20 mm thick.
BBA Agrément Certificate
A high-performance PIR insulation board suitable for use in floor, wall and roof applications.
Celotex TB4000 is an easy to install polyisocyanurate (PIR) insulation board with excellent thermal performance, featuring a low emissivity foil facing. Available in thicknesses from 20mm to 40mm, it can be considered for floor, wall and roof applications.
Euroclass E Reaction to Fire classification, according to BS EN 13501-1. Products with this level of classification are not provided with a rating for smoke emission.
When using Celotex TB4000, you need to satisfy yourself that use of the product meets all relevant national Building Regulations and guidance as well as local, national and other applicable standards relevant for your construction or application, including requirements in relation to fire and applicable height restrictions.
Please refer to the following product documents:
Celotex TB4000 should not be used in the external walls of buildings over 18 metres in height (England and Wales) or 11 metres in height (Scotland). Recent changes to Building Regulations mean that only non-combustible insulation or insulation of limited combustibility can be used in buildings of that height.
J31/10 Warm deck roof coating
J31/335 Warm deck roof insulation
J41/10 Reinforced bitumen membrane warm deck roof covering
J42/10 Warm deck roof covering
K10/125 Metal stud partition system
K10/155 Wall lining system (metal studs)
K10/220 Proprietary suspended ceiling system
K10/30 Metal stud
K10/50 Suspended ceiling system on metal framing
K11/115 Battened plywood floating floor
K11/125 Battened particleboard floating floor
K11/135 Battened oriented strand board floating floor
K11/145 Battened cement-bonded particleboard floating floor
K11/20 Battened particleboard floating floor
K11/215 Plywood floating floor
K11/225 Particleboard floating floor
K11/235 Oriented strand board floating floor
K11/245 Cement bonded particleboard floating floor
K11/25 Particleboard floating floor
K11/55 Rigid board insulation fixed as roof sarking
K11/795 Wall lining on metal framing
K21/120 Battened wood flooring
K21/130 Battened wood floating floor
K21/140 Battened wood laminate flooring
M10/290 Floating construction
M10/40 Floating construction
M13/260 Floating construction
M13/40 Floating construction
P10/140 Insulation fitted between rafters
P10/15 Insulation fitted between rafters
P10/170 Insulation to loft access hatches
P10/190 Insulation fitted between studs
P10/20 Insulation to loft access hatches
P10/40 Insulation fitted betweenor to the face ofstuds
To BS EN 13165.
Declaration of Performance (DoP): CE Marked to BS EN 13165 - Certificate Number 18.DOPTB4000-01.
Third party product certification
BRE Green Guide rating of A, Certificate number ENP413; BBA approved 16/5352 and 17/5405; ISO 9001; ISO 14001.
Euroclass E Reaction to Fire classification, according to BS EN 13501-1.
Thermal conductivity (maximum)
Celotex TB4000 has a declared thermal conductivity of 0.022 W/m.K, according to BS EN 13165 for factory made rigid polyurethane foam (PU) products.
Face size (length x width)
2400 x 1200 mm.
Consult manufacturer for details.
Compressive strength at 10% deformation
Consult manufacturer for details.
Thermal resistance (R-value)
Compliance with Building Regulations Part H
Helps to meet the requirements of UK thermal building regulations.
Thermal conductivity of PIR products does not change over time.
Information regarding storage, installation and handling of Celotex products, or health and safety information, can be found on the manufacturer's website.