Rockwool RWA45 (All Sizes)
Rockwool RWA45 (All Sizes)
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£309.65 £371.58
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Rockwool RWA45 (All Sizes)

SKU: rwa4525

Est Delivery between and .

Next Day Delivery on Orders placed before 11am (ex. weekends)

Order now and get free delivery on all Rockwool orders over £300 ex vat.

Estimated Lead Time on 50, 75 and 100mm = 5-7 Working Days
Estimated Lead Time on 25, 30, 40 and 60mm = 8 Weeks

The following sizes are sold by the pallet 25mm, 30mm, 40mm and 60mm

50mm, 75mm and 100mm are sold by the pack

Thickness Slabs Per Pack Pack Coverage Packs Per Pallet
25mm 16 11.52m2 12
30mm 12 8.64m2 16
40mm 12 8.64m2 16
50mm 9 6.48m2 16
60mm 8 5.76m2 16
75mm 6 4.32m2 20
100mm 4 2.88m2 20


Rockwool Acoustic insulation RWA45

Rockwool introduces these high-standard semi-rigid, flexible resin bonded slabs specifically for use in acoustic, thermal and fire insulation. These slabs are built in a number of thickness and densities in order to suit maximum requirements. The RWA45 slabs are ideal for multiple applications including thermal insulation for walls, floors, boiler rooms and roofs.


    • Water repellent
    • Cost effective
    • Excellent thermal, acoustic and fire insulation
    • Resists high temperatures
    • No maintenance
    • Black or white tissues and aluminum foil facings available


    • Board Thickness: 25mm or 30mm or 40mm or 50mm or 60mm or 75mm or 100mm
    • Board Size: 1200 x 600+
    • Stress required to produce 10% compression (kN/m2): 3.0
    • Stress required to reach elastic limit (kN/m2): 3.5
    • Displacement at 5 kN/m2 stress: 16.5 %
    • Brand: Rockwool
    • Fire: assessed by LPC as a suitable product for upgrading the fire resistance of dense concrete slabs.

Environmental concerns:

The RWA45 does not have Ozone Depleting potential or Global warming potential and therefore complies with the relatively modest threshold of GWP<5 included in documents such as the Code for Sustainable homes. Rockwool Ltd. is increasingly involved in recycling waste rockwool material that may be generated during installation or at end of life disposal.

Health and safety:

Current HSE 'CHIP' regulations and EU directive 97/69/EC confirms the safety of Rockwool material wool.


Rockwool slabs are certified by Lloyd's register of shipping as non-combustible materials for use on:

Fixed offshore installations
MED classed ships- DTLR MCA approval
These slabs are rated non-combustible in accordance with ISO 1182 and IMO A.799.

Length 1200mm
Width 600mm
Coverage 0.72m2
Thermal Conductivity 0.035 W/mK
Material Type Rockfibre

Est Delivery between and .

Next Day Delivery on Orders placed before 11am (ex. weekends)

Delivery will always take place on a weekday (Mon - Fri).
For information on delivery costs and more view our delivery info page.

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