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Knauf Insulation Cavity and Internal Wall Insulation

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When you’re looking for thermal insulation for a construction project, or you need to improve energy efficiency in an existing building, it’s worth investing in quality cavity wall insulation. In our wide range of wall insulation and cavity insulation you’ll find glass mineral wool rolls and slabs, resin-bonded slabs, and stone wool slab options. All of our wall insulation is certified Euroclass A1 fire resistant and is suitable for external wall insulation and partition wall insulation. You’ll also find acoustic insulation to aid privacy and noise reduction from adjoining properties, above and below. With a choice of sizes and ready cut options you’ll find what you need to suit your building application.
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Knauf Dritherm Cavity Slab 37 100mm 455 x 1200mm 6.55m2 Per Pack
5 (2 reviews)
Product Code: 848602
Knauf Dritherm Cavity Slab 37 100mm 455 x 1200mm 6.55m2 Per Pack
Retail price

£61.64

per pack
£51.37 ex. vat
£5.14per item
Trade price
£52.84
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Knauf Acoustic Roll Ready Cut 50mm 13.50m 2 x 600 16.2m2 Per Pack
5 (1 review)
Product Code: 848612
Knauf Acoustic Roll Ready Cut 50mm 13.50m 2 x 600 16.2m2 Per Pack
Retail price

£81.65

per pack
£68.04 ex. vat
£40.83per item
Trade price
£73.68
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Knauf Insulation DriTherm 37 Cavity Insulation Slab 85mm 1200mm x 455mm
Product Code: 497094
Knauf Insulation DriTherm 37 Cavity Insulation Slab 85mm 1200mm x 455mm
Retail price

£51.76

per pack
£43.13 ex. vat
£6.47per item
Trade price
£44.36
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Knauf Insulation DriTherm 37 Cavity Insulation Slab  75mm 1200mm x 455mm
5 (2 reviews)
Product Code: 497095
Knauf Insulation DriTherm 37 Cavity Insulation Slab 75mm 1200mm x 455mm
Retail price

£40.49

per pack
£33.74 ex. vat
£5.06per item
Trade price
£34.72
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Knauf Insulation DriTherm 37 Cavity Insulation Slab  50mm  1200mm x 455mm
5 (1 review)
Product Code: 497107
Knauf Insulation DriTherm 37 Cavity Insulation Slab 50mm 1200mm x 455mm
Retail price

£52.90

per pack
£44.08 ex. vat
£4.41per item
Trade price
£45.35
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Knauf Acoustic Roll Ready Cut 100mm 10.30m 2 x 600 12.36m2 Per Pack
5 (3 reviews)
Product Code: 848621
Knauf Acoustic Roll Ready Cut 100mm 10.30m 2 x 600 12.36m2 Per Pack
Retail price

£109.61

per pack
£91.34 ex. vat
Trade price
£98.78
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Knauf Acoustic Roll Ready Cut 25mm 11.10m 4 x 600 26.64m2 Per Pack
Product Code: 848595
Knauf Acoustic Roll Ready Cut 25mm 11.10m 4 x 600 26.64m2 Per Pack
Retail price

£101.02

per pack
£84.18 ex. vat
£25.25per item
Trade price
£96.23
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Knauf Insulation DriTherm 32 Cavity Insulation Slab 150mm 1200mm x 455mm
Product Code: 545715
Knauf Insulation DriTherm 32 Cavity Insulation Slab 150mm 1200mm x 455mm
Retail price

£74.14

per pack
£61.78 ex. vat
£18.54per item
Trade price
£66.73
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Knauf Dritherm Cavity Slab 32 100mm 455 x 1200mm 3.276m2 Per Pack
Product Code: 848611
Knauf Dritherm Cavity Slab 32 100mm 455 x 1200mm 3.276m2 Per Pack
Retail price

£53.35

per pack
£44.46 ex. vat
£8.89per item
Trade price
£46.07
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Knauf Insulation Masonry Party Wall Slab 75mm 8.74m2
Product Code: 295475
Knauf Insulation Masonry Party Wall Slab 75mm 8.74m2
Retail price

£552.50

per pack
£460.42 ex. vat
£34.53per item
Trade price
£526.28
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Knauf Acoustic Roll Ready Cut 100mm 10.30m 3 x 400 12.36m2 Per Pack
Product Code: 848608
Knauf Acoustic Roll Ready Cut 100mm 10.30m 3 x 400 12.36m2 Per Pack
Retail price

£111.83

per pack
£93.19 ex. vat
Trade price
£106.49
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Knauf Insulation Frametherm Roll 40 140mm 2x570 9.14m2
Product Code: 961304
Knauf Insulation Frametherm Roll 40 140mm 2x570 9.14m2
Retail price

£178.24

per pack
£148.53 ex. vat
£89.12per item
Trade price
£169.68
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Knauf Insulation FrameTherm Roll 32 2800mm x 1140mm x 140mm
Product Code: 122531
Knauf Insulation FrameTherm Roll 32 2800mm x 1140mm x 140mm
Retail price

£147.65

per pack
£123.04 ex. vat
£73.83per item
Trade price
£132.91
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Knauf Insulation Rocksilk RS45 Slab 1200mm x 600mm x 100mm
Product Code: 221584
Knauf Insulation Rocksilk RS45 Slab 1200mm x 600mm x 100mm
Retail price

£83.22

per pack
£69.35 ex. vat
£16.64per item
Trade price
£74.89
Inc. VAT
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Knauf Insulation OmniFit® Insulation Roll 3400mm x 1200mm x 200mm
Product Code: 734018
Knauf Insulation OmniFit® Insulation Roll 3400mm x 1200mm x 200mm
Retail price

£60.12

per pack
£50.10 ex. vat
Trade price
£57.24
Inc. VAT
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Knauf Acoustic Roll Ready Cut 75mm 14.50m 2 x 600 17.4m2 Per Pack
Product Code: 848623
Knauf Acoustic Roll Ready Cut 75mm 14.50m 2 x 600 17.4m2 Per Pack
Retail price

£176.02

per pack
£146.68 ex. vat
Trade price
£167.66
Inc. VAT
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Knauf Insulation OmniFit® Slab 50mm 1200x600 8.64m2
Product Code: 734014
Knauf Insulation OmniFit® Slab 50mm 1200x600 8.64m2
Retail price

£55.15

per pack
£45.96 ex. vat
£4.60per item
Trade price
£52.56
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Knauf Insulation Rocksilk RS45 50mm 7.20m2
Product Code: 221587
Knauf Insulation Rocksilk RS45 50mm 7.20m2
Retail price

£73.49

per pack
£61.24 ex. vat
£7.35per item
Trade price
£70.00
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Knauf Dritherm Cavity Slab 32 125mm 455 x 1200mm 2.184m2 Per Pack
Product Code: 848594
Knauf Dritherm Cavity Slab 32 125mm 455 x 1200mm 2.184m2 Per Pack
Retail price

£61.69

per pack
£51.41 ex. vat
£15.42per item
Trade price
£52.86
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Knauf Dritherm Cavity Slab 32 75mm 455 x 1200mm 3.276m2 Per Pack
Product Code: 848615
Knauf Dritherm Cavity Slab 32 75mm 455 x 1200mm 3.276m2 Per Pack
Retail price

£74.74

per pack
£62.28 ex. vat
£12.46per item
Trade price
£64.08
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Knauf Insulation FrameTherm Roll 35 3900mm x 1140mm x 140mm
5 (1 review)
Product Code: 705826
Knauf Insulation FrameTherm Roll 35 3900mm x 1140mm x 140mm
Retail price

£98.68

per pack
£82.23 ex. vat
£49.34per item
Trade price
£93.98
Inc. VAT
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Knauf Dritherm Cavity Slab 32 85mm 455 x 1200mm 2.73m2 Per Pack
Product Code: 848626
Knauf Dritherm Cavity Slab 32 85mm 455 x 1200mm 2.73m2 Per Pack
Retail price

£68.47

per pack
£57.06 ex. vat
£13.69per item
Trade price
£58.70
Inc. VAT
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Knauf Insulation Timber Frame Party Wall Slab 60mm 11.52m2
Product Code: 295477
Knauf Insulation Timber Frame Party Wall Slab 60mm 11.52m2
Retail price

£154.69

per pack
£128.91 ex. vat
£9.67per item
Trade price
£147.23
Inc. VAT
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Knauf Insulation OmniFit® Insulation Roll 4550mm x 1200mm x 150mm
Product Code: 734019
Knauf Insulation OmniFit® Insulation Roll 4550mm x 1200mm x 150mm
Retail price

£126.97

per pack
£105.81 ex. vat
Trade price
£120.95
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Knauf Insulation FrameTherm Roll 35 6000mm x 1140mm x 90mm
Product Code: 665075
Knauf Insulation FrameTherm Roll 35 6000mm x 1140mm x 90mm
Retail price

£118.27

per pack
£98.56 ex. vat
£59.13per item
Trade price
£112.69
Inc. VAT
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Knauf Insulation Masonry Party Wall Slab 100mm 6.55m2
Product Code: 295474
Knauf Insulation Masonry Party Wall Slab 100mm 6.55m2
Retail price

£80.33

per pack
£66.94 ex. vat
£6.69per item
Trade price
£76.48
Inc. VAT
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Knauf Insulation OmniFit® Slab 70mm 1200x600 5.76m2
Product Code: 734011
Knauf Insulation OmniFit® Slab 70mm 1200x600 5.76m2
Retail price

£193.88

per pack
£161.57 ex. vat
£24.23per item
Trade price
£184.62
Inc. VAT
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Knauf Insulation FrameTherm Roll 32 4500mm x 1140mm x 90mm
Product Code: 949787
Knauf Insulation FrameTherm Roll 32 4500mm x 1140mm x 90mm
Retail price

£148.72

per pack
£123.93 ex. vat
£74.36per item
Trade price
£141.64
Inc. VAT
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Knauf Insulation OmniFit® Slab 140mm 1200x600 2.88m2
Product Code: 734008
Knauf Insulation OmniFit® Slab 140mm 1200x600 2.88m2
Retail price

£99.16

per pack
£82.63 ex. vat
£24.79per item
Trade price
£94.42
Inc. VAT
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Showing 1—29 items of 29

Related products

An A1 Non-Combustible Rock Mineral Wool slab, manufactured using Knauf Insulation's unique ECOSE® Technology and designed for use in multiple applications including internal partitions, timber and metal studs, and in between timber rafters and floor joists.
Depth
50 mm
Length
1200 mm
Thickness
50 mm
Width
600 mm
Material
Rock Mineral Wool
Colour
Brown
Thermal Conductivity
0.035 W/mK
Usage
Multi-Application
Coverage
7.2m2
Pack Quantity
10
Certifications Met
Euroclass A1 Reaction to Fire Classification, Eurofins Gold
Type
Insulation Slabs
Range Description
Rock Universal Slab
Brand Name
Knauf Insulation
Manufacturer Model No
2411339

£73.49

per pack (Inc. VAT)
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5 (7 reviews)
An A1 Non-Combustible multi-application Glass Mineral Wool slab, manufactured using Knauf Insulation's unique ECOSE® Technology, and designed for use in multiple applications in both timber and steel frame construction to allow flexibility across a range of projects.
Brand Name
Knauf Insulation
Length
1200 mm
Thickness
100 mm
Width
600 mm
Material
Glass Mineral Wool
Usage
Multi-Application, Ground floors, Internal floors, Pitched roofs at rafter level, Internal walls / partitions, Light steel frame walls, Timber frame walls
Coverage
4.32m2
Fire Retardant
Y
Acoustic
Yes
Thermal Conductivity
0.035 W/mK
Pack Quantity
6
Certifications Met
Euroclass A1 Reaction to Fire Classification, Eurofins Gold
Type
Insulation Slabs

£75.89

per pack (Inc. VAT)
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Celotex GA4000 is an easy to install polyisocyanurate (PIR) insulation board with excellent thermal performance, featuring a low emissivity foil facing. Available in thicknesses from 50mm to 100mm, it can be considered for roof, wall and floor applications.
Length
2400 mm
Thickness
75 mm
Width
1200 mm
Material
PIR
Coverage
2.88 m2
Thermal Conductivity
0.022 W/mK
Certifications Met
BBA Certificate Number 16/5352 BBA Certificate Number 17/5405
Type
Insulation Boards
Made To Order
N
Manufacturer Model No
GA4075
Brand Name
Celotex
Range Description
Insulation Board

£50.39

per sheet (Inc. VAT)
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Partial fill cavity wall PIR insulation. Fibre free rigid insulation core with aluminium foil composite to both sides. The boards are conveniently sized to co-ordinate with brick and block dimensions and allow the insertion of wall ties at the appropriate spacing.
Manufacturer Model No
CAV50
Brand Name
Ecotherm
Length
1200 mm
Thickness
50 mm
Width
450 mm
Material
Rigid polyisocyanurate PIR foam core with aluminium foil composite to both sides
Usage
New build and upgrading thermal performance of existing cavity walls
Fire Retardant
Y
Thermal Conductivity
0.022 W/mK
Type
Wall Insulation

£14.86

per sheet (Inc. VAT)
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Knauf Insulation Rocksilk RS45 50mm 7.20m2
Knauf Insulation Rocksilk RS45 50mm 7.20m2
An A1 Non-Combustible Rock Mineral Wool slab, manufactured using Knauf Insulation's unique ECOSE® Technology and designed for use in multiple applications including internal partitions, timber and metal studs, and in between timber rafters and floor joists.
£73.49 per pack (Inc. VAT)
Knauf Insulation OmniFit® Insulation Slab 1200mm x 600mm x 100mm
Knauf Insulation OmniFit® Insulation Slab 1200mm x 600mm x 100mm
An A1 Non-Combustible multi-application Glass Mineral Wool slab, manufactured using Knauf Insulation's unique ECOSE® Technology, and designed for use in multiple applications in both timber and steel frame construction to allow flexibility across a range of projects.
£75.89 per pack (Inc. VAT)
75mm x 2400mm x 1200mm Celotex PIR Insulation Board GA4000
75mm x 2400mm x 1200mm Celotex PIR Insulation Board GA4000
Celotex GA4000 is an easy to install polyisocyanurate (PIR) insulation board with excellent thermal performance, featuring a low emissivity foil facing. Available in thicknesses from 50mm to 100mm, it can be considered for roof, wall and floor applications.
£50.39 per sheet (Inc. VAT)
50mm x 1200mm x 450mm Ecotherm Eco-cavity Cavity Wall Insulation CAV50
50mm x 1200mm x 450mm Ecotherm Eco-cavity Cavity Wall Insulation CAV50
Partial fill cavity wall PIR insulation. Fibre free rigid insulation core with aluminium foil composite to both sides. The boards are conveniently sized to co-ordinate with brick and block dimensions and allow the insertion of wall ties at the appropriate spacing.
£14.86 per sheet (Inc. VAT)