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Silent Floor Bytum - Resilient Underscreed Membrane
Verified by manufacturer 4 days ago
Resilient underscreed membrane made of elastoplastomeric bitumen waterproofing membrane and polyester fibre felt made from post-consumer waste.
Application
Used as an underscreed membrane to absorb impact noise vibrations and prevent screed percolation in timber-to-concrete construction, typically applied in new constructions or renovation works on masonry or timber structurers.
Description
Silent Floor Bytum is a resilient underscreed membrane made of elastoplastomeric bitumen waterproofing membrane and polyester fibre felt made from post-consumer waste.
Features and benefits:
- Absorbs vibrations from impact noise up to 20 dB.
- Prevents screed from percolating in applications with timber and concrete connectors, making it safe for historic or valuable buildings.
- Watertight due to the bituminous mixture that closes around the fastening system.
- Stable over time and highly compatible with fresh concrete.
General information
Color | Green White |
Finish | Other |
Material | Bitumen Felt Polyester |
Shape | Other Manufacturer guidanceRoll. |
Length | 10000 mm |
Width | 1050 mm |
Height | 5 mm Manufacturer guidanceThickness. |
Uniclass | |
CAWS | M13/265 Floating construction (thin sheet impact sound insulation) M10/295 Floating construction (thin sheet impact sound insulation) M13/40 Floating construction M10/40 Floating construction |
SKU Code | SILFLOORBYT5 |
Specification data - Resilient layer insulation
Classification data | |
Material | Elastoplastomeric bitumen waterproofing membrane with polyester fibre felt. Guidance for specification option: Polyester is made from post-consumer waste. |
Density | 240 kg/m³. |
Thickness | 5 mm. |
Sound insulation rating | Impact sound pressure level attenuation: ΔLw = 20 dB. Weighted normalized impact sound pressure level: Ln,w(CI) = 42 (0) dB. Weighted sound reduction index: Rw(C; Ctr) = 60 (–1; –4) dB. Manufacturer guidanceTests carried out in the Akustik Center Austria laboratories of the Holzforschung Austria association in accordance with EN ISO 10140-2 and EN ISO 10140-3 made it possible to measure the soundproofing and impact noise level of the construction assembly described below:
Consult manufacturer's literature for more details. |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | Manufacturer guidancePolyester fibre felt made from post-consumer waste. |
Resistance to airflow | To ISO 9053, >100.0 kPa·s/m². |
Dynamic stiffness | Apparent dynamic stiffness s′ₜ to EN 29052-1, 7 MN/m³. Double layer apparent dynamic stiffness s′ₜ to EN 29052-1, 4 MN/m³. Dynamic stiffness s' to EN 29052-1, 27 MN/m³. Double layer dynamic stiffness s' to EN 29052-1, 14.5 MN/m³. Guidance for specification option: Double layer is with opposing white felts. |
Area weight | 1.2 kg/m². |
IsolatorCompressibility | To EN 12431: CP2, ≤ 2 mm (single layer); CP3, ≤ 3 mm (double layer). Manufacturer guidanceCompressibility class. |
Technical characteristics, other | Creep, viscous sliding under compression, Xct (2 kPa), to EN 1606: ≤ 1 mm (single and double layer). |
SoundFrequency | To ISO 1254-2, 74.4 Hz (single layer); 54.5 Hz (double layer). Manufacturer guidanceSystem resonance frequency f₀. |
Thermal resistance | To ISO 6946, 0.13 0.13 m²·K/W. |
ThermalConductivity | 0.045–0.17 W/(m·K). Guidance for specification option: Bituminous membrane - white felt. |
Specific heat | 1.3 kJ/(kg·K). |
Water vapour resistance | μ factor to EN 12086, 100 000. Sd value: >70 m. |
Sustainability data
Material | Bitumen Felt Polyester |
Literature
Literature type
Silent Floor Bytum - Technical Data Sheet
Silent Floor Bytum - Technical Manual