Rockwool
Rockwool Cavity (All Sizes)
Rockwool Cavity (All Sizes)
SKU:RWCAV50
Est Delivery between 6th Feb and
12th Feb.

Add £300£360 worth of Rockwool to your order to unlock FREE delivery.
How much will I need?
We recommend adding 10% of additional product to the calculation to account for errors, damages, and obstacles in your project
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- Shipping protection for peace of mind
- Fast processing and delivery
- Flexible delivery options


Product Information
These products are sold in pallet quantities only. Price Listed is per pallet. Please see pallet quantities below.
Thickness | Sheets Per Pack | Pack Coverage | Number Of Packs |
---|---|---|---|
50mm | 12 | 6.55m2 | 15 |
75mm | 9 | 4.90m2 | 15 |
80mm | 8 | 4.37m2 | 15 |
100mm | 6 | 3.28m2 | 25 |
The Rockwool Cavity designed for cavity walls offers the best alternative cost-effective and reliable method for insulating new cavity walls. These slabs are light weighted insulation batts that help in eliminating heat loss without letting water transmission from the outer to the inner leaf. These slabs reduce the risk of condensation and make the intermittent heating systems more effective.
Features:
- Easy to handle and install
- Water repellent
- Cost effective
- Fire Classification: Rockwool Cavity achieves a reaction to fire classification of A1 as defined in EN 13501-1.
- Thermal Performance: Rockwool Cavity has a thermal conductivity (K value) of 0.037 W/mK.
- Water resistance: The orientation of the water repellent fibers prevents water crossing the wall construction.
- Use in tall buildings: Agrément Certificate No. 94/3079 covers the use of Rockwool Cavity in buildings up to 12m in height, and permits the use of Rockwool Cavity in buildings from 12m to 25m in height, provided the exposure factor does not exceed 120, and subject to a detailed project assessment by Rockwool Limited in association with the architect.
- Durability: Rockwool Cavity has been proven in service for over 30 years in all types of climate and degrees of exposure.
Advantages:
- Agreement certified for all exposure zones
- Act as a cavity barrier
- Water repellent
- Excellent thermal and fire insulation
- Superior fit against blockwork
Specifications:
- Slab size: 1200x445mm
- Thickness: 50mm or 75mm or 80mm or 100mm or 150mm
- Thermal conductivity: 0.037 W/mK
Health and Safety:
Current HSE ‘CHIP’ Regulations and EU directive 97/69/EC confirm the safety of Rockwool mineral wool; Rockwool fibers are not classified as a possible human carcinogen. The maximum exposure limit for mineral wool is 5mg/m3, 8 hour time-weighted average. A Material Safety Data Sheet is available from the Rockwool Marketing Services Department to assist in the preparation of risk assessments, as required by the Control of Substances Hazardous to Health Regulations (COSHH).
Environment:
Rockwool insulation relies on entrapped air for its thermal properties; air is not a VOC and it does not have Global Warming Potential (GWP) or Ozone Depleting Potential (ODP).
Technical Specifications
Coverage | 0.54m2 |
Length | 1200mm |
Material type | Rockfibre |
Thermal conductivity | 0.037 W/mK |
Width | 445mm |
Datasheets
Delivery Information
Est Delivery between 6th Feb and
12th Feb.


Delivery will always take place on a weekday (Mon - Fri excl. public holidays).
An exact delivery charge will be calculated at checkout based on your order and location.
Frequently asked questions
How do I track my order?
As soon as your order is dispatched, you'll receive a dispatch email with delivery dates and details for your order.
If you require an update on your order, you can email customerservice@i4lgroup.co.uk with your order number for assistance.
Can I order now and pay later?
Yes, we offer a variety of flexible payment options to all our customers.
When checking out online, you'll be able to avail of multiple buy now, pay later options with Klarna or PayPal.
The flexible payment options available to you at checkout will be based on the total value of your order.
For B2B customers, you can apply for a 30-day trade credit account, and you'll also unlock:
- Dedicated trade pricing
- Loyalty points and rewards
- A dedicated account manager
Do you really have the best prices online?
Yes! We even have a price match guarantee.
We are so confident that we have the best prices out there that we will match the price of any other online or local retailer.
If you find the same product cheaper elsewhere, we will match the price — just send us the quote or website link.
Read more: Price Match Guarantee
I have a large-scale project, can I get a quote?
Yes, if you are carrying out a construction project that requires a large quantity of materials, email sales@i4lgroup.co.uk with the following information and we will get back to you with your very own bespoke price quote:
- Delivery postcode and address
- Mobile number
- Company name
- A list of required materials and their quantities
Learn more on opening a trade account.
Can I open a trade account?
Yes! Trade customers can open a B2B account to unlock bespoke pricing, B2B discounts, trade credit, loyalty points, and a dedicated personal account manager.
You can learn more here: Open a Trade Account
Can I cancel or amend my order after placing it?
Yes, if your order has not yet been processed for dispatch, cancellation/ amendments should be possible.
Our team works quickly to get your order delivered as soon as possible so it is likely that your order will be processed for dispatch within 2-3 hours of purchase.
Contact us immediately via customerservice@i4lgroup.co.uk or call 020-3481-1978 during opening hours.
If you wish to amend your order after it has been processed by our team, it will be treated as a return or a separate new order.
Read more: Returns
What is your returns policy?
Changed your mind about your order? no problem! we offer a 14 day returns period after your order is delivered.
To avail of this your order must be unused, in its original packaging, and suitable for resale.
Refunds are issued immediately after the goods are received and inspected by our team.
If an item arrives damaged or incorrect, you must notify us within 48 hours of delivery.
Prior approval is needed before returning any goods – do not return without authorization.
Special order items are exempt from returns.
Read more: Returns
Why Choose Us?
Factors |
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Other Stores |
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Customer service | Easy to reach, and eager to help | Difficult to contact |
Shipping speed | Fast and organised | Unpredictable |
Competitive pricing | Price match guarantee | What you see is what you get |
Loyalty program | Points + exclusive deals | Basic discounts |
Expert advice | Free 1-on-1 sessions | Self-service only |
Trade accounts | Bespoke pricing, trade credit, and dedicated account manager | none available |