What is R-value?
R-value measures how well a material resists the transfer of heat. The higher the R-value, the better the material performs as an insulator.
Should the joints between boards be sealed?
Yes, sealing board joints is recommended. Using Eurothane Tape helps regulate the movement of water vapour and enhances the airtightness of the building envelope. Where boards meet other building elements, a low-modulus silicone sealant should be used to ensure a proper seal.
How do Eurothane GP PIR boards perform in wet or flood conditions?
Eurothane GP boards have very low water absorption due to their closed-cell structure. After 24 hours of full immersion, they typically absorb only around 2% moisture.
This structure allows the boards to retain their strength and form even when exposed to water. In contrast, other insulation types—such as mineral wool batts or blown insulation—can sag when wet and hold moisture for longer periods, which may delay the drying of the surrounding structure.
Do electrical cables need to be wrapped?
No, electrical cables can pass through the insulation without affecting the integrity of their protective sheathing.
How is Eurothane GP insulation manufactured?
Eurothane GP insulation is produced through a chemical reaction between polyol and isocyanate. When combined with a blowing agent, this reaction creates polyisocyanurate (PIR) foam.
The process generates heat (an exothermic reaction), causing the foam to expand and bond to foil facings. Once cooled, the material becomes rigid and is then cut to the required size.
The process generates heat (an exothermic reaction), causing the foam to expand and bond to foil facings. Once cooled, the material becomes rigid and is then cut to the required size.
Are Eurothane GP boards environmentally friendly?
Eurothane GP boards are highly energy efficient. Over the lifespan of a building, they typically save significantly more energy than is used during their manufacture, helping to reduce both energy costs and carbon emissions.
They are manufactured without CFCs or HCFCs, resulting in a Global Warming Potential (GWP) of less than 5 and zero Ozone Depletion Potential (ODP).
Recticel Insulation (Stoke-on-Trent, UK) is certified to the ISO 14001 Environmental Management System standard by Lloyd’s Register Quality Assurance.
They are manufactured without CFCs or HCFCs, resulting in a Global Warming Potential (GWP) of less than 5 and zero Ozone Depletion Potential (ODP).
Recticel Insulation (Stoke-on-Trent, UK) is certified to the ISO 14001 Environmental Management System standard by Lloyd’s Register Quality Assurance.
What environmental standards do Eurothane GP boards meet?
AS 2122.1-1993 – Determination of flame propagation
UK A+ rating (2008 BRE Green Guide)
UK A+ rating (2008 BRE Green Guide)
Can Eurothane GP be installed in contact with the ground? Is a vapour control layer required in floors?
When installing in floors, a damp-proof membrane (DPM), typically a 1200-gauge polythene sheet, should be used. In addition, a 500-gauge polythene vapour control layer (VCL) should be placed above the insulation if a concrete slab or screed is to be applied.
This layer protects the foil facing from the alkaline content of concrete and prevents moisture within the slab from entering the board joints. It also helps maintain joint integrity during pouring, avoiding thermal bridging.
For floating timber floors, the VCL should be positioned directly beneath the finished floor.
This layer protects the foil facing from the alkaline content of concrete and prevents moisture within the slab from entering the board joints. It also helps maintain joint integrity during pouring, avoiding thermal bridging.
For floating timber floors, the VCL should be positioned directly beneath the finished floor.
What quality standards do Eurothane GP products meet?
Recticel Insulation places strong emphasis on product quality, particularly in terms of dimensional stability and flatness.
The company operates a Quality Management System certified to BS EN ISO 9001 and provides CE marking in accordance with EN 13165 for thermal insulation products used in buildings.
The company operates a Quality Management System certified to BS EN ISO 9001 and provides CE marking in accordance with EN 13165 for thermal insulation products used in buildings.
Can Eurothane GP be used with underfloor heating?
Yes, Eurothane GP boards are suitable for use with both hydronic (wet) and electric underfloor heating systems. Fixing a wet system through the VCL, as described above, will not compromise the performance of either the insulation or the vapour control layer.
Do Eurothane GP boards release harmful substances when heated?
No, the boards do not emit harmful gases or toxins when exposed to heat in normal applications (such as use in a sauna). When installed correctly, they will provide consistent, long-term performance.
Can Eurothane GP be used for roof insulation?
Yes, the rigid nature of PIR boards allows them to be installed between rafters or fixed beneath them, making them suitable for a variety of roof insulation applications.
Can electrical cables be recessed into Eurothane GP boards?
Yes, cables can be channelled into the boards; however, doing so may slightly reduce the overall thermal performance.
What adhesive should be used to fix Eurothane GP boards to plasterboard or metal?
Suitable adhesives include products such as Selleys Liquid Nails or PVA. The boards should be temporarily supported or fixed in place until the adhesive has fully cured.