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Insulated Render Systems

35mm Celotex TB4000 PIR Insulation Board - TB4035

35mm Celotex TB4000 PIR Insulation Board - TB4035
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35mm Celotex TB4000 PIR Insulation Board - TB4035
Guide Price: £64.78 (£77.74 inc VAT)
Price per m2: £22.49/m2 (£26.99 inc VAT)
  • Product Code: A1-114
  • Delivery Time: 1-3 working days
  • Brand: Celotex
    • (Tech. support: 01473820850)
  • Model: 1200x2400mm - 2.88m2
  • Weight: 4.23kg
Our ratings on 17-04-2026:
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35mm Celotex TB4000 PIR Insulation Board - TB4035

Width: 1200mm
Length: 2400mm
Coverage: 2.88m2
Density: 42kg/m3
Weight/m2: 1.47kg
Weight: 4.23kg
Thermal Conductivity: 0.023W/mK
R-Value: 1.55m2K/W

Celotex TB4035 is targeted at cut-to-fit applications between rafters or joists and enables users to achieve lower U-values with a single layer of insulation than has previously been possible. TB4012 is also appropriate for use in floors and walls. With low emissivity foil facings, TB4012 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).

Note:

  • Would also be known as TB3035 from January 2018.

APPLICATIONS

  • Pitched Roofs
  • Flat Roofs
  • Solid Masonry Walls
  • Timber Framed & Steel Framed Systems
  • Floors
CHARACTERISTICS
  • Specifically designed to eliminate thermal bridges
  • The thinnest PIR insulation
  • Standard board size of 1200mm x 2400mm
  • Easy to cut and shape
  • Low emissivity foil facings giving improved thermal insulation
  • High performance within cavity air spaces
  • Long-term energy savings for buildings
CERTIFICATION
  • CE marking compliance to BS EN 13165
  • Manufactured in accordance with quality management system ISO 9001 and environmental management system ISO 14001
  • Achieves an A+ rating when compared to the BRE Green Guide 2008
25mm Celotex CW4000 Rigid PIR Cavity Insulation Board (pack of 20)
Brand: Celotex Model: 1200mm x 450mm - 10.8m
Delivery Time: 1 - 5 working days
25mm Celotex CW4000 Rigid PIR Cavity Insulation Board (pack of 20)
25mm Celotex CW4000 is an insulation board aimed specifically at partial fill cavity wall applications. It comprises a polyisocyanurate rigid foam insulation core, with a thermal conductivity of 0.022 W/mK and low emissivity aluminium foil facings on both sides. CW4000 is manufactured from rigi..
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70mm Celotex CW4000 Rigid PIR Cavity Insulation Board (pack of 7)
Brand: Celotex Model: 1200x450mm - 3.78m2
Delivery Time: 1 - 5 working days
70mm Celotex CW4000 Rigid PIR Cavity Insulation Board (pack of 7)
70mm Celotex CW4000 is an insulation board aimed specifically at partial fill cavity wall applications. It comprises a polyisocyanurate rigid foam insulation core, with a thermal conductivity of 0.022 W/mK and low emissivity aluminium foil facings on both sides. CW4000 is manufactured from rigi..
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75mm Celotex CW4075 - Rigid PIR Cavity Insulation Board (pack of 8) CW4000
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Brand: Celotex Model: 1200mm x 450mm - 4.32m2
Delivery Time: 1 - 5 working days
75mm Celotex CW4075 - Rigid PIR Cavity Insulation Board (pack of 8) CW4000
75mm Celotex CW4000 is an insulation board aimed specifically at partial fill cavity wall applications. It comprises a polyisocyanurate rigid foam insulation core, with a thermal conductivity of 0.022 W/mK and low emissivity aluminium foil facings on both sides. CW4000 is manufactured from rigi..
Guide Price: £69.95
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65mm Celotex CW4000 Rigid PIR Cavity Insulation Board (pack of 7)
Brand: Celotex Model: 1200mm x 450mm - 3.78m2
Delivery Time: 1 - 5 working days
65mm Celotex CW4000 Rigid PIR Cavity Insulation Board (pack of 7)
65mm Celotex CW4000 is an insulation board aimed specifically at partial fill cavity wall applications. It comprises a polyisocyanurate rigid foam insulation core, with a thermal conductivity of 0.022 W/mK and low emissivity aluminium foil facings on both sides. CW4000 is manufactured from rigi..
Get Best Price
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27.5mm Celotex PL4015 - 15mm PIR Insulation Bonded to 12.5mm Plasterboard (PL4000) 27.5mm Celotex PL4015 - 15mm PIR Insulation Bonded to 12.5mm Plasterboard (PL4000)
Brand: Celotex Model: 1200x2400 - 2.88m2
Delivery Time: 1 - 5 working days
27.5mm Celotex PL4015 - 15mm PIR Insulation Bonded to 12.5mm Plasterboard (PL4000)
Celotex PL4015 is a high performance thermal insulation board where the 15mm PIR insulation is bonded to 12.5mm tapered edge plasterboard. PL4015 is manufactured from rigid polyisocyanurate (PIR) using a blend of blowing agents that have zero ozone depletion potential (zero ODP) and low global warmi..
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60mm Celotex CW4060 - Rigid PIR Cavity Insulation Board (pack of 10) CW4000
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Brand: Celotex Model: 1200mm x 450mm - 4.32m2
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60mm Celotex CW4060 - Rigid PIR Cavity Insulation Board (pack of 10) CW4000
60mm Celotex CW4000 is an insulation board aimed specifically at partial fill cavity wall applications. It comprises a polyisocyanurate rigid foam insulation core, with a thermal conductivity of 0.022 W/mK and low emissivity aluminium foil facings on both sides. CW4000 is manufactured from rigi..
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