140mm Rockwool Flexi Acoustic Sound Insulation Slab (2.88m2/Pack)

140mm Rockwool Flexi Insulation Slab helps to dampen vibrations and sounds, so you can limit unwanted noise and improve comfort levels throughout your home. What really sets 140mm Rockwool Flexi Slab apart from the rest of the Rockwool range is that it has a patented flexible edge, which allows it to be perfectly friction fitted within the supporting framework. Not only that, but it offers fantastic thermal, acoustic and fire performance in one robust insulation solution. 

Made from renewable volcanic rock, these slabs are extremely fire resistant (with a classification of A1 non-combustible) and won’t burn, or release toxic gases or smoke when exposed to high heat. The natural composition of the slabs also means they significantly reduce the carbon footprint of a building. They are suitable for installation between wall frames, roofs, floors and partitions and are considered an effective thermal insulation solution with a thermal conductivity of 0.035W/mK.

140mm Rockwool Flexi Acoustic Sound Insulation Slab Applications

It's no secret that 1200mm x 600mm Rockwool Flexi slabs are all-rounders. The slabs can be used all over the home: in pitched roof rafters, framed external walls, internal partitions, intermediate floors, separating walls and floors, and timber suspended ground floors. 

The flexible edge allows the product to be tightly fitted between timber and metal frames, without the need for cutting or waste. This tight fit is essential in ensuring optimum thermal and acoustic integrity.

The slabs can be used for the following construction types:

• Interior timber or steel partition walls
• Interior timber frame floors
• Interior timber frame ceilings
• Acoustic ceilings and partition panels
• I-joist interior partitions
• Party walls

140mm Rockwool Flexi Slabs Specifications

This Rockwool Flexi slab is a dual purpose thermal and acoustic insulation product with a unique flexible edge that allows the product to be tightly fitted between typical timber and metal frame systems, reducing the potential for air gaps to occur and ensuring optimum effectiveness.

The slabs come in a pack quantity of 4 per pack, giving a pack coverage of (2.88m2/Pack).
Let's have a look at the specs:

• Low Global Warming Potential (GWP) and Zero Ozone Depleting Potential (ODP)
• Part E acoustic rating (resistance to sound) when installed in accordance with ROCKWOOL guidelines
• Rot-resistant - withstands mould and mildew
• Thermal conductivity of 0.035 W/mK
• Water repellent qualities of the insulation prevent moisture build-up, dampness and rot
• Excellent acoustic and thermal performance
• Will not slump, even if studs shrink
• Friction fit for timber and metal frames
• Fire resistance

Rockwool 140mm Flexi Slab Certifications

BS EN is British and European Standard Specifications. With over 100 years of experience, the British Standards Institute is recognised as the UK’s National standards body. BS EN considers Rockwool both:

• Euroclass A1 non-combustible in accordance with BS EN 13501-1 - achieving the highest possible level of fire performance
• CE and Key marked in accordance with BS EN 13162:2012 + A1:2015.v

140mm Rockwool Flexi insulation slabs are also certified by Lloyd's register of shipping as non-combustible materials for use on:

• Fixed offshore installations
• MED classed ships- DTLR MCA approval
• Rated non-combustible in accordance with ISO 1182 and IMO A. 799

Rockwool Flexi Slab Storage & Handling

Rockwool Flexi 140mm slabs have a soft, fibrous texture, very similar to a loaf of bread. Because of this, a serrated blade is all you need to slice through it. We recommend marking the dimensions you need on your slab to avoid mistakes.
When it comes to storage, we advise that you store the slabs inside; keeping them nice and dry.

About Rockwool

Rockwool is recognised as being the market-leading acoustic insulation solution. The Rockwool Flexi slab range offers outstanding thermal, acoustic and fire insulation properties as well as lifelong durability. 140mm Rockwool Flexi insulation slabs achieve Lambda 0.035W/mK.

Rockwool Flexi 140mm Acoustic Performance

Rockwool Flexi slab is a thermal mineral wool insulation, perfect for people who want to insulate their homes against unwanted noise. Rockwool Flexi slab's patented flexible edge ensures a perfect fit is maintained between the product and its supporting framework. 

Rockwool RW slabs work in two distinct ways to dampen sound, either by impeding the transmission of sound through an element of the structure or by absorption of sound at the surface.