DRY SCREED ACOUSTIC OVERLAY BOARD

DryBloc 35S

Factory-laminated fibre cement, rubber crumb, and resilient fleece layers for enhanced airborne and impact sound insulation in lightweight floor constructions.

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DryBloc® 35S is a factory-laminated high-mass floating floor panel combining a 22 mm tongue-and-groove DryBloc® fibre cement board with a 3 mm DeciBloc® rubber crumb isolation layer and a recycled acoustic fleece resilient layer

Engineered for lightweight floor constructions, it provides excellent airborne and impact sound insulation while creating a stable, dense platform ready to accept a wide range of floor finishes, making it ideal for residential and commercial acoustic applications

Description

DryBloc® 35s - High‑Mass Acoustic Floating Floor Panel


DryBloc® 35s is a factory‑laminated, high‑mass floating floor panel designed to improve both airborne and impact sound insulation in lightweight floor constructions. The system combines a 22mm tongued‑and‑grooved (T&G) DryBloc® fibre‑cement board with a DeciBloc® 3mm rubber‑crumb isolation layer and a recycled acoustic fleece resilient layer, creating a stable, dense platform ready to receive a wide range of floor finishes.

By adding significant mass while controlling resonance and flanking transmission, DryBloc® 35s is intended to support compliance with UK Building Regulations for separating floors when used as part of a compatible build‑up and detailing strategy. 


Panel Construction (top to bottom)

  1. 22mm T&G DryBloc® fibre‑cement board - high mass, moisture‑robust substrate providing a smooth, stable surface.
  2. DeciBloc® 3mm rubber‑crumb isolation layer - factory‑bonded to the underside of the board to reduce impact transmission and damp structure‑borne vibration.
  3. Recycled acoustic fleece resilient layer - decouples the board from the sub‑deck to further limit flanking paths and tune the system’s dynamic stiffness.


Our professional team are here to help you with any questions.

Key Features


Standard Sizes

Thicknesses: 35mm

Dimensions: 1200mm x 600mm


Support for Your Project

Have a technical advisor get in touch to discuss your needs and work out a suitable, effective solution for you. Get a quote, our experts are here to help you find the best solution for your project. Call us today: +44 (0) 208 050 5302 or send an email to support@cembloc.com

Advantages Of Use.

  • High mass + resilience to improve both airborne and impact performance in lightweight floors.
  • Stable surface ready for many floor finishes (carpet, LVT, engineered timber, ceramic/stone* - see Floor Finishes).
  • Factory‑bonded layers for quality and speed on site.
  • Moisture‑robust fibre‑cement board for improved dimensional stability compared to that of cement particle board.
  • Recycled content in rubber‑crumb and fleece layers.
  • UK‑focused: designed to support Approved Document E (England & Wales), Section 5 (Scotland) and Part G (Northern Ireland) compliance when integrated into a tested build‑up with appropriate ceilings and flanking control.
  • Refurbishment, change‑of‑use and new build suitability

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