Bitumen waterproofing PGR-ro Lybra 4.5kg gray spread GENERAL MEMBRANE

Elastomeric bitumen waterproofing membranes LYBRA P GR (Mineral) are made from high-quality distilled bitumen, modified with special thermoplastic polymers - styrene-butadiene-styrene (SBS) and a selectively selected stabilizing filler. The specific SBS formula guarantees exceptional elasticity, resistance to thermal aging and prevents the appearance of cracks in the waterproofing system. The product functions perfectly at low temperatures in cold climate zones and withstands serious structural loads and deformations.

Unlike the standard series, the Lybra P GR modification has a finishing top layer of mineral gray powder. It provides a reliable long-term barrier against the destructive effects of UV rays and weathering, allowing the membrane to remain exposed to direct sunlight without the need for additional protection (such as tiles or gravel).

To achieve maximum mechanical strength and dimensional stability, the membrane reinforcement consists of a composite non-woven polyester, longitudinally stabilized with reinforced glass fiber threads. This composition provides excellent isotropic behavior, prevents shrinkage or wrinkling and guarantees a long service life of the roof.

Purpose

• Construction of a finishing (top) layer in multi-layer roof waterproofing systems
• Repair and renovation of old roof coverings exposed to direct sunlight
• Waterproofing of flat and pitched roofs of residential, industrial and public buildings
• Ideal for laying on structures subject to serious temperature amplitudes and deformations

Main advantages

• Factory UV protection: The mineral gray coating protects the bitumen from aging under the sun's rays
• Excellent cold resistance: Remains fully flexible at temperatures down to -15°C, reducing the risk of cracking in winter
• Superior elasticity: SBS modification allows the membrane to follow the movements and expansions of the building without tearing
• High mechanical strength: The polyester braid, reinforced with fiberglass, prevents tearing and deformation
• Safe and easy installation: The special side edge without filling guarantees excellent overlap and water tightness when flame welding.

Technical characteristics

• Type: elastomeric bitumen waterproofing membrane with mineral protection
• Series: Lybra P GR 4.5 kg
• Base: modified distilled bitumen
• Modifier: styrene-butadiene-styrene (SBS)
• Reinforcement: non-woven polyester, stabilized with glass fiber threads
• Finishing top coat: mineral gray powder coat
• Bottom layer: thermo-meltable polyethylene film
• Density (Weight per sq.m.): 4.5 kg/m²
• Roll weight: 45.0 kg (10 m² x 4.5 kg/m²)
• Roll size: 1 x 10 m
• Roll area: 10 m²
• Flexibility at low temperatures (bendability): up to -15°C
• Heat resistance: up to +100°C shape stability when heated
• Application: top exposed layer in roof waterproofing systems