The 125mm Isover RD Party Wall Roll is a glass mineral wool product designed to reduce sound transmission across masonry cavity separating (party) walls and to minimize air movement within the cavity wall, enhancing thermal performance. When integrated into Robust Detail separating wall constructions E-WM-17, E-WM-20, and E-WM-24, it eliminates the need for expensive pre-completion sound testing and can exceed the acoustic insulation performance requirements outlined in Building Regulations Approved Document E (England & Wales) by +5dB. The 125mm Isover RD Party Roll insulation rolls are pre-cut into 2 x 455mm sections to fit standard wall tie spacing.
The 125mm isover party wall insulation reduces unwanted noise between attached properties when used as part of a Robust Detail construction.
Achieves a zero U-value for party walls, as defined in Building Regulations (Approved Document L1A, Table 3), when the cavity is fully filled and combined with mineral wool filled cavity barriers at the edges.
Serves as a proprietary component in three Robust Detail constructions (E-WM-17, E-WM-20, and E-WM-24), meeting the generic full-fill mineral wool specification.
Manufactured from up to 82% recycled glass on a plant powered by 100% renewable electricity. For more information, see the Environmental section below or visit insulation-uk.com/CSR.
Eliminates the need for costly pre-completion sound testing when used as part of a Robust Detail construction, making it a cost-effective solution.
#### Fire Classification Achieves a Euroclass A1 Reaction to Fire classification, according to EN 13501-











