Qfloor35 – Structural Acoustic Floor Systems

Qfloor35 – Structural Acoustic Floor Systems

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QFloor Soundproof Floor Boards

Looking to meet part E building regulations for sound insulation? Then Qfloor 35 soundproof floor board is your perfect acoustic flooring solution.

Use Qfloor 35 over your timber battens when you are building your flooring system. Qfloor 35 is a high performance soundproofing floor system designed to reduce sound transmission through new build and existing properties. When installed as part of a complete sound reduction system it enables a timber floor to meet the sound transmission regulations of Document E.

Sound Absorption iconSound Absorption

Sound absorption or noise deadening, is one of the key properties of Quietstone. The structure of the material is designed to take in and absorb the sound energy. This unwanted sound is then lost or transmitted away thus ‘deadening’ the noise.

Sound Insulation iconSound Insulation

We offer expertise and a range of products for sound insulation. Whether your requirement is for an indoor or outdoor noise barrier we have a range of products suitable for any sound insulation project. We supply barrier sheets for partition walls, ceiling systems and lining material for marine engine rooms.


  • For Offices
  • For Home Use
  • Halls
  • Function Rooms
  • Bars and Nighclubs

Technical Specifications

1st Layer22mm P5 moisture resistant chipboard

2nd LayerBonded to 3mm Polymeric Barrier

3rd LayerBonded to 10mm layer of recycled foam

BaseProtected by an anti crumb encapsulating layer

Overall Dimensions2400mm x 600mm x 35mm thick

Resilient layer composition3mm Polymeric Barrier
10mm Recycled Acustic Chip Foam with anti-crumb encapsulating layer


Treated Floor D nT,w + Ctr L nT,w
46 dB 56 dB

Based on a ceiling construction of 45kg/m3 insulation between joist & 2 x 12.5mm plasterboard


Qfloor 35 should be laid directly onto the joists in a broken bond pattern with all joints glued and perimeters sealed using 37mm x 10mm Perimeter isolation tape.

After installation is complete ensure any remaining gaps are sealed with Duoseal acoustic mastic, see fitting instructions for full details.

Drawing of Qfloor 35

Quietstone Acoustic Products
Quietstone UK Ltd

Nab Quarry, Pott Shrigley, Macclesfield, Cheshire, SK10 5SD