Ballytherm Insulation is a foil-faced Polyisocyanurate (PIR) insulation board. The PIR board is formed by a continuous foaming process, which gives the board its tight cell structure and bonds the facing to the foam. After foaming the boards are cut to size and left to cure.


Ballytherm Insulation boards are produced in sizes 2400mm by 1200mm and in thicknesses from 20mm up to 150mm thick. Board thicknesses from above 150mm to 200mm are available on request.

All Ballytherm boards are butt edged or tongued and grooved.


Ballytherm insulation boards have a yellow foam core with laminated foil facings printed with the company logo.


Ballytherm is a strong, rigid board suitable for self-supporting applications in floors, walls and roofs.

It can withstand the loadings in groundbearing floors.


Ballytherm Insulation is produced with a zero ozone depletion blowing agent.

The Insulation boards’ low thermal conductivity mean less material is required to achieve a given thermal resistance than for most other insulants. Ballytherm Insulation has a GWP (Global Warming Potential) of <5. Ballytherm Insulations Products are CFC/HCFC Free and have zero ozone depletion potential.

During its service life the insulation will save many times more energy than is taken to manufacture it.


Ballytherm Insulation remains stable at temperatures up to 400°C; at higher temperatures a protective char forms on the surface, slowing the spread of flame. Ballytherm insulation may be used safely behind non-flammable materials such as plasterboard; it has achieved a Class 1 surface spread of flame rating when tested to BS 476-7:1997.


The PIR core of Ballytherm Insulation boards has a low moisture absorption capacity, making Ballytherm Insulation suitable for use in damp environments.

The foil laminate facing gives the boards a high vapour resistance.


Ballytherm Insulation does not rot and does not contribute to the growth of mould, nor does it support insects or other pests.


The PIR core of Ballytherm Insulation boards has an extremely low thermal conductivity, making the required thickness of insulation less than for most other insulants. The foil laminate facings of Ballytherm boards can also contribute to improved thermal performance: the low emissivity surface of the reflective foil can cut radiation heat transfer across an adjoining air space.


When Ballytherm Insulation is installed in accordance with manufacturer’s guidance and industry codes of practice it has a service life comparable to that of the rest of the building.


For more information about Ballytherm insulation and its properties, contact us at + 353 (0)49 95 27000, email us at or use our contact form.