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Polyurethane (PUR) and Polyisocyanurate (PIR) insulation products, when used in a partial fill masonry cavity wall construction, offer one of the thinnest solutions available as a result of its superior thermal performance. Just 30 mm is able to achieve a U-value of 0.35 W/m2.K (Dependent on construction).

Man-made-mineral-fibre (MMMF) is susceptible to water penetration; this can have a severe affect on its thermal performance. PUR/PIR insulation products are resistant, as a result of their closed cell structure, to moisture penetration. Consequently the thermal performance of PUR/PIR insulation products should remain at its designed level for the lifetime of the building.

Air movement over un-faced MMMF within a cavity wall can lead to a significant amount of heat loss. PUR/PIR insulation products are unaffected by air movement.

Benefits of PUR/PIR insulation products for cavity walls (partial fill)

• Provides the best thermal performance;
• Does not settle and leave part of the cavity un-insulated;
• Constant thermal performance for lifetime of the building;
• Eliminates the risk of water penetration;
• Are resistant to moisture ingress;
• Are non-fibrous and do not emit harmful emissions;
• Does not support the growth of fungi.

For further information please contact:

Ecotherm
Kingspan Insulation Limited
Quinntherm