Rockwool 4.32m2 Flexi Slab Insulation - 100mm (Pack of 6)
Rockwool 4.32m2 Flexi Slab Insulation - 100mm (Pack of 6) additional 1Rockwool 4.32m2 Flexi Slab Insulation - 100mm (Pack of 6) additional 2

£23.70 ex VAT£28.44 inc VATWas: £0.00 ex VAT


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  • Additional Information
  • Code: RG0028
  • Brand: Rockwool
  • Availability: 5 - 7 Working Days
  • Can't find what you're looking for?
    Please give us a call on 01858 455055
Due to Coronavirus, deliveries may take slightly longer than advertised.

Rockwool Flexi Slab Insulation is a versatile and intelligent form of acoustic and thermal mineral wool insulation, suited to a wide range of different applications. Manufactured with a patented flexible edge, the Flexi slab creates the perfect fit between the insulation and supporting framework. It also offers an accurate fit for all widths and eliminates problems with cold spots and acoustics that are associated with generic types of insulation.

Suitable for use all over the home: Pitched roof rafters, framed external walls, internal partitions, intermediate floors, separating walls and floors, and timber suspended ground floors. Can also be fitted between fresh timber, expanding into the wider space as the timber dries out and shrinks back

  • Easy to install
  • Pack of 6
  • Dimensions: 1200mm x 600mm x 100mm
  • Accurate fit for all widths, stopping problems with cold spots and acoustics
  • FLEXI provides excellent thermal and acoustic performance
  • High performing acoustic, thermal and fire protection properties
  • Fits all typical metal and timber framework
  • Euroclass A1 classified non-combustible for fire resistance
  • Compliance    BS EN 13162, ISO 14001
  • Thermal conductivity: Thermal - 50mm - 120mm, 0.038 W/mK / Acoustic - 140mm - 180mm, 0.035 W/mK
  • Resistance to sound when installed in accordance to ROCKWOOL guidelines
  • Water Repellent
  • CE Marked

Customer Reviews5.05 5.0/5 Based on 1 review


Good quality productReviewed by Timblackmore61 on 09 Dec 2020

Goos quality product ideal for the project we were doing. Product is very flexible to fit between purlina Excellent customer service with order delivered on time. *****


How much does delivery cost?

Delivery charges will vary and will depend on the manufacturer, weight, size and delivery location. The cost is automatically calculated when you add items to the shopping basket.

How long will I wait for my delivery?

The estimated delivery times are shown on each product page, we will email you each step of the way to keep you informed. The majority of products can be delivered within 3-5 working days. We will advise you if the delivery period is different from than stated on our website. Please note that, due to Coronavirus, deliveries may take longer than advertised.

Do you offer NEXT DAY delivery?

We currently offer next day delivery on certain brands. If you have a particular item that you require quicker than the guide on our website, please contact our sales team on 01858 455055 during office hours, they will be able to confirm whether a quicker delivery is possible.

What if my delivery doesn't turn up on time?

Please contact our sales office on 01858 455055 or email and we will advise on the status of your order.

Do you offer FREE Delivery if I spend a substantial amount?

Not as standard, we show the delivery charges separate once you go to the checkout so it is clear what you are paying for the products and delivery costs. If you are ordering larger quantities please contact out sales team who will be able to confirm if this is possible.

Do you deliver on Weekends?

Not as standard, our deliveries are made Monday to Friday. If you do need an urgent Saturday delivery please contact out sales team on 01858 455055 during office hours who will be able to confirm. This will incur a premium charge if possible.

Do you deliver to Northern Ireland/Guernsey/The Scottish Highlands/Isle of Wight?

Yes, we do but our transport charges incorporated in the site do not cover these areas, please contact our sales team on 01858 455055 during office hours for costs; or we will contact you to make the additional payment once you have completed your online purchase.

What should I do when my order arrives?

Please check your order as soon as its arrives to ensure it is as requested, and to check for any damage or items missing. All damages/items missing should be reported to the driver and signed for as damaged/and or missing. Please contact Roof Giant within 24-48 hours with full details to enable us to inform the supplier.



As a consumer you have the right to change your mind (Consumer Regulations 2013). This right stipulates that for most products purchased online you have a legal right to change your mind within 14 days and receive a refund under the consumer contracts regulations 2013.

This right starts from the point you or someone you nominate receives the goods. If your goods are being delivered in multiple deliveries your right starts from the point the last delivery is received

If you wish to exercise this right you must in the first instance contact us via phone 01858 455055 or email advising us of your wish to change your mind, its then your responsibility to arrange for the goods to be returned to us within 14 days of ending the contract. If you wish for us to arrange collection of the goods when you are responsible for the cost of return we will charge to you the direct cost of the collection.

For more information on our full returns policy, click here.