Insulation

Mineral Wool for Cavity External Walls

In this category you will find all of the mineral wool insulation products suitable for the insulation of cavity external walls. Glass wool insulation offers great thermal performance as well as acoustic capabilities. The product can also be used for the sound insulation and will greatly improve the acoustic performance of the building element. Cavity wall batts and slabs are rot proof and non-hygroscopic. Our mineral wool slabs do not sustain vermin and will not encourage the growth of fungi, mould or bacteria. Please check the product list below.

100mm Rockwool Cavity Wall Insulation Batts 1200x455 (pack of 6)

100mm Rockwool Cavity Wall Insulation Batts 1200x455 (pack of 6)

Rockwool Cavity provides a completely reliable and cost-effective method of insulating new masonry cavity walls.
Rockwool

£15.8419.01 inc VAT) Click to view discounts

5 or more: £15.58 (£18.70 inc VAT)
10 or more: £15.32 (£18.38 inc VAT)
20 or more: £14.93 (£17.92 inc VAT)
80 or more: £11.50 (£13.80 inc VAT)

80mm Rockwool Cavity Wall Insulation Batts 1200x455 (pack of 8)

80mm Rockwool Cavity Wall Insulation Batts 1200x455 (pack of 8)

Rockwool Cavity provides a completely reliable and cost-effective method of insulating new masonry cavity walls.
Rockwool

£17.0020.40 inc VAT) Click to view discounts

5 or more: £16.73 (£20.08 inc VAT)
10 or more: £16.45 (£19.74 inc VAT)
20 or more: £16.03 (£19.24 inc VAT)

50mm Rockwool Cavity Wall Insulation Batts 1200x455 (pack of 12)

50mm Rockwool Cavity Wall Insulation Batts 1200x455 (pack of 12)

Rockwool Cavity provides a completely reliable and cost-effective method of insulating new masonry cavity walls.
Rockwool

£18.4322.12 inc VAT) Click to view discounts

5 or more: £18.13 (£21.76 inc VAT)
10 or more: £17.83 (£21.40 inc VAT)
20 or more: £17.37 (£20.84 inc VAT)

85mm Knauf DriTherm 37 Standard Cavity Wall Insulation Slabs 1200x455 (pack of 8)

85mm Knauf DriTherm 37 Standard Cavity Wall Insulation Slabs 1200x455 (pack of 8)

DriTherm 37 Cavity Slabs are for the thermal insulation of masonry cavity external walls, either partially filling or fully filling the cavity. Thermal conductivity - 0.037 W/mK
Knauf

£23.3328.00 inc VAT) Click to view discounts

5 or more: £22.95 (£27.54 inc VAT)
10 or more: £22.57 (£27.08 inc VAT)
20 or more: £21.99 (£26.39 inc VAT)

85mm Knauf DriTherm 32 Ultimate Cavity Wall Insulation Slabs 1200x455 (pack of 5)

85mm Knauf DriTherm 32 Ultimate Cavity Wall Insulation Slabs 1200x455 (pack of 5)

DriTherm 32 Cavity Slabs are for the thermal insulation of masonry cavity external walls, either partially filling or fully filling the cavity. Thermal conductivity - 0.032 W/mK
Knauf

£24.7429.69 inc VAT) Click to view discounts

5 or more: £24.34 (£29.21 inc VAT)
10 or more: £23.94 (£28.73 inc VAT)
20 or more: £23.33 (£28.00 inc VAT)

65mm Knauf DriTherm 37 Standard Cavity Wall Insulation Slabs 1200x455 (pack of 10)

65mm Knauf DriTherm 37 Standard Cavity Wall Insulation Slabs 1200x455 (pack of 10)

DriTherm 37 Cavity Slabs are for the thermal insulation of masonry cavity external walls, either partially filling or fully filling the cavity. Thermal conductivity - 0.037 W/mK
Knauf

£25.0030.00 inc VAT) Click to view discounts

5 or more: £24.59 (£29.51 inc VAT)
10 or more: £24.18 (£29.02 inc VAT)
20 or more: £23.57 (£28.28 inc VAT)

75mm Knauf DriTherm 32 Ultimate Cavity Wall Insulation Slabs 1200x455 (pack of 6)

75mm Knauf DriTherm 32 Ultimate Cavity Wall Insulation Slabs 1200x455 (pack of 6)

DriTherm 32 Cavity Slabs are for the thermal insulation of masonry cavity external walls, either partially filling or fully filling the cavity. Thermal conductivity - 0.032 W/mK
Knauf

£26.3631.63 inc VAT) Click to view discounts

5 or more: £25.94 (£31.13 inc VAT)
10 or more: £25.51 (£30.61 inc VAT)
20 or more: £24.86 (£29.83 inc VAT)

100mm Knauf DriTherm 37 Standard Cavity Wall Insulation Slabs 1200x455 (pack of 12)

100mm Knauf DriTherm 37 Standard Cavity Wall Insulation Slabs 1200x455 (pack of 12)

DriTherm 37 Cavity Slabs are for the thermal insulation of masonry cavity external walls, either partially filling or fully filling the cavity. Thermal conductivity - 0.037 W/mK
Knauf

£32.2038.64 inc VAT) Click to view discounts

5 or more: £31.67 (£38.00 inc VAT)
10 or more: £31.14 (£37.37 inc VAT)
20 or more: £30.35 (£36.42 inc VAT)

100mm Isover CWS 32 Cavity Wall Insulation Batts 1200x455 (pack of 6)

100mm Isover CWS 32 Cavity Wall Insulation Batts 1200x455 (pack of 6)

CWS 32 are silicone impregnated glass mineral wool slabs providing high levels of thermal insulation in masonry cavity walls. CWS 32 is designed to fully fill the cavity between two masonry leaves in external walls. Thermal Conductivity - 0.032 W/mK.
Isover

£34.1540.98 inc VAT) Click to view discounts

5 or more: £33.59 (£40.31 inc VAT)
10 or more: £33.03 (£39.64 inc VAT)
20 or more: £32.19 (£38.63 inc VAT)

100mm Knauf DriTherm 32 Ultimate Cavity Wall Insulation Slabs 1200x455 (pack of 6)

100mm Knauf DriTherm 32 Ultimate Cavity Wall Insulation Slabs 1200x455 (pack of 6)

DriTherm 32 Cavity Slabs are for the thermal insulation of masonry cavity external walls, either partially filling or fully filling the cavity. Thermal conductivity - 0.032 W/mK
Knauf

£37.2544.70 inc VAT) Click to view discounts

5 or more: £36.64 (£43.97 inc VAT)
10 or more: £36.03 (£43.24 inc VAT)
20 or more: £35.11 (£42.13 inc VAT)

85mm Isover CWS 32 Cavity Wall Insulation Batts 1200x455 (pack of 8)

85mm Isover CWS 32 Cavity Wall Insulation Batts 1200x455 (pack of 8)

CWS 32 are silicone impregnated glass mineral wool slabs providing high levels of thermal insulation in masonry cavity walls. CWS 32 is designed to fully fill the cavity between two masonry leaves in external walls. Thermal Conductivity - 0.032 W/mK.
Isover

£39.6047.52 inc VAT) Click to view discounts

5 or more: £38.95 (£46.74 inc VAT)
10 or more: £38.30 (£45.96 inc VAT)
20 or more: £37.33 (£44.80 inc VAT)

75mm Isover CWS 32 Cavity Wall Insulation Batts 1200x455 (pack of 10)

75mm Isover CWS 32 Cavity Wall Insulation Batts 1200x455 (pack of 10)

CWS 32 are silicone impregnated glass mineral wool slabs providing high levels of thermal insulation in masonry cavity walls. CWS 32 is designed to fully fill the cavity between two masonry leaves in external walls. Thermal Conductivity - 0.032 W/mK.
Isover

£44.0052.80 inc VAT) Click to view discounts

5 or more: £43.28 (£51.94 inc VAT)
10 or more: £42.56 (£51.07 inc VAT)
20 or more: £41.48 (£49.78 inc VAT)