100mm Rockwool Flexi Acoustic Sound Insulation Slab (4.32m2/Pack)

URN: 3002218
£39.61ex. VAT £9.17 per m2
£39.61ex. VAT
£9.17 per m2
Bulk Discount
10+ packs 15+ packs 20+ packs
£39.23ex. VAT £39.01ex. VAT £38.84ex. 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

100mm 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.

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Mon 29 Jul

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Product Overview

100mm 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: 3002218
£39.61ex. 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, 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
Doors and Feature Panelling
QUANTITY DELIVERY CHARGE
1 to 2 £40 ex. VAT
3 to 4 £50 ex. VAT
5+ £65 ex. VAT

* Deliveries of Doors and Panels to Scotland may incur additional costs and may have an extended delivery time of an additional 3 working days. Delivery to the postcodes below will be charged an additional delivery fee. Our customer service team will reach out to you if you order requires an additional delivery charge. This will be calculated based on the difference between the standard cost charged and the total cost outlined below:

Postcodes: KA1-29, IV1-39, AB, PH1-41, DD, PA1-19, KY, FK, FK15-21 - £100 ex VAT (total delivery cost)
Postcodes: KW 1-14 - £130 ex VAT (total delivery cost)
Highlands and Island: £305 ex VAT (total delivery cost)

Ironmongery
QUANTITY DELIVERY CHARGE
1+ £16.50 ex. VAT

Express Delivery

Express Delivery - Insulation and Plasterboard & Drylining
ORDER VALUE DELIVERY CHARGE
Under £400 ex. VAT £50 ex. VAT
Over £400 ex. VAT £35 ex. VAT
Express Delivery - Timber & Sheet, Building Materials, 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:100mm
Width:600mm
Length:1200mm
Pieces Per Pack:6
Sales Unit:Pack
Sales Unit Coverage:4.32m2
Brand:Rockwool
Manufacturer's Reference:123326
Thermal Conductivity:0.038W/mK
Fire Rating:A1 Non-Combustible

What Is 100mm Rockwool Flexi?  

In a world where quality matters, 100mm Rockwool Flexi stands tall as a reliable and resilient insulation solution. 

While it lives up to sister slabs such as Rockwool RWA45 in terms of its thermal and acoustic performance, what sets the 100mm Rockwool Flexi Slab apart is that it has a patented flexible edge, which allows it to be perfectly friction fitted within the supporting framework.

Crafted from renewable volcanic rock, it boasts remarkable fire resistance with a classification of A1 non-combustible.

Perfect for integration into metal and timber framing systems, 100mm Rockwool Flexi slabs significantly reduce a building's carbon footprint while ensuring excellent acoustic and fire resistance between wall frames, roofs, floors, and partitions.


Where Is 100mm Rockwool Flexi Used? 

100mm Rockwool Flexi lives up to the Flexi in its name through its sheer versatility. It can be employed in pitched roof rafters, framed external walls, internal partitions, intermediate floors, separating walls and floors, and timber suspended ground floors. 

Its flexible edge helps to overcome the issue of fresh timber shrinkage by expanding into the wider space as the timber dries out. 

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


100mm Rockwool Flexi Slabs Specifications

  • 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 0.038 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 - unique flexible edge 
  • Reduces potential for air gaps 
  • Fire resistance


100mm Rockwool 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


100mm 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


100mm Rockwool Flexi Slab Storage & Handling

Rockwool Flexi 100mm 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 dry and protected from the elements.

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. 100mm Rockwool Flexi insulation slabs achieve Lambda 0.038W/mK.

Customer Reviews

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5/5 based on 1 review

love this product with its unique flexible edge! fit between some fresh timber that went up the day before and on some internal partitions made of metal. will buy again.

Christopher Chivers on

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