Termoklej

Name: Termoklej
Brand: NEXLER
SKU: W-PAM13-W2X1A-NX1R-1000

Heat weldable under layer bituminous felt

Application:

Vapour barrier layer on roofs and terraces
Underlayer ventilation bituminous felt

Properties:

Allows for fixing thermal insulation boards to asphalt adhesive strips on the top side
In the inverted version, it provides ventilation for damp roofs
Excellent vapour barrier properties

Available packaging:

10 m

Type of reinforcement	non-woven polyester reinforced with glass fibers
Coating on the top side	asphalt adhesive strips covered with PE foil
Low temperature flexibility	≤ -10°C
Width	≥ 0,99 m
Straightforwardness	≤ 20 mm per 10 m roll length
Thickness	(2,5 ± 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	≥ 2 kPa (method A) ≥ 10 kPa (method A)
Maximum tensile force: - longitudinal extension - transversal extension	600 ± 200 N/50 mm (50 ± 15) % 450 ± 200 N/50 mm (50 ± 15) %
Reference document(s)	EN 13707:2004+A2:2009; EN 13970:2004; EN 13970:2004/A1:2006
Resistance to root penetration	NPD
Resistance to impact	≥ 1000 mm (method A)
Resistance to tearing: - longitudinal - transversal	200 ± 150 N 300 ± 150 N
Resistance of the joint: - shear strength • longitudinal joint • transversal joint	450 ± 250 N/50 mm 600 ± 200 N/50 mm
Dimensional stability	≤ 0,5 %
Permeation of water vapour	1,65E+12 m²·Pa·s/kg ± 25%
Diffusion resistance coefficient S_d	approx. 330 m
Durability: - after artificial ageing, vapour diffusion - chemicals resistance	1,65E+12 m²·Pa·s/kg ± 50% acc. to annex A of the standard EN 13970

Making an insulation using NEXLER Termoklej 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 Termoklej 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.
Fix the NEXLER Termoklej bituminous felt by welding to an old primed bitumen, concrete or galvanised sheet metal substrate. 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.
NEXLER Termoklej bituminous felt has special bitumen strips on the top side covered with PE foil for fixing thermal insulation boards e.g. EPS boards. Immediately before installing the board, heat the top side of NEXLER Termoklej bituminous felt with a torch to the appropriate degree, melting the PE film and bitumen strips, then place thermal insulation board on the substrate and press it down. The heated asphalt compound on the strips will ensure that the boards adhere to the felt.
When using NEXLER Termoklej bituminous felt for a two-layer renovation of an old roof covering, the bituminous felt, as the first layer, should be welded in an inverted position, the felt is bonded to the substrate with melted asphalt from the strips. For damp, impregnated concrete substrate, it is recommended to additionally secure the NEXLER Termoklej bituminous felt with mechanical fasteners with a flat washer at a rate of 3 pcs./m² in addition to welding.
Depending on the degree of dampness, use ventilation chimneys - 1 per 50 - 100 m², then weld a top layer bituminous felt with suitable properties.
Before use, please read the application details in the product's Technical Data Sheet.