PREMIUM PYE PV250 S48

Name: PREMIUM PYE PV250 S48
Brand: NEXLER
SKU: W-PAM06-P2K2A-NX1R-0500

Heat-weldable underlayer bituminous felt

Application:

Underlayer in multi-layer roof coverings, terraces and balconies, for any type of substrate
Waterproofing layer on ballasted roofs and under pavements intended for traffic
Waterproofing for underground parts of buildings
Effective vapor barrier layer

Properties:

Resistant to punctures and heavy loads
Double SBS modification
For use in reduced ambient temperatures
Fixed by welding and mechanically

Available packaging:

Type of reinforcement	non-woven polyester
Top finishing	fine-grained
Low temperature flexibility	≤ -25°C
Width	≥ 0,99 m
Straightforwardness	≤ 10 mm per 5 m of roll length
Thickness	(4,8 ± 0,2) mm
Resistance to external fire exposure* *applies to the examined layer systems	B_roof(t₁), B_roof(t₂)
Reaction to fire	class E
Watertightness: waterproof at a pressure	≥ 2 kPa (method A) ≥ 10 kPa (method A) ≥ 60 kPa (method B) ≥ 400 kPa (method B)
Durability: - durability after artificial ageing, watertightness - durability against chemical - after artificial ageing, vapour diffusion - chemicals resistance	≥ 60 kPa (method B) acc. to annex A of the standard EN 13969 4,7E+11 m²·Pa·s/kg ± 50% acc. to annex A of the standard EN 13970
Maximum tensile force: - longitudinal extension - transversal extension	1200 ± 200 N/50 mm (50 ± 15) % 900 ± 200 N/50 mm (50 ± 15) %
Resistance of the joint: - shear strength • longitudinal joint • transversal joint	900 ± 200 N/50 mm 1100 ± 200 N/50 mm
Resistance to tearing: - longitudinal - transversal	350 ± 100 N 350 ± 100 N
Resistance to root penetration	NPD
Resistance to static loading	≥ 15 kg (method A) ≥ 20 kg (method B)
Resistance to impact	≥ 1500 mm (method A)
Dimensional stability	≤ 1%
Permeation of water vapour	4,7E+11 m²·Pa·s/kg ± 25%
Diffusion resistance coefficient S_d	approx. 94 m
Reference document(s)	EN 13707:2004+A2:2009; EN 13969:2004; EN 13969:2004/A1:2006; EN 13970:2004; EN 13970:2004/A1:2006

Making an insulation using bituminous felt should be NEXLER PREMIUM PYE PV250 S48 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 (concrete in an air-dry condition, without any visible traces of moisture or darkening caused by moisture),
- clean substrate (the surface of the concrete is free of loose fractions, dust, oil stains, grease and other impurities),
- smooth substrate (local unevenness and cavities in the surface of concrete do not exceed ± 5 mm),
- even substrate (the gaps between the surface of the substrate and a 4 m long batten placed on the concrete substrate do not exceed 10 mm).
Before welding NEXLER PREMIUM PYE PV250 S48 bituminous felt is recommended to prime concrete substrate with solvent-based bitumen primers for example NEXLER Penetrator G7, or water-based bitumen products for example NEXLER BITFLEX Primer.
The NEXLER PREMIUM PYE PV250 S48 bituminous felt should be welded to a primed substrate made of concrete or galvanised sheet metal. The bituminous felt can also be installed on thermal insulation boards.
Installation of the bituminous felt should be carried out by welding or mechanical fixing. 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. NEXLER PREMIUM PYE PV250 S48 bituminous felt can also be mechanically fixed, with or without a layer of thermal insulation, to a concrete, wooden, or metal substrate. In that case the bituminous felt is fixed with mechanical connectors at the edge of the strip and then welded at the overlaps. 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.