Rockwool RWA45 Acoustic Insulation Slabs | 100mm (2.88m2 per Pack)
Pros
- Stone wool slabs give excellent thermal, acoustic and fire performance
- Euroclass A1 non-combustible rating for added fire safety
- Water-repellent finish holds up well in partition wall and floor voids
Cons
- Rigid slabs are less forgiving than roll insulation around odd joist spacing
Specifications
- Material
- Stone Wool
- Price tier
- Mid-range
- Size
- 100mm
How it compares in Loft & Wall Insulation
We list 20 loft & wall insulation products, priced from £15.98 to £563.00. At £53.48 this one is the 12th cheapest of them — 8 cost more. The average across the subcategory is £104.37 and the midpoint is £50.49, so it lands £50.89 below the average.
Its 4.8-star score sits 0.48 above the loft & wall insulation average of 4.32, with 1 of the 20 rated higher. Its 11 Amazon reviews make it the 14th most-reviewed here, against a subcategory average of 401.
Price position in Loft & Wall Insulation
Splitting the subcategory into three price bands puts this product in the Mid-range band (£45.59–£64.99), which holds 7 of 20 products and averages £53.22 at 4.46 stars.
| Band | Range | Products | Average price | Average rating |
|---|---|---|---|---|
| Budget | £14.38–£44.99 | 7 | £30.09 | 4.34 |
| Mid-rangeThis one | £45.59–£64.99 | 7 | £53.22 | 4.46 |
| Premium | £84.99–£563.00 | 6 | £247.99 | 4.13 |
About this product
Rockwool RWA45 Acoustic Insulation Slabs are a robust solution for achieving superior thermal performance and exceptional sound dampening within your building projects. These rigid stone wool slabs offer a strong, stable base for partitioning walls and floor voids, delivering impressive levels of acoustic control where it matters most – in offices, apartments, or any space requiring reduced noise transmission.
Designed for professionals and serious DIY enthusiasts, the RWA45 slabs are particularly well-suited to projects demanding high fire safety standards. Their Euroclass A1 non-combustible rating provides a crucial layer of protection, meeting stringent building regulations and offering enhanced peace of mind. The water-repellent finish further protects against moisture ingress, ensuring longevity even when installed in challenging void environments.
While these slabs offer superior acoustic performance compared to traditional roll insulation, their rigid nature means careful consideration is needed for complex joist spacings. They are less forgiving than flexible options around unusual timber framing, so accurate measurements and planning are essential before installation. The 100mm thickness provides significant thermal insulation, contributing effectively to energy efficiency. These Rockwool slabs are a mid-range investment offering exceptional performance and durability – perfect for demanding applications where acoustic integrity is paramount.
Related attributes
FAQ
What is Rockwool RWA45 acoustic insulation best suited for?
These stone wool slabs are ideal for use in partition walls and floor voids, providing effective sound reduction. They’re particularly well-suited to applications where fire safety is a key consideration due to their Euroclass A1 rating.
What materials are the Rockwool RWA45 slabs made of?
The insulation is constructed from stone wool, offering both thermal and acoustic performance. The rigid slab design provides stability and resistance to compression.
How thick are these acoustic insulation slabs?
Each slab measures 100mm in thickness, which contributes to their sound absorption capabilities and overall performance within enclosed spaces.
What is the coverage area per pack of Rockwool RWA45?
A single pack provides a surface area of approximately 2.88 square meters, allowing for efficient coverage when installed according to manufacturer guidelines.
How does this compare to other mid-range acoustic insulation options?
Rockwool RWA45 offers excellent thermal and fire protection alongside its acoustic performance, often competing with similar stone wool products in terms of value and features within the mid-price range.
Are these slabs flexible or rigid?
These are rigid slabs designed for stable installation. However, they may be less forgiving than roll insulation when dealing with irregular joist spacing.
What is the water resistance like on these Rockwool RWA45 slabs?
The stone wool construction includes a water-repellent finish, which helps to maintain their performance in damp environments such as floor voids and partition walls.
Are there any specific safety considerations when using this product?
Due to the Euroclass A1 non-combustible rating, these slabs offer enhanced fire protection. Always follow recommended installation practices for optimal safety.
How should I maintain and clean Rockwool RWA45 acoustic insulation?
Regular cleaning with a soft brush or vacuum attachment is generally sufficient to remove dust and debris. Avoid using harsh chemicals or excessive moisture.
What warranty or return options are available for this product?
Please refer to Amazon UK’s standard returns policy for information on eligible returns and refunds for this item.
£53.48
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