SilentCloud Lay 11m - Felt Underlay


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The SilentCloud 11m - Felt Underlay stands out as a high-performance jute felt underlay meticulously crafted to diminish impact sound and footfall noise emanating from carpets or solid timber flooring. Tailored for quick and easy installation, it proves ideal for domestic use, effectively curbing the transmission of impact sound from the carpet or timber floor finish to the structure. It is recommended for straightforward underlay applications in domestic settings.


  • Fibre Composition: Hair/Jute/Mixed Fibres (100% Recycled)
  • Nominal Weight: 1695g/m² (+/- 5%) (50oz/yd²)
  • Nominal Thickness: 11.00mm (+/- 0.5mm)
  • Roll Width: 1.37m
  • Roll Length: 12.5m
  • Standard Roll Area: 17.125m²
  • Flame Retardancy: BS4790:1987 (Hot Metal Nut Test) Endurance FR achieves a 'low radius of effects of ignition' - no more than 20mm against the maximum permitted of 35mm for low radius classification.
  • Static Loading: BS4939 Thickness loss after 24 hours loading and 24 hours recovery: Retained FR50 56%
  • Sound impact: BS2750 Part 8:1980 Weighted impact sound improvement 24db
  • Thermal Resistance: BS3745 2.5 Togs

Performance The SilentCloud 11m - Felt Underlay has undergone rigorous testing, demonstrating its efficacy in reducing impact sound transmission. Test data can be provided upon request.

Features And Benefits

  • Environmentally friendly: Crafted from recycled materials, reducing waste and promoting sustainability.
  • Easy to trim with scissors: Can be effortlessly cut to fit any size or shape of flooring, ensuring a perfect fit.
  • Safe to handle without causing skin or respiratory irritation: Hypoallergenic and free from harmful chemicals, ensuring safety during installation and handling.
  • Excellent sound insulation: Reduces noise transmission between floors, fostering a quieter and more peaceful living environment.
  • Enhanced thermal insulation: Adds an extra layer of insulation, assisting in maintaining warmth in winter and coolness in summer.
  • Moisture resistant: Helps prevent the build-up of moisture and condensation, safeguarding the flooring and prolonging its lifespan.
  • Improves underfoot comfort: Adds a cushioning effect underfoot, enhancing the comfort of walking on the flooring.
  • Reduces wear and tear: Acts as a protective barrier between the flooring and subfloor, minimizing damage and extending the life of the flooring.
  • Easy to install: Can be effortlessly rolled out and secured in place, saving time and effort during installation.
  • Compatible with various flooring types: Suitable for use with laminate, engineered wood, and vinyl flooring, offering versatile underlayment options.


  • Residential Buildings: SilentCloud Acoustics SilentCloud 11m - Felt Underlay finds widespread use in residential buildings to diminish noise transmission between floors, making it ideal for apartments, houses, and condominiums.
  • Commercial Buildings: This product is equally fitting for commercial buildings such as offices, hotels, and restaurants where noise reduction is crucial.
  • Educational Institutions: Schools, colleges, and universities can benefit from the use of this underlay to cultivate a quieter learning environment.
  • Healthcare Facilities: In hospitals and clinics, it can contribute to creating a peaceful environment for patients.
  • Recording Studios: SilentCloud Acoustics SilentCloud 11m - Felt Underlay is well-suited for use in recording studios to enhance sound quality by reducing background noise.
  • Home Theatres: It proves useful in home theatres to elevate sound quality and create a more immersive viewing experience.
  • Industrial Buildings: In industrial settings, it can aid in reducing noise pollution and creating a safer working environment.

Installation Full fitting instructions are provided with all products and can be downloaded from the Installation Guides section.


  • BS4790:1987 (Hot Metal Nut Test)
  • BS4939 (Static Loading)
  • BS2750 Part 8:1980 (Sound impact)
  • BS3745 (Thermal Resistance)

About SilentCloud Acoustics SilentCloud Acoustics is a leading manufacturer of acoustic products, specializing in providing solutions for noise control and soundproofing. With a focus on quality and performance, SilentCloud Acoustics products are designed to meet the highest standards in the industry.

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