20mm Celotex TB4020 PIR Insulation Board

The 20mm Celotex TB4020 is a polyisocyanurate (PIR) Insulation Board delivering exceptional thermal efficiency and straightforward installation. Featuring a low emissivity foil facing, this product suits numerous applications including Floor Insulation, walls, and roofs.

Our 20mm PIR boards measuring 2400 x 1200mm represent an excellent choice for reliable Insulation requirements. The low emissivity foil facing delivers superior thermal performance. These boards achieve a BRE Green Guide A rating, confirming their sustainability credentials. BBA certification is included, with certificates 16/5352 for Timber Frame Dwellings and 17/5405 for Pitched Roof, Dry Lining, and Floor Insulation applications.

Properties

Thickness: 20mm PIR

Length: 2400mm

Width: 1200mm

Dimensions: 2,400mm x 1,200mm x 20mm = 2.88m2

Weight: 2.42kg

Density: 42kg/m3

Material: Polyisocyanurate PIR Insulation

Profile: Improved thermal performance

Thermal Conductivity: 0.022 W/mk

R-Value: 0.9 m2K/W

Series: Celotex TB4000

Compressive Strength: 120kPa

Vapour Resistivity: 100 MNs/gm

Building Regulations: Compliant - 16/5352 | 17/5405

Finish: Low Emissivity Composite Foil Facing

Applications: Walls|Roofs ǀ Floors ǀ Ceilings

BBA Certified: Yes (no. 17/5405, 16/5352)

Reaction to Fire: Euroclass F

Edge Profile: Square Edge

Features: High-performance PIR Rigid Insulation

About

Thermal Performance - This 20mm Insulation Board provides outstanding thermal efficiency with a thermal conductivity rating of 0.022 W/m.K, enabling thinner insulation layers whilst meeting your target U-value requirements.

High Performance Facer - The low emissivity foil facing enhances thermal performance within sealed cavity spaces, delivering an improved U-value outcome.

Easy to Install - These 20mm boards are lightweight and rigid, making them simple to transport, handle, and fit on site.

BBA Certified - The Celotex TB4000 range has undergone BBA assessment and is approved for defined roof, wall and floor applications when installed according to certificate guidelines.

Sustainability - Celotex Insulation TB4000 achieves a BRE Green Guide Rating of A

Applications

Roofs - Pitched Roof Insulation - Between and Under Rafters Roofs - Flat Roof Insulation - Balconies and Terraces Roofs - Flat Roof Insulation - Between and Under Joists Walls - External Wall Insulation - Upgrading Cavity Walls Walls - External Wall Insulation - Timber Frame Walls Walls - External Wall Insulation - Solid Walls Floors - Ground Floor - Beam and Block Floors Floors - Ground Floor Insulation - Concrete Slab Ground Floors Floors - Ground Floor Insulation - Upgrading Concrete Slab Floors Floors - Ground Floor Insulation - Suspended Timber Floors

Celotex PIR Insulation

This 20mm PIR Insulation Board is recognised for its excellent thermal performance, delivering substantial insulation value in a compact thickness. Widely selected by contractors and builders for its high performance and broad suitability, it enhances building energy efficiency, reduces heating and cooling expenses, and creates a more comfortable living space.

Info

Browse our Celotex range and refine by thickness or coverage using the left-hand filters. For guidance on product suitability or bulk quotations, contact us on +4402038839057, email sales@insulationbee, or use Live Chat - Lowest UK Insulation Prices.