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Cavity and Internal Wall Insulation

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Shop our high quality cavity and internal wall insulation products to stop heat from escaping through your walls. Our products can be used to insulate a wide range of applications, available in a choice of lengths & widths.
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Rockwool Sound Insulation Slab 1200 x 400 x 100mm (2.88m²)
Product Code: 773734

Rockwool Sound Insulation Slab 1200 x 400 x 100mm (2.88m²)

Retail price
£39.73 per pack
£33.11 ex. vat
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Rockwool RWA45 Semi-Rigid Acoustic Insulation Slab 100mm x 1200mm x 600mm (2.88m2 pack)
4.9 (16 reviews)
Product Code: 961938

Rockwool RWA45 Semi-Rigid Acoustic Insulation Slab 100mm x 1200mm x 600mm (2....

Retail price
£39.43 per pack
£32.86 ex. vat
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Rockwool RWA45 50mm Acoustic Insulation Slab 1200mm x 600mm 6.48m2/ Pack
Product Code: 767866

Rockwool RWA45 50mm Acoustic Insulation Slab 1200mm x 600mm 6.48m2/ Pack

Retail price
£30.12 per pack
£25.10 ex. vat
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Rockwool Ablative Coated Batt 50mm x 1200mm x 600mm 0.72m2/ Pack
Product Code: 654815

Rockwool Ablative Coated Batt 50mm x 1200mm x 600mm 0.72m2/ Pack

Retail price
£23.12 each
£19.27 ex. vat
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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
£72.17 per pack
£60.14 ex. 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
£28.31 per pack
£23.59 ex. vat
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Kingspan Kooltherm K108 Partial Fill Cavity Wall Insulation 1200mm x 450mm x 75mm
Product Code: 381869

Kingspan Kooltherm K108 Partial Fill Cavity Wall Insulation 1200mm x 450mm x ...

Retail price
£111.59 per pack
£92.99 ex. 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
£65.20 per pack
£54.33 ex. vat
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Kingspan Kooltherm K106 Full Fill Cavity Wall Insulation Board 1200mm x 450mm x 90mm
Product Code: 881334

Kingspan Kooltherm K106 Full Fill Cavity Wall Insulation Board 1200mm x 450mm...

Retail price
£85.45 per pack
£71.21 ex. 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
£30.84 per pack
£25.70 ex. 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
£34.91 per pack
£29.09 ex. 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
£74.11 per pack
£61.76 ex. 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
£50.92 per pack
£42.43 ex. vat
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Product Code: 848608

Knauf Acoustic Roll Ready Cut 100mm 10.30m 3 x 400 12.36m2 Per Pack

Retail price
£57.40 per pack
£47.83 ex. vat
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Product Code: 848595

Knauf Acoustic Roll Ready Cut 25mm 11.10m 4 x 600 26.64m2 Per Pack

Retail price
£51.79 per pack
£43.16 ex. vat
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Product Code: 848611

Knauf Dritherm Cavity Slab 32 100mm 455 x 1200mm 3.276m2 Per Pack

Retail price
£38.80 per pack
£32.33 ex. vat
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Product Code: 848622

Knauf Dritherm Cavity Slab 37 150mm 455 x 1200mm 4.368m2

Retail price
£31.03 per pack
£25.86 ex. vat
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Showing 1—28 items of 31

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Visqueen Polyethylene Damp Proof Course is a black, flexible 0.5mm damp proof course suitable for masonry wall constructions. It is supplied in 30m length rolls and the following widths: 100mm, 112.5mm, 150mm, 225mm, 300mm, 337.5mm, 450mm, 600mm, 900mm and 1200mm.
Range Description
Damp Proof Course
Brand Name
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Manufacturer Model No
RS052159
Length
30 m
Thickness
0.70 mm
Width
112.50 mm
Weight
1.70 kg
Material
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Colour
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Coverage
3.375 m2
Pack Quantity
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Certifications Met
CE Mark to EN 14909
Type
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£52.75
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5 (2 reviews)
Gyproc Fireline Plasterboard is a fire resistant plasterboard that consists of an aerated gypsum core with glass fibre and other additives encased in, and firmly bonded to, strong paper liners that are pink. This product is suitable for Drylining, wall lining and ceiling systems where increased fire protection is essential. This tapered edged plasterboard is perfect protection for structural steel.
Length
2400 mm
Thickness
12.5 mm
Width
1200 mm
Weight
30.90 kg
Colour
Brown; Pink
Edge Detail
Tapered Edge
Fire Retardant
Yes
Coverage
2.88m2
Certifications Met
EN520 Type F
Type
Fire Board
Made To Order
N
Manufacturer Model No
01886/2
Brand Name
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Range Description
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£14.95
per sheet (Inc. VAT)
+
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This TB4000 PIR insulation board by Celotex is ideal for overcoming thermal bridging. This board is a thin 20mm high-performance board suitable for use in a number of applications including roof, wall and floor systems.
Brand Name
Celotex
Range Description
Insulation Board
Manufacturer Model No
TB4020
Made To Order
N
Dimension 3
20.0
Dimension 1
2400.0
Dimension 2
1200.0
Length
2400 mm
Thickness
20 mm
Width
1200 mm
Material
PIR
Usage
Suspended Floor, Solid Floor, Partition Wall, Roof
Coverage
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Fire Retardant
Y
Thermal Conductivity
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Type
Insulation Boards
£37.22
per sheet (Inc. VAT)
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This multi-purpose insulation board is suitable for a number of applications including roof, wall and floor systems. Featuring foil facings, this board is manufactured from tough polyisocyanurate, with an ideal mix of blowing agents acquiring zero ozone depletion potential and a low global warming impact.
Range Description
Insulation Board
Brand Name
Celotex
Manufacturer Model No
XR4000
Made To Order
N
Length
2400 mm
Thickness
150 mm
Width
1200 mm
Material
PIR
Usage
Suspended Floor, Solid Floor, Partition Wall, Roof
Coverage
23.04 m2
Fire Retardant
N
Thermal Conductivity
0.022 W/mK
Type
Insulation Boards
£158.90
per sheet (Inc. VAT)
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Visqueen Polyethylene Damp Proof Course (DPC) 112.5mm x 30m
Visqueen Polyethylene Damp Proof Course (DPC) 112.5mm x 30m
Visqueen Polyethylene Damp Proof Course is a black, flexible 0.5mm damp proof course suitable for masonry wall constructions. It is supplied in 30m length rolls and the following widths: 100mm, 112.5mm, 150mm, 225mm, 300mm, 337.5mm, 450mm, 600mm, 900mm and 1200mm.
£52.75 per pack (Inc. VAT)
British Gypsum Gyproc Fireline Plasterboard Tapered Edge 2400mm x 1200mm x 12.5mm (2.88m²/ Sheet)
British Gypsum Gyproc Fireline Plasterboard Tapered Edge 2400mm x 1200mm x 12.5mm (2.88m²/ Sheet)
Gyproc Fireline Plasterboard is a fire resistant plasterboard that consists of an aerated gypsum core with glass fibre and other additives encased in, and firmly bonded to, strong paper liners that are pink. This product is suitable for Drylining, wall lining and ceiling systems where increased fire protection is essential. This tapered edged plasterboard is perfect protection for structural steel.
£14.95 per sheet (Inc. VAT)
Celotex TB4020 General Application Insulation Board 20mm x 1200mm x 2400mm (2.88m²/Sheet)
Celotex TB4020 General Application Insulation Board 20mm x 1200mm x 2400mm (2.88m²/Sheet)
This TB4000 PIR insulation board by Celotex is ideal for overcoming thermal bridging. This board is a thin 20mm high-performance board suitable for use in a number of applications including roof, wall and floor systems.
£37.22 per sheet (Inc. VAT)
Celotex XR4165 General Application Insulation Board 150mm x 1200mm x 2400mm (2.88m²/Sheet)
Celotex XR4165 General Application Insulation Board 150mm x 1200mm x 2400mm (2.88m²/Sheet)
This multi-purpose insulation board is suitable for a number of applications including roof, wall and floor systems. Featuring foil facings, this board is manufactured from tough polyisocyanurate, with an ideal mix of blowing agents acquiring zero ozone depletion potential and a low global warming impact.
£158.90 per sheet (Inc. VAT)
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