45mm Celotex TB4045 PIR Insulation Board

The 45mm Celotex TB4045 is a polyisocyanurate (PIR) Insulation Board delivering exceptional thermal performance and straightforward installation. Featuring a low emissivity foil facing, this product suits multiple applications including Floor Insulation, walls, and roofs.

These lightweight 45mm PIR boards measuring 2400 x 1200mm provide dependable Insulation for demanding projects. The low emissivity foil facing enhances thermal performance in sealed cavities. The product achieves a BRE Green Guide A rating, confirming its environmental credentials. BBA certification covers applications including Timber Frame Dwellings (16/5352) and Pitched Roof, Dry Lining, and Floor Insulation (17/5405).

Properties

Thickness: 45mm PIR

Length: 2400mm

Width: 1200mm

Dimensions: 2,400mm x 1,200mm x 45mm = 2.88m2

Weight: 5.44kg

Density: 42kg/m3

Material: Polyisocyanurate PIR Insulation

Profile: Improved thermal performance

Thermal Conductivity: 0.022 W/mk

R-Value: 2.1 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 45mm Insulation Board delivers superior thermal performance with a thermal conductivity of 0.022 W/m.K, allowing thinner layers to meet required U-values.

High Performance Facer - The low emissivity foil facing improves thermal performance within sealed cavity spaces, achieving better U-values.

Easy to Install - These 45mm boards are lightweight and rigid, simplifying transport, handling, and installation.

BBA Certified - Celotex TB4000 holds BBA approval for specified roof, wall and floor applications when installed and maintained according to certificate requirements.

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 45mm PIR Insulation Board provides excellent thermal performance in a thin profile, making it ideal for builders and contractors. The product enhances building energy efficiency, reduces heating and cooling expenses, and creates a more comfortable interior climate.

Info

Browse our full Celotex range and filter by thickness or coverage on the left. For project advice or bulk quotations, contact us on +4402038839057, email sales@insulationbee, or use Live Chat - Lowest UK Insulation Prices.