BITUMINOUS UNDERLAY CONTROL LAYER

BYTUM 1500

The BYTUM 1500 bituminous underlay control layer guarantees a very high mechanical strength, with consequent durability, thanks to its high mass per unit area. Very strong, in the version with double tape it creates a perfect adhesive joint, ensuring a quick installation and a professional sealing.

BYTUM 1500, the resistant and durable bituminous underlay control layer.

This bituminous underlay control layer must be installed on the outside of the roof. It can also be used as a vapour barrier, especially on uneven surfaces such as concrete floors.

Documents

Technical data sheets
Declaration of performance (DOP) Download
Recommendations for installation

BYTUM 1500

CODE description tape H
[m]
L
[m]
A
[m²]
H
[ft]
L
[ft]
A
[sft]
pcs./pallet
BYT1500 BYTUM 1500 - 1 25 25 3' 3 3/8'' 82 269 15
BYTTT1500 BYTUM 1500 TT TT 1 25 25 3' 3 3/8'' 82 269 15

Technical Data
EN 13859-1 EN 13707
national-classifications AT Önorm B4119 E-do nsk
national-classifications CH SIA 232 V.v.o. H > 90mm UD (g)
national-classifications DE ZVDH USB-A UDB-A
national-classifications FR DTU 31.2 E1 Sd3 TR2
national-classifications IT UNI 11564 P SR3 A
BITUMEN B A SED

Property Standard Tested Values USC Conversion
Mass per unit area EN 1849-1 1500 g/m² 4.92 oz/ft²
Thickness EN 1849-2 1,3 mm 51 mil
Water vapour transmission (Sd) EN 1931 120 m 0.029 PERM
Tensile strength MD/CD EN 12311-1 600 / 400 N/50mm 69 / 46 lb/in
Elongation MD/CD EN 12311-1 40 / 40 % -
Resistance to nail tearing MD/CD EN 12310-1 220 / 230 N 49 / 52 lbf
Watertightness EN 1928 class W1 -
Thermal resistance - -40 / 100 °C -40 / 212 °F
Reaction to fire EN 13501-1 class E -
Resistance to penetration of air EN 12114 0 m³/(m²·h·50Pa) 0 cfm/ft² at 50Pa
Thermal conductivity (λ) - 0,2 W/(m·K) 1.39 (BTU·in)/(h·ft²·°F)
Specific heat - 175 J/(kg·K) -
Density - ca. 1300 kg/m³ -
Water vapour resistance factor (μ) - ca. 110000 -
UV stability EN 13859-2 3 months -
Exposure to weather - 3 weeks -
After artificial ageing - watertightness EN 1297 / EN 1928 class W1 -
After artificial ageing - tensile strength MD/CD EN 1297 / EN 12311-1 500 / 300 N/50mm 57 / 34 lb/in
After artificial ageing - elongation EN 1297 / EN 12311-1 40 / 40 % -
Flexibility at low temperatures EN 1109 -20 / °C -4 / °F

Specifications

er sealing.

Composition

TOP LAYER non-woven PP fabric
compound bituminous mixture
REINFORCING LAYER PL fabric
compound bituminous mixture
BOTTOM LAYER non-woven PP fabric