TOP S42 SP

Name: TOP S42 SP
Brand: NEXLER
SKU: W-PAM05-W4D2A-NX1R-0500

Nox Cut technology top self-adhesive bituminous felt

Application:

Top layer in multi-layer roof coverings and terraces
Single-layer renovation of old bitumen coverings
Single-layer insulation of pitched roofs and uninsulated balconies

Properties:

Removes toxic nitrogen oxides from the air
Double SBS modification
Durable and puncture-resistant
Excellent self-adhesive properties
Does not require the use of a burner

Available packaging:

Type of reinforcement	non-woven polyester reinforced with glass fibers
Top finishing	coarse grained
Low temperature flexibility	≤ -20°C
Width	≥ 0,99 m
Straightforwardness	≤ 10 mm per 5 m roll length
Thickness	(4,2 ± 0,2) mm
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	1000 ± 250 N/50 mm (50 ± 15) % 750 ± 250 N/50 mm (50 ± 15) %
Reference document(s)	EN 13707:2004+A2:2009
Resistance to root penetration	NPD
Resistance to static loading	≥ 10 kg (method A)
Resistance to impact	≥ 800 mm (method A)
Resistance to tearing: - longitudinal - transversal	350 ± 150 N 400 ± 150 N
Resistance of the joint : - shear strength • longitudinal joint • transversal joint - tear off strength • longitudinal joint • transversal joint	750 ± 250 N/50 mm 1000 ± 300 N/50 mm 150 ± 100 N/50 mm 150 ± 100 N/50 mm
Dimensional stability	≤ 0,3%
Durability: flow resistance at elevated temperature	(100 ± 10)°C

Making an insulation using NEXLER Top S42 SP 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 optimum installation temperature of self-adhesive bituminous felt is in the range of 15°C ÷ 28°C. Installation at lower ambient temperatures, above 5°C, is permissible, provided that the entire underside of the bituminous felt is heated using air heaters or a small burner to obtain self-adhesive properties of the felt. Full adhesion to the substrate depends on the temperature and usually occurs 2 - 3 days after installation.
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),
- roof slope inclination min. 1%.
Before installing NEXLER Top S42 SP bituminous felt on old bituminous covering, concrete or OSB boards, it is recommended to prime the substrate with solvent-based asphalt agents, e.g. NEXLER Penetrator G7, or a water-based asphalt preparation, e.g. NEXLER BITFLEX Primer.
NEXLER Top S42 SP bituminous felt should be attached to the substrate by gluing using the self-adhesive properties of the bituminous felt. On small sloping and pitched roofs, the bituminous felt can be installed in one layer on an impregnated OSB boards or old bituminous felt covering, while on unimpregnated planks, the bituminous felt should be installed using additional mechanical fastening.
Surfaces to which the felt will be bonded must be dry. Once the roll has been unrolled, place it carefully in the space provided for it and cut off an appropriate section of the felt if necessary. Then remove the foil protecting the underside by pulling it simultaneously from both sides of the strip and at the same time pressing and levelling the surface of the felt after removing the foil.
NEXLER Top S42 SP bituminous felt can be mechanically attached to a concrete or wooden substrate. Application on concrete substrate should be carried out after the priming agent has completely dried (or cured). In that case the bituminous felt is fixed with mechanical connectors at the edge of the strip and then thermally activated at the overlaps. The longitudinal overlap of the bituminous felt is connected using self-adhesive properties of the felt after removing the anti-adhesive spacer strip and should be at least 8 cm wide. Overlaps on the transverse joint and other overlaps with grit on the lower layer of the roofing felt should be at least 12 cm wide. They should be made using a heater or a small burner by melting the grit on the bottom layer of the overlap or levelling the grit surface using a repair and sealing compound, e.g. NEXLER Arbolex Aqua Stop. In the case of self-adhesive bituminous felts, it is not necessary for the melted bitumen to flow out onto the overlaps. When making elevations on vertical surfaces, additionally heat the underside of the bituminous felt using an air heater or a small burner. In places where the bituminous felt transitions from horizontal to vertical surface, use a polystyrene or hard mineral wool wedge. The upper edge of the bituminous felt on vertical elements must be fixed with a pressing strip and sealed with a roofing sealant, e.g. NEXLER Bitumen Roofing Sealant. Do not leave the bituminous felt edges unprotected against water. Seal the unprotected edges on the side of the water inflow using a roofing repair and sealing compound, e.g. NEXLER Arbolex Aqua Stop. This applies to construction work that cannot be completed within one day.
Details of substrate preparation and bituminous felt fixing are described in NEXLER Insulation Systems.
Before use, please read the application details in the product's Technical Data Sheet.

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