PREMIUM PYE PV250 S56H

Heat weldable top layer bitumen membrane

Application:

Top layer in multi-layer roof coverings, terraces, and balconies
For every type of substrate
Waterproofing layer on ballasted roofs and under pavements intended for traffic
Single-layer renovation of bitumen coverings

Properties:

Durable and puncture-resistant
Double SBS modification
For use in reduced ambient temperatures
Fixed by welding

Available packaging:

Type of reinforcement	non-woven polyester
Top finishing	coarse grained
Low temperature flexibility	≤ -25°C
Width	≥ 0,99 m
Straightforwardness	≤ 10 mm per 5 m of roll length
Resistance to external fire exposure* *applies to the examined layer systems	B_roof(t₁), B_roof(t₂), B_roof(t₃)
Reaction to fire	class E
Watertightness: waterproof at a pressure	≥ 10 kPa (method A) ≥ 400 kPa (method B)
Maximum tensile force: - longitudinal extension - transversal extension	1200 ± 200 N/50 mm (60 ± 15) % 900 ± 200 N/50 mm (60 ± 15) %
Resistance to root penetration	NPD
Dimensional stability	≤ 1%
Durability: flow resistance at elevated temperature	(100 ± 10)°C
Reference document(s)	EN 13707:2004+A2:2009

Making an insulation using NEXLER PREMIUM PYE PV250 S56H bituminous felt should be carried out according to the technical design, in accordance with the current building regulations and the detailed guidelines for the design and execution of insulation contained in NEXLER Insulation Systems and the Technical Data Sheet.
The bituminous felt should be installed in ambient temperatures of above 0°C, this requirement applies to the time of day and night.
Do not carry out insulation work during strong winds and precipitation.
The substrate should meet the following requirements:
- dry substrate (no visible traces of moisture or darkening caused by moisture),
- clean substrate (the surface is free of dust, oil stains, grease and other contaminants),
- smooth substrate (local unevenness and cavities in the surface do not exceed ± 5 mm),
- even substrate (the gaps between the surface of the substrate and a 4 m long patch placed on the concrete substrate do not exceed 10 mm),
- roof slope inclination min. 1%.
Before welding NEXLER PREMIUM PYE PV250 S56H bituminous felt it is recommended to prime old bitumen layers with water-based bitumen products for example NEXLER BITFLEX Primer, or solvent-based bitumen primers for example NEXLER Penetrator G7.
The NEXLER PREMIUM PYE PV250 S56H bituminous felt should be welded to the previously installed underlayer bituminous felt or to the primed old bituminous felt covering. Application should be carried out after the priming agent has completely dried (or cured).
As a result of heating both the substrate and the underside of the bituminous felt with a burner, the thin protective plastic foil melts, the asphalt is slightly melted and the bituminous felt sticks evenly to the substrate. Maintain a bituminous felt overlap min. 8 cm wide along the length of the felt strip and an overlap min. 12 cm wide at the joint perpendicular to the length of the felt strip. An asphalt outflow of approx. 0,5 - 1 cm in width over the entire length of the welded overlap is required.
Before use, please read the application details in the product's Technical Data Sheet.