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

URN: 3002220
£37.25ex. VAT £12.93 per m2
£37.25ex. VAT
£12.93 per m2
Bulk Discount
10+ packs 15+ packs 25+ packs
£36.86ex. VAT £36.69ex. VAT £36.49ex. VAT
Coverage required
m
m
Based on your total area of m2 (inc. 10% wastage) - of these are required (actual coverage of m2)

We recommend purchasing at least 10% extra product to allow for errors, damages or obstacles

140mm Rockwool Flexi Slab is a 2-in-1 thermal and acoustic insulation with a unique flexible edge that allows the product to be tightly fitted between timber and metal frame systems.

Nationwide Delivery

Mon 29 Apr

Order within 34hrs

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Product Overview

140mm Rockwool Flexi Slab is a 2-in-1 thermal and acoustic insulation with a unique flexible edge that allows the product to be tightly fitted between timber and metal frame systems.

URN: 3002220
£37.25ex. VAT

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Delivery & Returns Information

All delivery charges are shown in your basket and are dependent on the total value of items in your basket based on product category.

Standard (Nationwide) Delivery

Insulation, Plasterboard and Drylining Products
ORDER VALUE DELIVERY CHARGE
Under £150 ex. VAT £50 ex. VAT
Between £150 - £400 ex. VAT £35 ex. VAT
Over £400 ex. VAT FREE
Timber & Sheet, Building Materials, Doors & Joinery and Gardens & Landscaping Products
ORDER VALUE DELIVERY CHARGE
Under £100 ex. VAT £35 ex. VAT
Between £100 - £300 ex. VAT £20 ex. VAT
Over £300 ex. VAT FREE
SuperFOIL and YBS products
ORDER VALUE DELIVERY CHARGE
Each item £10 ex. VAT
Over £350 ex. VAT of 1 brand FREE
Screws & Fixings and Adhesives & Sealants
ORDER VALUE DELIVERY CHARGE
Under £100 ex. VAT £7.50 ex. VAT
Over £100 ex. VAT FREE
Thermafleece CosyWool Roll & SupaSoft Insulation
QUANTITY DELIVERY CHARGE
1 £30 ex. VAT
2 £60 ex. VAT
3 to 12 £70 ex. VAT
13 to 24 £140 ex. VAT
25 to 36 £210 ex. VAT
37 to 48 £280 ex. VAT
49 to 60 £350 ex. VAT
61+ £420 ex. VAT
Thermafleece CosyWool Slab, Thermafleece UltraWool & Thermafleece NatraHemp
QUANTITY DELIVERY CHARGE
1 £30 ex. VAT
2 £60 ex. VAT
3 to 4 £70 ex. VAT
5 to 8 £140 ex. VAT
9 to 12 £210 ex. VAT
13 to 16 £280 ex. VAT
17 to 20 £350 ex. VAT
21+ £420 ex. VAT
Block Pavers
ORDER VALUE DELIVERY CHARGE
Under £100 ex. VAT £17.50 ex. VAT
Between £100 - £200 ex. VAT £30.50 ex. VAT
Between £200 - £900 ex. VAT £105 ex. VAT
Over £900 ex. VAT FREE
Artificial Grass
ORDER VALUE DELIVERY CHARGE
Under £100 ex. VAT £12 ex. VAT
Between £100 - £200 ex. VAT £16.50 ex. VAT
Over £200 ex. VAT £22 ex. VAT

Express Delivery

Express Delivery - Insulation and Plasterboard & Drylining
ORDER VALUE DELIVERY CHARGE
Under £300 ex. VAT £50 ex. VAT
Over £300 ex. VAT £35 ex. VAT
Express Delivery - Timber & Sheet, Building Materials, Doors & Joinery and Gardens & Landscaping Products
ORDER VALUE DELIVERY CHARGE
Under £300 ex. VAT £50 ex. VAT
Over £300 ex. VAT £35 ex. VAT

This charge is based on delivery to mainland UK excluding the Scottish Highlands. If your delivery address is in the Scottish Highlands a member of our customer service team will contact you prior to processing your order should an additional delivery charge apply. We do not offer deliveries outside the UK mainland.

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Returns

We offer a 30 day returns policy on any faulty products.

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Key Features

  • Water repellent qualities
  • Excellent acoustic and thermal performance
  • Will not slump, even if studs shrink
  • Friction fits between timber and metal frames 
  • Reduces potential for air gaps 
  • Fire resistance

Technical Specification

Technical Specification
Material Type:Rock Mineral
Thickness:140mm
Width:600mm
Length:1200mm
Pieces Per Pack:4
Sales Unit:Pack
Sales Unit Coverage:2.88m2
Brand:Rockwool
Manufacturer's Reference:123330
Thermal Conductivity:0.035W/mK
Fire Rating:A1 Non-Combustible

What is 140mm Rockwool Flexi? 

Discover the pinnacle of insulation technology with the 140mm Rockwool Flexi Insulation Slab, a revolutionary solution designed to elevate comfort and tranquillity within your home. 

Engineered to excel in both sound dampening and thermal insulation, this slab boasts a patented flexible edge, ensuring a seamless, friction-fitted installation within any supporting framework. 

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.

Crafted from renewable volcanic rock, it not only offers exceptional fire resistance (with a classification of A1 non-combustible) but also significantly reduces the carbon footprint of buildings, aligning with sustainable construction practices.

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.


Where Is 140mm Rockwool Flexi Used? 

  • 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 Slab Benefits

  • 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


140mm Rockwool Flexi 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


140mm Rockwool Flexi 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 in a cool, dry area. 

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.

Customer Reviews

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5/5 based on 1 review

has a great flexible edge for quick installation. extremely fire resistant. perfect for internal partitions.

Alex Barms on

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