Rockwool RW5 Insulation Slabs

Rockwool RW5 – Premium High Density Acoustic Insulation

Rockwool RW5 insulation is engineered for projects that require increased acoustic mass and higher-density mineral wool performance. Compared to standard internal slabs, Rockwool RW5 offers enhanced sound absorption and improved structural integrity.

Manufactured from volcanic stone, Rockwool RW5 insulation slabs provide long-term durability, dimensional stability and non-combustible fire performance. They are widely specified in multi-occupancy buildings, commercial developments and residential separation walls where acoustic control is critical.

If your project demands greater density than RW3 or RWA45, Rockwool RW5 insulation is often the preferred solution.

What Is Rockwool RW5 Insulation?

Rockwool RW5 slabs are rigid mineral wool insulation boards with higher density than RW3. This increased density improves airborne sound reduction and enhances acoustic separation between rooms and floors.

Rockwool RW5 density makes it suitable for:

• Separating walls between dwellings
• Apartment floor systems
• Commercial partition walls
• High-performance acoustic systems

Acoustic Performance & Sound Reduction

Rockwool RW5 insulation is chosen for its excellent airborne sound reduction capabilities. The high-density stone wool fibres absorb sound waves and reduce noise transfer across structural elements.

Typical acoustic applications include:

• Party walls in residential buildings
• Floor separation systems
• Commercial office partitions
• Educational and healthcare buildings

Thermal Efficiency & Energy Performance

In addition to acoustic performance, Rockwool RW5 insulation slabs offer reliable thermal insulation properties. By reducing heat transfer through walls and floors, RW5 helps improve indoor comfort and overall building energy efficiency.

Benefits include:

• Improved U-value performance
• Reduced thermal bridging
• Long-term stability without sagging Support for Part L compliance

Fire Resistance & Safety

Rockwool RW5 insulation is non-combustible mineral wool. It can withstand high temperatures without contributing to flame spread, making it suitable for fire-rated wall and floor systems.

Applications include:

• Multi-storey residential developments
• Commercial buildings
• Schools and public facilities
• Refurbishment projects requiring improved fire safety

Available Rockwool RW5 Thickness Options

At Insulation Point, we supply Rockwool RW5 insulation slabs in multiple thicknesses, including:

• 25mm Rockwool RW5
• 30mm Rockwool RW5
• 50mm Rockwool RW5
• 75mm Rockwool RW5
• 100mm Rockwool RW5

Rockwool RW5 Density – Why It’s Important

The density of Rockwool RW5 insulation is one of its key performance advantages. Higher density provides:

• ✔ Increased sound absorption
• ✔ Improved acoustic mass
• ✔ Greater structural stability
• ✔ Enhanced resistance to compression

Sustainable Mineral Wool Solution

Rockwool RW5 insulation is manufactured from natural volcanic rock and recyclable materials. It contributes to sustainable construction by:

• Improving energy efficiency
• Reducing long-term energy consumption
• Offering durable, long-lasting performance
• For environmentally responsible construction projects, mineral wool insulation remains a trusted choice.

Rockwool RW5 Insulation – Competitive UK Supply

At Insulation Point, we provide competitive pricing on Rockwool RW5 insulation slabs across all available thicknesses. Whether you are ordering for a commercial development or a residential build, we offer:

• Trade pricing
• Bulk discounts
• Fast UK delivery
• Technical product advice