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.
Description
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
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Technical data sheets
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Recommendations for installation
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 US perm |
| Tensile strength MD/CD | EN 12311-1 | 650 / 500 N/50mm | 74 / 57 lbf/in |
| Elongation MD/CD | EN 12311-1 | 45 / 50 % | - |
| Resistance to nail tearing MD/CD | EN 12310-1 | 230 / 230 N | 52 / 52 lbf |
| Resistance to temperature | - | -45 / 100 °C | -49 / 212 °F |
| Reaction to fire | EN 13501-1 | class E | - |
| Resistance to penetration of air | EN 12114 | < 0,02 m³/(m²·h·50Pa) | < 0.001 cfm/ft² at 50Pa |
| Thermal conductivity (λ) | - | 0,2 W/(m·K) | 0.12 BTU/(h·ft·°F) |
| Specific heat | - | 120 J/(kg·K) | - |
| Density | - | ca. 1000 kg/m³ | - |
| Water vapour resistance factor (μ) | - | ca. 50000 | - |
| UV stability (1 ) | - | 336h (3 months) | - |
| Exposure to weather | - | 3 weeks | - |
| 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 % | - |
| Watertightness after artificial ageing | EN 1297 / EN 1928 | 2 kPa (compliant) | - |
Composition
| TOP LAYER | non-woven PP fabric |
|---|---|
| compound | bituminous mixture |
| REINFORCING LAYER | PL fabric |
| compound | bituminous mixture |
| BOTTOM LAYER | non-woven PP fabric |
Specifications
BYTUM 1100
Supply and installation of bituminous underlay membrane for roof tiles, type BYTUM 1100.
Composition
From top layer to bottom layer:
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non-woven PP fabric;
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bituminous mixture;
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PL fabric;
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bituminous mixture;
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non-woven PP fabric.
Properties
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Mass per unit area [g/m²]: 1100
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Thickness [mm]: 1,1
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Water vapour transmission (Sd)[m]: 55
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Tensile strength MD/CD [N/50 mm]: 650/500
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Elongation MD/CD [%]: 45/50
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Resistance to nail tearing MD/CD [N]: 230/230
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Watertightness (2 kPa): comply with (EN 1928)
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Resistance to temperature [C°]: -45/100
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Reaction to fire: class E (EN 13501-1)
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UV stability: 336h (3 months)
Standards and certifications
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CE marked in accordance with EN 13859-1
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AUS 4200.1 Class 2
Description
The application surface must be dry, free of dust and grease. Surface elements must be removed so that the membrane is not damaged during application.
Thanks to its thickness, it effectively resists atmospheric agents of any intensity.
Recommended use: The membrane is designed for applications on the exterior side of the roof.
It can also be used as a vapour control membrane on uneven surfaces such as concrete floors.
Installation: Unroll the membrane and fasten each layer to the substrate using a mechanical fastener to ensure installation stability.
If a membrane without integrated double tape is used, sealing must be carried out using a compatible tape such as FLEXY BAND, FLEXY BAND UV, SPEEDY BAND, or EASY BAND