SELF-ADHESIVE BITUMINOUS MEMBRANE
BYTUM BASE 2500
The BYTUM BASE 2500 self-adhesive bituminous membrane is the ideal solution on flat roofs in combination with the BYTUM SLATE 3500 slated membrane as the final visible layer. The polymer-modified bituminous compound ensures flexibility and workability even at low temperatures, and allows installation without the use of naked flames or heat.
BYTUM BASE 2500, the self-adhesive bituminous membrane that simplifies installation.
The screen-printed film makes installation extremely easy. The adhesive compound and the polyester surface finish allow perfect self-sealing of the membrane. Used on slopes up to 5° as an underlay, this adhesive bituminous membrane guarantees excellent water tightness.
Documents
Technical data sheets
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|---|---|
| Declaration of performance (DOP) | Download |
Recommendations for installation
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BYTUM BASE 2500
| CODE | description | liner | H
[m]
|
L
[m]
|
A
[m²]
|
H
[ft]
|
L
[ft]
|
A
[sft]
|
pcs./pallet |
|---|---|---|---|---|---|---|---|---|---|
| BYTBASE2500 | BYTUM BASE 2500 | 500/500 | 1 | 10 | 10 | 3' 3 3/8'' | 33 | 108 | 29 |
Technical Data
| Property | Standard | Tested Values | USC Conversion |
|---|---|---|---|
| Mass per unit area | EN 1849-1 | ca. 2550 g/m² | ca. 8.36 oz/ft² |
| Thickness | EN 1849-1 | 2 mm | 79 mil |
| Water vapour transmission (Sd) | EN 1931 | ca. 200 m | ca. 0.017 PERM |
| Tensile strength MD/CD | EN 12311-1 | 400 / 300 N/50mm | 46 / 34 lb/in |
| Elongation MD/CD | EN 12311-1 | 35 / 35 % | - |
| Resistance to nail tearing MD/CD | EN 12310-1 | 120 / 120 N | 27 / 27 lbf |
| Watertightness | EN 1928 | 60 kPa | - |
| Thermal resistance | - | -40 / 100 °C | -40 / 212 °F |
| Reaction to fire | EN 13501-1 | class E | - |
| Thermal conductivity (λ) | - | 0,17 W/(m·K) | 1.18 (BTU·in)/(h·ft²·°F) |
| Specific heat | - | 170 J/(kg·K) | - |
| Density | - | ca. 1250 kg/m³ | - |
| Water vapour resistance factor (μ) | - | ca. 100000 | - |
| Joint strength | EN 12317-2 | 300 / 200 N/50mm | 34.260883 / 22.840589 lb/in |
| Joint detachment resistance | EN 12316-1 | - | - |
| 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 | 300 / 200 N/50mm | 34 / 23 lb/in |
| After artificial ageing - elongation | EN 1297 / EN 12311-1 | 35 / 35 % | - |
| Flexibility at low temperatures | EN 1109 | -20 / °C | -4 / °F |
| Hot sliding | EN 1110 | 100 °C | 212 °F |
| Application temperature | - | 10 / °C | 50 / °F |
| - Resistance to detachment at 90° (adhesion) | ASTM D 2979 | 50 N | 11.240451 lbf |
Composition
| TOP LAYER | PL film |
|---|---|
| compound | elastoplastic polymeric distilled bitumen |
| REINFORCING LAYER | PL stabilised with fibreglass |
| compound | elastoplastic polymeric distilled bitumen |
| Adhesive layer | distilled bitumen modified with self-adhesive polymer |
| RELEASE LINER | removable plastic film |
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