USING KORE EPS AS AN ALTERNATIVE TO PIR

If you've been involved in the construction of insulation industry, you probably already know there is a shortage of PIR affecting the global insulation market. A key raw material, known as MDI, used in the manufacturing of PIR has been in short supply for a number of months. This has lead to production delays, quotas on the amount of PIR insulation that can be purchased and unfulfilled orders. 

KORE Expanded Polystyrene is a viable alternative to PIR that can be used as a whole-home insulation solution. With no shortages affecting the EPS industry, our lead times are just a few days, with more than enough material to supply the insulation industry in Ireland and the UK. EPS is a tried and tested product that has been used as insulation for decades, proving it's performance, reliability and durability. 

 

MAKING THE SWITCH TO EPS  

 

PIR Alternative Cost Comparison.png

EPS is a cost effective solution when compared to PIR insulation, with typical savings of up to 20 percent. With the short supply of PIR, consumers can expect PIR prices to continue to rise in the short and medium term.

PIR Alternative - EPS Sustainability

EPS is a sustainable material, lasting the lifetime of the building. At the end of the building's useful life, EPS can be recycled and manufactured into a wide variety of other products. In addition, there is a network of EPS recyclers throughout Ireland and the EU, meaning any leftover material can be recycled rather than ending up in a landfill. 

EPS is durable when compared to PIR insulation

EPS is an extremely durable material with a very high thermal performance that will not degrade over time. It is rot-proof, resistant to mould and will not absorb water or moisture.

There is no off-gassing with EPS unlike PIR insulation

Some insulating materials, such as PIR, may off-gas over time. This means the pentane gas used in PIR insulation is slowly replaced with air, resulting in diminished thermal performance. EPS does not off-gas, and is manufactured with 98% air in a closed-cell structure, meaning its thermal performance stays consistent over its full lifetime. 

EPS is water resistant and does not absorb water

Expanded Polystyrene is water and moisture resistant. When used as floor insulation, EPS can be installed in wet or damp conditions without any degradation of performance, perfect for Ireland's climate! When used as cavity wall insulation, EPS will not allow water to transfer across the cavity to the inner leaf.

EPS is a whole-home insulation solution for new builds and retrofit applications

EPS is a whole-home insulation solution. It can be used as floor insulation, cavity wall insulation, external wall insulation, roof and attic insulation and even as insulated foundation systems.

EPS is perfect for low energy homes including Passive Houses

EPS can be used towards achieving Passive House Certification and other low-energy building methods. You can learn more by viewing our latest case studies.

EPS is chemically inert and does not degrade over time

EPS is a chemically inert, non-toxic and an extremely stable material. The properties of EPS will not change over time, providing a consistent thermal performance year after year. 

 

 

      EPS VS. PIR FOR FLOOR INSULATION 

 

 

 

 

The short video below explains in further detail the benefits of using Expanded Polystyrene as an alternative to PIR for floor insulation applications.

 

 

 



ACHIEVING LOW U-VALUES WITH EPS  

 

Expanded Polystyrene easily meets and exceeds Part L of Ireland's Building Regulations when used in a variety of applications. The table below shows the thickness of both EPS and PIR required to achieve the most common U-values required of architects and contractors when insulating a new build home.

Floor Insulation Applications

 

Material Thermal Conductivity Thickness Required U-Value Achieved

PIR Insulation

0.022W/mK

100mm

0.17W/m2K

KORE Floor EPS70 Silver

0.031W/mK

140mm

0.17W/m2K

 

 
Material Thermal Conductivity Thickness Required U-Value Achieved

PIR Insulation

0.022W/mK

150mm

0.12W/m2K

KORE Floor EPS70 Silver

0.031W/mK

210mm

0.12W/m2K

 

Learn more about KORE Floor insulation.

Cavity Wall Insulation Applications

The following comparison shows a full fill PIR insulation board and KORE FIll Original Cavity Wall Insulation for a cavity width of 150mm. You can achieve lower U-values by widening the cavity.

 

Material Thermal Conductivity Thickness Required U-Value Achieved

PIR Insulation (Rigid Board)

0.021W/mK

100mm

0.21W/m2K

KORE Fill Original (Bonded Bead)

0.035W/mK

150mm

0.21W/m2K

 

Learn more about KORE Fill Original and KORE Fill Diamond cavity wall insulation.

 

  SAVE €€€ BY SWITCHING TO EPS 

 

 

 

 

When compared to PIR insulation, KORE EPS provides high thermal performance at a considerable cost savings. Are you in short supply of PIR insulation? Make the switch to EPS by speaking with our technical team and requesting a quotation today. With over 20 years of experience manufacturing Expanded Polystyrene, KORE can meet the needs of even the most demanding project and timelines. Our technical backup includes:

  • Consultation services
  • Thermal Modelling
  • Psi value calculations
  • U-value calculations & performance specifications
  • Condensation risk analysis
  • Compliance with DEEP software
  • Compliance with Building Regulations
  • Site visit inspections
  • On-demand technical documentation via the KORE Resource Centre

 

 

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