Menu
Menu
Your Cart

20mm Celotex TB4000 PIR Insulation Board - TB4020

20mm Celotex TB4000 PIR Insulation Board - TB4020
20mm Celotex TB4000 PIR Insulation Board - TB4020
Price: £33.75 (£40.50 inc VAT)
Price per m2: £11.72/m2 (£14.06 inc VAT)
  • Product Code: A1-111
  • Delivery Time: 1-3 working days
  • Brand: Celotex
  • (Tech. support: 01473820850)
  • Model and Size: 1200x2400mm - 2.88m2
  • Weight: 2.42kg
Our ratings on 12-11-2025:
Google My Business Reviews
4.8 out of 5
Show other thicknesses

20mm Celotex TB4000 PIR Insulation Board - TB4020

Width: 1200mm
Length: 2400mm
Coverage: 2.88m2
Density: 42kg/m3
Weight/m2: 0.84kg
Weight: 2.42kg
Compressive Strength: 120kPa
Thermal Conductivity: 0.023W/mK
R-Value: 0.9m2K/W

Celotex TB4020 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 TB3012 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
Brand: Celotex Model and Size: 1200x2400mm - 63.36m2
Delivery Time: 1 - 5 working days
Celotex GD5040 is a premium performance PIR insulation bonded to 12.5mm tapered edge plasterboard. Allows for the installation of both the insulation and plasterboard in one operation, thereby reducing installation time. Simplifies compliance to current building regulations for the upgrade of i..
Get Best Price
Brand: Celotex Model and Size: FF4000 1200x2400 - 92.16m2
Delivery Time: 3 - 5 days
75mm Celotex FF4000 Underfloor Heating Board (pack of 16) Size: 1200mm x 2400mm Area per pack: 46.08m2 Thermal conductivity: 0.022 W/Mk R-Value: 3.40m2K/W Compressive strength: ≥150kPa Water vapour resistance: >150 MNs/g Weight: 2.61kg/m2   ..
Get Best Price
Brand: Celotex Model and Size: 1190x450mm - 3.24m2
Delivery Time: 2 - 4 days
90mm Celotex Thermaclass Cavity Wall 21 is a high performance rigid PIR full fill cavity insulation board with low emissivity foil facings offering enhanced thermal performance (0.021 W/m.K) within cavity air spaces. It can be installed with up to a 10mm residual cavity or as a full fill solut..
£99.30
£119.16 inc VAT
Add to Cart
60mm Celotex GS5060 PIR Insulation Board with 9.5mm Plasterboard (pack of 16)
Guide Price
Brand: Celotex Model and Size: Celotex GS5060 - 46.08m2
Delivery Time: 1 - 5 working days
Celotex GS5060 is a premium performance PIR insulation board faced with low emissivity aluminum foils on both sides and bonded to 9.5 mm tapered edge plasterboard, providing an insulation product and a plasterboard in one. The product is designed for mechanically fixed applicatio..
Guide Price: £1,651.33
£1,981.60 inc VAT
Get Best Price
40mm Celotex GS5040 PIR Insulation Board with 9.5mm Plasterboard (pack of 22)
Guide Price
Brand: Celotex Model and Size: Celotex GS5040 - 63.36m2
Delivery Time: 1 - 5 working days
Celotex GS5040 is a premium performance PIR insulation board faced with low emissivity aluminum foils on both sides and bonded to 9.5 mm tapered edge plasterboard, providing an insulation product and a plasterboard in one. The product is designed for mechanically fixed applicatio..
Guide Price: £1,942.86
£2,331.43 inc VAT
Get Best Price
Brand: Celotex Model and Size: TD4000- 2400 x 1200
Delivery Time: 1 - 5 working days
Celotex TD4000 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 bonded to a layer of 5.5mm WBP exterior grade plywood.APPLICATIONCelotex TD4000 is purpose designed for use in light traffic..
Get Best Price
This product is listed in the following categories and systems (click to show).