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Celotex CW4000 Insulation

Celotex CW4000 (replaing the CW3000 range) is an insulation board aimed specifically at partial fill cavity wall applications.

With low emissivity foil facings, CW4000 is manufactured from rigid polyisocyanurate (PIR) using a blend of blowing agents that have zero ozone depletion potential (zero ODP) and low global warming potential (GWP).

With Celotex CW4000 you are specifying an insulation board that:

  • Is easy to fit between wall ties using cavity tie clips for retention
  • Comes in thicknesses ranging from 25mm-100mm
  • Comes in conveniently sized boards for installation between cavity wall ties
  • Includes low emissivity foil facings giving improved thermal insulation performance within cavity air spaces
  • Has excellent dimensional stability
  • Provides reliable long term energy savings for buildings
  • Is available in a standard board size of 1200mm x 450mm 


50mtr Foil Tape (Various Sizes)

50mtr Aluminium Foil Tape (Various Sizes) Aluminium foil tape is an all weather aluminum foil tap..

From: £8.34 (EX. VAT)

£8.34 (EX. VAT) | £10.01 (INC. VAT)

Celotex CW4050 Cavity Wall Insulation 1200 x 450 x 50mm (Pack 11)

Celotex CW4050 Cavity Wall PIR Insulation 11x 1200 x 450 x 50mm sheets per pack = 5.94m2 ..

From: £44.29 (EX. VAT)

£44.29 (EX. VAT) | £53.15 (INC. VAT)

Celotex CW4075 Cavity Wall Insulation 1200 x 450 x 75mm (Pack 8)

Celotex CW4075 Cavity Wall PIR Insulation 8x 1200 x 450 x 75mm sheets per pack = 4.32m2..

From: £45.80 (EX. VAT)

£45.80 (EX. VAT) | £54.96 (INC. VAT)

Celotex CW4100 Cavity Wall Insulation 1200 x 450 x 100mm (Pack 6)

Celotex CW4100 Cavity Wall PIR Insulation 6x 1200 x 450 x 100mm sheets per pack = 3.24m2 ..

From: £45.25 (EX. VAT)

£45.25 (EX. VAT) | £54.30 (INC. VAT)

Universal Retaining Clips

Universal Retaining Clips (Bag 250) Plastic retaining clips for holding back insulation to blockw..

From: £33.29 (EX. VAT)

£33.29 (EX. VAT) | £39.95 (INC. VAT)