DOBAU®-Dampfsperrbahn BLR Gelege

Name: DOBAU®-Dampfsperrbahn BLR Gelege
Brand: DOBAU
SKU: dobau-dampfsperrbahn-blr-gelege

Cold self-adhesive, fire load-reduced bitumen vapour barrier membrane according to DIN EN 13970/ DIN 18234 with aluminum-glass fabric

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Description

Cold self-adhesive, fire load-reduced bitumen vapor barrier membrane in accordance with DIN EN 13970/DIN 18234, specially designed for flat roofs. The special aluminum-glass fabric increases the tear resistance.

Technical standards: DIN EN 13970, DIN 18234

Advantages

Reduced fire load
Very high tear and step resistance
Very thin
Easy to process
Cold self-adhesive
Good processability at low temperatures
Solvent-free
Solid
Vapor-tight (sd value > 1500 m)

Available packaging

1 roll = 1.08 m × 25 m = 27 m², thickness: 0.5 mm (± 0.05 mm)

Downloads

Technical datasheet

Download PDF file

Technical info

Application instructions

Application

The substrate must be dry, abrasion-resistant, and free of grease and dust. If the substrate meets these requirements, DOBAU®-Dampfsperrbahn BLR Gelege can be laid over the entire surface straight and rolled. The overlap area must be 8 cm. Longitudinal seam overlaps must be glued over the entire surface by pressing down with body weight or a pressure roller. Especially at cross seams, ensure the underlying web is tightly stretched to avoid sagging — pressing overlaps with a rubber slider is not sufficient. The insulation can be applied mechanically or by bonding with a polyurethane liquid adhesive. For problematic, rough or absorbent substrates, prime the entire surface with DOBAU®-Primer for bitumen tapes or COLZUMIX®-Haftgrund; apply the membrane after flash-off. No primer is required for plastic-coated, painted or unpainted trapezoidal steel profiles.

Material consumption

1.08 m per m² with 8 cm overlap

Storage

Min. 12 months shelf life if unopened in the original carton. Protect from direct sunlight, keep cool and dry. To ensure optimum adhesion even in the cold season, store rolls in a frost-protected room and remove only shortly before use.

Technical data

Carrier film	Adhesion-optimised, scrim-reinforced aluminium composite film
Fire behaviour	Class E (DIN EN 13501-1)
Heating value	< 10,500 kJ/m²
Maximum tensile force	> 800 N/50 mm
Expansion lengthways/crossways	> 2 % (DIN EN 12311-1)
Cold bending behaviour	< -20 °C (DIN EN 1109)
Watertightness	passed (DIN EN 1928)
Ageing resistance	passed (DIN EN 1296 / DIN EN 1931)
Impact load	passed (DIN EN 12691)
Water vapour permeability	sd value > 1500 m (DIN EN 1931)
Application temperature	-5 °C to +30 °C
Substrate temperature	+5 °C to +25 °C
Thickness	approx. 0.5 mm
Width	1.08 m
Length (standard)	25 m