



Trust Pilot Rated 4.6
Free Delivery Over £400 ex vat
Trust Pilot Rated 4.6
Free Delivery Over £400 ex vat
Trust Pilot Rated 4.6
Free Delivery Over £400 ex vat
SKU: RKW-61347
Safe & Secure Payments
The 75mm Rockwool RW3 Acoustic Sound Insulation Slab is a high-quality, semi-rigid insulation solution that provides excellent thermal, acoustic, and fire performance. It is designed for use in various building projects.
This insulation slab is specifically engineered to reduce unwanted noise and prevent sound leakage, creating a quieter and more comfortable living environment. It has an A1 rating on the Euroclass scale, offering maximum fire protection. With a thermal conductivity of 0.034 W/mK, it also provides effective thermal insulation for your home.
The Rockwool RW3 Acoustic Sound Insulation Slab is versatile and reliable, making it suitable for general building projects as well as specialized applications in commercial, leisure, and industrial buildings.
The Rockwool RW3 Acoustic Sound Insulation Slab offers exceptional performance in terms of thermal insulation, acoustic insulation, and fire resistance. With a thermal conductivity of 0.034 W/mK, it effectively protects the thermal envelope of your home, reducing heat loss and improving energy efficiency. The dense and semi-rigid structure of the slab inhibits sound vibrations, making it an excellent choice for reducing noise transmission between rooms. Additionally, the A1 non-combustible rating ensures maximum fire protection, providing peace of mind for your building.
The Rockwool RW3 Acoustic Sound Insulation Slab is easy to install. It has a soft, fibrous texture and can be easily cut with a serrated blade to fit your specific requirements. It is recommended to store the slabs indoors to keep them dry and in optimal condition.
The Rockwool RW3 Acoustic Sound Insulation Slab is certified as a non-combustible material for use in fixed offshore installations and MED classed ships. It is rated non-combustible according to ISO 1182 and IMO A. 799. Additionally, it meets the Euroclass A1 non-combustible standard in accordance with BS EN 13501-1. The insulation slab is also CE and Key marked in accordance with BS EN 13162:2012 + A1:2015.
Rockwool is a market-leading brand known for its acoustic insulation solutions. The RW slab range offers outstanding thermal, acoustic, and fire insulation properties with lifelong durability. RW3 insulation slabs have a Lambda value of 0.034 W/mK and are available in various thicknesses. They can be manufactured with or without facings, including non-woven mineral black tissue, non-woven mineral white tissue, and aluminum foil. Slabs with aluminum foil facings provide superior sound-deadening insulation.
Orders under £200* Ex Vat
Orders between £200 - £400* Ex Vat
Orders over £400* Ex Vat
SERVICED LOCATIONS
We offer our customers free delivery* when you spend £400 plus vat or more. For orders less than £400 ex VAT there is a delivery charge of £75 ex VAT. This will be calculated within the checkout process. We only accept orders Monday through Friday. We do not provide delivery on weekends.
This is subject to change given the current lack of drivers servicing the UK. We will do our best to work with all orders that may be in affected areas.** Extra delivery charges may apply to orders in Scotland and the following postcodes**
Currently affected areas : IP, NR, CA, TD, CT, PO, SO, BH, DT, EX, PL, SP, TA, TQ, TR, LL, HR, SY **
This is currently due to the lack of availabily of drivers in these service areas and limited supply in these areas, thus a custom shipping service charge may apply. (£250). Please use the shipping calculor to give you an accurate shipping price based on your post code. We apologise in advance if this occurs for your order. Before placing an order please get in touch with the team and we will see if anything can be done for your order specifically.
There are parts of the UK that we don't deliver to and this will be marked at checkout. (N Ireland and Scotish Highlands). If this occurs upon your checkout, please reach out the team and we will see what we can do via a 3rd party supplier.
PREFERED DELIVERY TIMES
We offer this service to alleviate confusion for you and reduce communication for us all. It gives us an idea on when you would the order to be delivered. It is NOT a garaunteed delivery date. .
We understand scheduling of larger materials to your project is important, thus having your preference is very helpful for us. Please note this works in tandem with the availability of the product. We can NOT fulfill any orders before the avability days set on the product, even if the date insert tool allows it.
There may be situations where if specified a preference date is given, we may not always be able to deliver on that date. As it also linked to you delivery location, the closest warehouse logistics rotar, availability of the product and more. We have simply offered this to help our customers out, please be reasonable with your expectations in these difficult times. We WILL do our best to comunicate accurate delivery times via phone or email after the order is placed, so no need to worry.
After you specified a date we will do our best to deliver on that date, you will be notified within 24-48 hours if we can not fill that day but will strive to get a slot as close as possible to that date. We do not deliver on weekends, so all orders specified with weekend delivery will be shifted to the week after.
On weekdays, our cut-off time for purchases is 1 p.m. Orders must be placed by 1 p.m. on Monday through Thursday to be delivered the next day if they are applicable for next day. For example, an order placed after 2 p.m. on Friday will be sent out on Monday afternoon (if it is not too late).
PRODUCT DELIVERY TIMES
The vast majority of our orders are dispatched within 2–5 working days. However, if you need a customized or bespoke item, things will take longer to arrive. Some goods are on allocation or short supply as a result of COVID 19 and the Brexit. We may be forced to offer an equivalent high-quality substitute product at no extra cost to our customer from time to time.
The delivery charge is applied for shipments to England. If you live in Scotland or Wales, one of our customer care specialists will contact. We do everything we can to make sure packages arrive on the date promised.
If you change the delivery date given at the time of purchase, you will be notified by email or phone. We reserve the right to charge a failed delivery fee if access is restricted for the car specified on the order, and a delivery cannot be completed.
Every transaction is recorded, and the delivery fees are determined on whether or not the recipient is ready to receive the package. This covers manual or automated offloading of heavy items. Offloading equipment, such as a tail lift or forklift, may be requested; however, there may be an additional fee if the site is difficult to access or the products are of considerable size..
On weekdays, our cut-off time for purchases is 1 p.m. Orders must be placed by 1 p.m. on Monday through Thursday to be delivered the next day if they are applicable for next day. For example, an order placed after 2 p.m. on Friday will be sent out on Monday afternoon (if it is not too late).
RESTRICTED ACCESS
If We Or A Supplier Attempt A Delivery And Customer Refuses To Deliver, We Are Not Liable For Any Losses Incurred As A Result Of Our Failure To Notify Us Or The Supplier About Any Access Limitations
At The Time Of Placing The Purchase Or 24 Hours Before Delivery. Delivery Will Be Managed With Below Partners Or 3rd Party Fulfilment.
ACCEPTING YOUR DELIVERY
Upon receiving your delivery, please thoroughly examine all items before signing.
If you notice any issues, such as damage or defects, please refuse the delivery and get in touch with us immediately by calling 02039 916 406 or email sales@buildersinsulation.co.uk.
Important Reminder: Deliveries signed as “unchecked” will be considered to have been received in good condition.
Once your order is delivered to the specified address, responsibility for any loss or damage is transferred to you.
We believe in keeping our pricing transparent. Rather than embedding transport costs into product prices, we calculate carriage charges based on the size and weight of your order. These charges are clearly displayed separately during checkout, ensuring clarity and fairness.
155,000+
Product items shipped2958+
Successful orders98%
Customer satisfaction69%
Repeat Trade Order RateExperience the Builders Insulation Difference
Affiliations
Best Seller
5
Best Seller
5