the initial form of the hydro insulating membrane at great stresses and temperature changes in the environment.

HYDROZOL® HBM PRO (SBS-STP) is used as single-layer hydro insulation or as a finishing layer in a multilayered hydro insulation (over bituminous membrane without slate) of flat and inclined roofs. It is suitable for  subterranean and  dynamically loaded hydro insulations (canals, tunnels, parking areas, bridges and others). It is recommended for hydro insulation of constructions subject to cyclic movements, vibrations and considerable dimension change.

The membranes are covered with colored mineral slates (grey, green or red), and from the lower side – with polyethylene film. The mineral slates protect the membrane from mechanical and external atmospheric conditions, especially from aging caused by UV rays. The polyethylene film preserves the adhesive properties of the lower part of the roll. 

Longitudinally, from one of the sides, the membrane has a 8 cm – strip without slate which is meant to be the overlapping area when applying. No adhesives are necessary since the application of the membrane is performed by torch heating.

If used properly, the product has minimum 25 years of service life.



Complies with the requirements of European and Bulgarian standards and measures up to:

European Standard
EN 13 707
EN 13 969


Indicative consumption

1,09 m² per 1 m² surface



Roll 10 m² with weight 4,5 kg/m²
Roll 10 m² with weight 5,0 kg/m²
Roll 8 m² with weight 6, kg/m²


Colours of the slate

grey (SBS-STP-S); green (SBS-STP-Z); red (SBS-STP-C)