PREMIUM PYE PV 30

Underlayer bituminous felt

Application:

Underlayer in multi-layer roof coverings, terraces and balconies

Properties:

It has a strong and durable reinforcement
Mechanically fastened
Modified with two types of SBS
Compliance with TL2 requirements

Type of reinforcement	non-woven polyester reinforced with glass fibers
Coating on the top side	fine-grained topping
Coating on the bottom side	fine-grained topping
Low temperature flexibility	≤ -25°C
Width	≥ 0,99 m
Straightforwardness	≤ 20 mm per 10 m roll length
Basis weight	3,0 kg/m² ± 5%
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) ≥ 60 kPa (method B) ≥ 300 kPa (method B)
Maximum tensile force: - longitudinal extension - transversal extension	800 ± 200 N/50 mm (50 ± 25) % 600 ± 200 N/50 mm (50 ± 25) %
Resistance to root penetration	NPD
Resistance to static loading	≥ 5 kg (method B)
Resistance to impact	≥ 600 mm (method A)
Resistance to tearing: - longitudinal - transversal	300 ± 100 N 300 ± 100 N
Dimensional stability	≤ 0,6%
Durability: - durability after artificial ageing, watertightness - durability against chemical	≥ 60 kPa (method B) acc. to annex A of standard EN 13969
Durability: flow resistance at elevated temperature	≥ 100°C
Reference document(s)	EN 13707:2004+A2:2009; EN 13969:2004; EN 13969:2004/A1:2006

Making an insulation using NEXLER PREMIUM PYE PV 30 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 (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).
NEXLER PREMIUM PYE PV 30 bituminous felt can be mechanically fixed together with or without thermal insulation to concrete, wood or sheet metal substrates. In this case, the bituminous felt is fastened with mechanical fasteners along the edge of the strip and then welded or bonded with bituminous adhesives at the overlaps. For bonding overlaps, it is recommended to use cold-applied bituminous adhesives, e.g. NEXLER Arbolex Aqua Stop or NEXLER Adhesive for Bituminous Felt and Shingles. 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.
Before use, please read the application details in the product's Technical Data Sheet.