Rockwool RWA45 RW3 and RW5 acoustic and thermal building slab Rockwool Insulation

Rockwool (RW) Building Slabs

Acoustic and thermal building slabs - RWA45, RW3, RW4, RW5 and RW6.

Excellent thermal, acoustic and fire insulation.

Suitable for a wide range of general building applications.

Non-combustible – Euroclass A1.

Availabile in a range of densities from 45 kg/m³ to 140 kg/m³.

Reduce noise, either by impeding the transmission of sound through an element of the structure or by absorption of sound at the surface.

Made from diabase rock, which is a renewable and plentiful natural resource.

Does not contain gases that have ozone depletion potential (ODP) or global warming potential (GWP).

Thicknesses and Availability:

RWA45 (45 kg/m³ density) : 25mm, 30mm, 40mm, 50mm, 60mm, 75mm, and 100mm (some thicknesses may only be available in pallet quantities as they will need to be sourced from the manufacturer before being delivered to site)

RW3 (60 kg/m³ density): 25mm, 30mm, 40mm, 50mm, 60mm, 75mm, 90mm, and 100mm (some thicknesses may only be available in pallet quantities as they will need to be sourced from the manufacturer before being delivered to site)

RW4 (80 kg/m³ density): Special request, 100mm in pallets only. Made to order only: 50mm and 75mm can be manufactured, but require a minimum order of 16 x pallets for the 50mm and 22 x pallets for the 75mm

RW5 (100 kg/m³ density): 25mm, 30mm, 50mm, 75mm, and 100mm (some thicknesses may only be available in pallet quantities as they will need to be sourced from the manufacturer before being delivered to site)

Due to supply challenges from the manufacturer, please allow extended lead times on Rockwool products. In some cases, the lead times are as long as 12 weeks. Please feel free to contact me to check availability and lead times.

Product Information

General information about Rockwool (RW) Building Slabs

Product Application

Thermal and Acoustic Building Slabs

Rockwools versatile building slabs, RWA45, RW3, RW4 and RW5, are suitable for use in acoustic, thermal and fire protection applications in partitions, ceilings, floors, and roofs.

Product Make-up

Core

Durable non-combustable stone wool spun from volcanic rock, resin bonded into slabs.

Facings

Unfaced as standard, however, we may be able to supply tissue or foil faced slabs on request, depending on requirements

Product Properties

Thickness 25mm to 100mm
Slab Length 1.2m
Slab Width 0.6m
Slab Edge Square

Product Prices

Buy Rockwool (RW) Building Slabs

The prices and quantity discounts below are 'per pack' rates. Packs contain multiple slabs... 16 x 0.6x1.2m = 11.52m² - in this instance, there are 16 x slabs in a pack where each slab is 0.6m x 1.2m providing a total coverage of 11.52m² per pack

1 plus packs @ £2.01 per m² / £1.45 per slab = £23.18 (£27.82 inc-VAT) per pack
6 plus packs @ £1.99 per m² / £1.44 per slab = £22.98 (£27.58 inc-VAT) per pack
12 plus packs @ £1.98 per m² / £1.42 per slab = £22.77 (£27.32 inc-VAT) per pack
18 plus packs @ £1.96 per m² / £1.41 per slab = £22.57 (£27.08 inc-VAT) per pack
24 plus packs @ £1.94 per m² / £1.40 per slab = £22.36 (£26.83 inc-VAT) per pack
30 plus packs @ £1.92 per m² / £1.39 per slab = £22.16 (£26.59 inc-VAT) per pack

1 plus packs @ £3.89 per m² / £2.80 per slab = £25.20 (£30.24 inc-VAT) per pack
8 plus packs @ £3.85 per m² / £2.78 per slab = £24.98 (£29.98 inc-VAT) per pack
16 plus packs @ £3.82 per m² / £2.75 per slab = £24.76 (£29.71 inc-VAT) per pack
24 plus packs @ £3.79 per m² / £2.73 per slab = £24.53 (£29.44 inc-VAT) per pack
32 plus packs @ £3.75 per m² / £2.70 per slab = £24.31 (£29.17 inc-VAT) per pack
40 plus packs @ £3.72 per m² / £2.68 per slab = £24.09 (£28.91 inc-VAT) per pack

1 plus packs @ £5.75 per m² / £4.14 per slab = £24.85 (£29.82 inc-VAT) per pack
10 plus packs @ £5.70 per m² / £4.11 per slab = £24.63 (£29.56 inc-VAT) per pack
20 plus packs @ £5.65 per m² / £4.07 per slab = £24.41 (£29.29 inc-VAT) per pack
30 plus packs @ £5.60 per m² / £4.03 per slab = £24.19 (£29.03 inc-VAT) per pack
40 plus packs @ £5.55 per m² / £4.00 per slab = £23.97 (£28.76 inc-VAT) per pack
50 plus packs @ £5.50 per m² / £3.96 per slab = £23.75 (£28.50 inc-VAT) per pack

1 plus packs @ £7.21 per m² / £5.19 per slab = £20.77 (£24.92 inc-VAT) per pack
10 plus packs @ £7.15 per m² / £5.15 per slab = £20.59 (£24.71 inc-VAT) per pack
20 plus packs @ £7.09 per m² / £5.10 per slab = £20.41 (£24.49 inc-VAT) per pack
30 plus packs @ £7.02 per m² / £5.06 per slab = £20.22 (£24.26 inc-VAT) per pack
40 plus packs @ £6.96 per m² / £5.01 per slab = £20.04 (£24.05 inc-VAT) per pack
50 plus packs @ £6.90 per m² / £4.97 per slab = £19.86 (£23.83 inc-VAT) per pack

The prices and quantity discounts below are 'per pack' rates. Packs contain multiple slabs... 16 x 0.6x1.2m = 11.52m² - in this instance, there are 16 x slabs in a pack where each slab is 0.6m x 1.2m providing a total coverage of 11.52m² per pack

1 plus packs @ £2.71 per m² / £1.95 per slab = £31.25 (£37.50 inc-VAT) per pack
6 plus packs @ £2.69 per m² / £1.94 per slab = £30.97 (£37.16 inc-VAT) per pack
12 plus packs @ £2.66 per m² / £1.92 per slab = £30.70 (£36.84 inc-VAT) per pack
18 plus packs @ £2.64 per m² / £1.90 per slab = £30.42 (£36.50 inc-VAT) per pack
24 plus packs @ £2.62 per m² / £1.88 per slab = £30.14 (£36.17 inc-VAT) per pack
30 plus packs @ £2.59 per m² / £1.87 per slab = £29.87 (£35.84 inc-VAT) per pack

1 plus packs @ £5.01 per m² / £3.61 per slab = £28.84 (£34.61 inc-VAT) per pack
6 plus packs @ £4.96 per m² / £3.57 per slab = £28.59 (£34.31 inc-VAT) per pack
12 plus packs @ £4.92 per m² / £3.54 per slab = £28.33 (£34.00 inc-VAT) per pack
18 plus packs @ £4.88 per m² / £3.51 per slab = £28.08 (£33.70 inc-VAT) per pack
24 plus packs @ £4.83 per m² / £3.48 per slab = £27.82 (£33.38 inc-VAT) per pack
30 plus packs @ £4.79 per m² / £3.45 per slab = £27.57 (£33.08 inc-VAT) per pack

1 plus packs @ £7.43 per m² / £5.35 per slab = £32.09 (£38.51 inc-VAT) per pack
6 plus packs @ £7.36 per m² / £5.30 per slab = £31.80 (£38.16 inc-VAT) per pack
12 plus packs @ £7.30 per m² / £5.25 per slab = £31.52 (£37.82 inc-VAT) per pack
18 plus packs @ £7.23 per m² / £5.21 per slab = £31.23 (£37.48 inc-VAT) per pack
24 plus packs @ £7.16 per m² / £5.16 per slab = £30.95 (£37.14 inc-VAT) per pack
30 plus packs @ £7.10 per m² / £5.11 per slab = £30.67 (£36.80 inc-VAT) per pack

1 plus packs @ £9.91 per m² / £7.14 per slab = £28.55 (£34.26 inc-VAT) per pack
6 plus packs @ £9.83 per m² / £7.08 per slab = £28.30 (£33.96 inc-VAT) per pack
12 plus packs @ £9.74 per m² / £7.01 per slab = £28.04 (£33.65 inc-VAT) per pack
18 plus packs @ £9.65 per m² / £6.95 per slab = £27.79 (£33.35 inc-VAT) per pack
24 plus packs @ £9.56 per m² / £6.89 per slab = £27.54 (£33.05 inc-VAT) per pack
30 plus packs @ £9.48 per m² / £6.82 per slab = £27.29 (£32.75 inc-VAT) per pack

The prices and quantity discounts below are 'per pack' rates. Packs contain multiple slabs... 8 x 0.6x1.2m = 5.76m² - in this instance, there are 8 x slabs in a pack where each slab is 0.6m x 1.2m providing a total coverage of 5.76m² per pack

1 plus packs @ £4.87 per m² / £3.51 per slab = £28.06 (£33.67 inc-VAT) per pack
12 plus packs @ £4.83 per m² / £3.48 per slab = £27.81 (£33.37 inc-VAT) per pack
24 plus packs @ £4.79 per m² / £3.45 per slab = £27.57 (£33.08 inc-VAT) per pack
36 plus packs @ £4.74 per m² / £3.42 per slab = £27.32 (£32.78 inc-VAT) per pack
48 plus packs @ £4.70 per m² / £3.38 per slab = £27.07 (£32.48 inc-VAT) per pack
60 plus packs @ £4.66 per m² / £3.35 per slab = £26.82 (£32.18 inc-VAT) per pack

1 plus packs @ £9.23 per m² / £6.64 per slab = £26.57 (£31.88 inc-VAT) per pack
12 plus packs @ £9.15 per m² / £6.59 per slab = £26.34 (£31.61 inc-VAT) per pack
24 plus packs @ £9.06 per m² / £6.53 per slab = £26.10 (£31.32 inc-VAT) per pack
36 plus packs @ £8.98 per m² / £6.47 per slab = £25.87 (£31.04 inc-VAT) per pack
48 plus packs @ £8.90 per m² / £6.41 per slab = £25.63 (£30.76 inc-VAT) per pack
60 plus packs @ £8.82 per m² / £6.35 per slab = £25.40 (£30.48 inc-VAT) per pack

1 plus packs @ £13.81 per m² / £9.95 per slab = £29.84 (£35.81 inc-VAT) per pack
12 plus packs @ £13.69 per m² / £9.86 per slab = £29.57 (£35.48 inc-VAT) per pack
24 plus packs @ £13.57 per m² / £9.77 per slab = £29.31 (£35.17 inc-VAT) per pack
36 plus packs @ £13.44 per m² / £9.68 per slab = £29.04 (£34.85 inc-VAT) per pack
48 plus packs @ £13.32 per m² / £9.59 per slab = £28.78 (£34.54 inc-VAT) per pack
60 plus packs @ £13.20 per m² / £9.51 per slab = £28.52 (£34.22 inc-VAT) per pack

1 plus packs @ £18.36 per m² / £13.22 per slab = £26.44 (£31.73 inc-VAT) per pack
12 plus packs @ £18.19 per m² / £13.10 per slab = £26.20 (£31.44 inc-VAT) per pack
24 plus packs @ £18.03 per m² / £12.99 per slab = £25.97 (£31.16 inc-VAT) per pack
36 plus packs @ £17.87 per m² / £12.87 per slab = £25.73 (£30.88 inc-VAT) per pack
48 plus packs @ £17.71 per m² / £12.75 per slab = £25.50 (£30.60 inc-VAT) per pack
60 plus packs @ £17.55 per m² / £12.64 per slab = £25.27 (£30.32 inc-VAT) per pack

Limited stock of the most popular thicknesses are held at most of our depots. Where we need to bring stock in from the manufacturer, please allow up to 2 weeks for delivery

  • Generally 1 or 3 working days for delivery
  • Generally 1 to 5 working days for delivery
  • Generally 5 to 10 working days for delivery
  • Special request or made to order item, allow extended lead times. Minimum order levels may apply.
  • Please call to check availability and approximate lead times

Product availability depends upon stock levels at closest depot and delivery logistics to geographic locations

Product Performance and Guides

Product Performance, Manufacturer Downloads, and Installation Guides

Product Performance

Thermal Conductivity 0.035 - 0.038 W/mK
Fire Performance Classification A1 BS EN 13501-1
Surface Spread of Flame Non-combustable
Nominal Density 45 kg/m³ - 100 kg/m³
Vapour Resistance Negligable
Product Thickness Thermal Resistance kg/m³ kg/m²
Rockwool RWA45 25mm 25mm 0.71 m²K/W 45 kg/m³ 1.13 kg/m²
Rockwool RWA45 30mm 30mm 0.85 m²K/W 45 kg/m³ 1.35 kg/m²
Rockwool RWA45 40mm 40mm 1.14 m²K/W 45 kg/m³ 1.80 kg/m²
Rockwool RWA45 50mm 50mm 1.42 m²K/W 45 kg/m³ 2.25 kg/m²
Rockwool RWA45 60mm 60mm 1.71 m²K/W 45 kg/m³ 2.70 kg/m²
Rockwool RWA45 75mm 75mm 2.14 m²K/W 45 kg/m³ 3.38 kg/m²
Rockwool RWA45 100mm 100mm 2.85 m²K/W 45 kg/m³ 4.50 kg/m²
Rockwool RW3 25mm 25mm 0.73 m²K/W 60 kg/m³ 1.50 kg/m²
Rockwool RW3 30mm 30mm 0.88 m²K/W 60 kg/m³ 1.80 kg/m²
Rockwool RW3 40mm 40mm 1.17 m²K/W 60 kg/m³ 2.40 kg/m²
Rockwool RW3 50mm 50mm 1.47 m²K/W 60 kg/m³ 3.00 kg/m²
Rockwool RW3 60mm 60mm 1.76 m²K/W 60 kg/m³ 3.60 kg/m²
Rockwool RW3 75mm 75mm 2.2 m²K/W 60 kg/m³ 4.50 kg/m²
Rockwool RW3 100mm 100mm 2.94 m²K/W 60 kg/m³ 6.00 kg/m²
Rockwool RW4 50mm 50mm 1.47 m²K/W 80 kg/m³ 4.00 kg/m²
Rockwool RW4 75mm 75mm 2.2 m²K/W 80 kg/m³ 6.00 kg/m²
Rockwool RW4 100mm 100mm 2.94 m²K/W 80 kg/m³ 8.00 kg/m²
Rockwool RW5 25mm 25mm 0.73 m²K/W 100 kg/m³ 2.5 kg/m²
Rockwool RW5 30mm 30mm 0.88 m²K/W 100 kg/m³ 3.00 kg/m²
Rockwool RW5 50mm 50mm 1.47 m²K/W 100 kg/m³ 5.00 kg/m²
Rockwool RW5 75mm 75mm 2.2 m²K/W 100 kg/m³ 7.50 kg/m²
Rockwool RW5 100mm 100mm 2.94 m²K/W 100 kg/m³ 10.00 kg/m²

Product Certificates

Please visit the Rockwool website for product certificates.