BITUMINOUS UNDERLAY CONTROL LAYER
BYTUM 1100
BYTUM 1100 is the bituminous underlay control layer that represents the first choice among the bitumen-based membranes of the Rothoblaas range, the perfect meeting point between price and performance. Extraordinarily resistant to abrasion thanks to its mass per unit area, it ensures high mechanical strength and waterproofing performance without compromising manageability.
BYTUM 1100, the bituminous underlay control layer that everyone agrees on.
The BYTUM 1100 bituminous underlay control layer is designed for installation on the external side of the roof. Thanks to its thickness, it effectively resists atmospheric agents of any intensity. It can also be used as a vapour control membrane on uneven surfaces such as concrete floors.
Documents
Technical data sheets
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| Declaration of performance (DOP) | Download |
Recommendations for installation
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BYTUM 1100
| CODE | description | tape | H
[m]
|
L
[m]
|
A
[m²]
|
H
[ft]
|
L
[ft]
|
A
[sft]
|
pcs./pallet |
|---|---|---|---|---|---|---|---|---|---|
| BYT1100 | BYTUM 1100 | - | 1 | 25 | 25 | 3' 3 3/8'' | 82 | 269 | 24 |
Technical Data
| Property | Standard | Tested Values | USC Conversion |
|---|---|---|---|
| Mass per unit area | EN 1849-2 | 1100 g/m² | 3.6 oz/ft² |
| Thickness | EN 1849-2 | 1,1 mm | 43 mil |
| Water vapour transmission (Sd) | EN 1931 | 55 m | 0.064 PERM |
| Tensile strength MD/CD | EN 12311-1 | 650 / 500 N/50mm | 74 / 57 lb/in |
| Elongation MD/CD | EN 12311-1 | 45 / 50 % | - |
| Resistance to nail tearing MD/CD | EN 12310-1 | 230 / 230 N | 52 / 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 | - | 120 J/(kg·K) | - |
| Density | - | ca. 1000 kg/m³ | - |
| Water vapour resistance factor (μ) | - | ca. 50000 | - |
| UV stability | EN 13859-2 | 4 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 | 600 / 450 N/50mm | 69 / 51 lb/in |
| After artificial ageing - elongation | EN 1297 / EN 12311-1 | 35 / 40 % | - |
| Flexibility at low temperatures | EN 1109 | -45 / °C | -49 / °F |
Composition
| TOP LAYER | non-woven PP fabric |
|---|---|
| compound | bituminous mixture |
| REINFORCING LAYER | PL fabric |
| compound | bituminous mixture |
| BOTTOM LAYER | non-woven PP fabric |
