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.
Description
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
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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 1849-1 | 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 US perm |
| Tensile strength MD/CD | EN 12311-1 | 500 / 400 N/50mm | 57 / 46 lbf/in |
| Elongation MD/CD | EN 12311-1 | 40 / 40 % | - |
| Resistance to nail tearing MD/CD | EN 12310-1 | 150 / 200 N | 34 / 45 lbf |
| Resistance to temperature | - | -20 / 100 °C | -4 / 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 | - | 175 J/(kg·K) | - |
| Density | - | ca. 1300 kg/m³ | - |
| Water vapour resistance factor (μ) | - | ca. 20000 | - |
| UV stability (1 ) | - | 336h (3 months) | - |
| Watertightness after artificial ageing | EN 1297 / EN 1928 | compliant | - |
| After artificial ageing - Tensile strength MD/CD | EN 1297 / EN 12311-1 | 400 / 300 N/50mm | 46 / 34 lb/in |
| After artificial ageing - elongation | EN 1297 / EN 12311-1 | 35 / 35 % | - |
| Flexibility at low temperatures | EN 1109 | - | - |
| Flexibility at low temperatures | EN 1109 | - | - |
| Storage temperature | - | 5 / 40 °C | 41 / 104 °F |
| Watertightness | EN 1928 | 60 kPa | - |
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 1500
Supply and installation of bituminous underlay membrane for roof tiles, Type BYTUM 1500.
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]: 1500
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Thickness [mm]: 1,3
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Water vapour transmission (Sd)[m]: 120
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Tensile strength MD/CD [N/50 mm]: 500/400
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Elongation MD/CD [%]: 40/40
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Resistance to nail tearing MD/CD [N]: 150/200
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Watertightness (60 kPa): comply with (EN 1928)
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Resistance to temperature [C°]: -20/100
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Reaction to fire: class E (EN 13501-1)
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UV stability: 336h (3 months)
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Storage temperature [°C]: +5/+40
Standards and certifications
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CE marked in accordance with EN 13859-1, EN 13707
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AUS 4200.1 Class 1
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.
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