ULTIMAX PYE PV 45H

Heat-weldable top layer bituminous felt

Application:

Top layer in multi-layer roof coverings, terraces and balconies

Properties:

It has a strong and durable reinforcement
Fixed by welding

Type of reinforcement	non-woven polyester reinforced with glass fibres
Top finishing	fine-grained
Low temperature flexibility	≤ -10°C
Width	≥ 0,99 m
Straightforwardness	≤ 15 mm per 7,5 m roll length
Basis weight	(4,5 ± 0,25) kg/m²
Resistance to external fire exposure* *applies to the examined layer systems	B_roof(t₁)
Reaction to fire	class E
Watertightness: waterproof at a pressure	≥ 10 kPa (method A)
Maximum tensile force: - longitudinal extension - transversal extension	600 ± 250 N/50 mm (40 ± 20) % 400 ± 200 N/50 mm (50 ± 20) %
Dimensional stability	≤ 0,5%
Durability: flow resistance at elevated temperature	(90 ± 10)˚C
Reference document(s)	EN 13707:2004+A2:2009

Making an insulation using NEXLER ULTIMAX PYE PV 45H 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.
In addition, 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 ULTIMAX PYE PV 45H bituminous felt it is recommended to prime old bitumen layers or concrete substrate with water-based bitumen products for example NEXLER BITFLEX Primer, or solvent-based bitumen primers for example NEXLER Penetrator G7.
NEXLER ULTIMAX PYE PV 50 bituminous felt should be fixed by welding to a primed concrete substrate or metal substrate. The bituminous felt can also be installed on thermal insulation boards. The installation of the bituminous felt should be carried out by welding to the primed old bituminous felt covering or to the previously installed underlayer bituminous felt. 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 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.