Product Overview
Isover RD Party Wall Insulation Roll measuring 100mm thick and covering 5.46m² per roll is a high-performance glass mineral wool designed for use in separating masonry party walls. The roll is resilient, strong, and pre-cut to 2 x 455mm widths to fit standard wall tie spacings with precision and minimal waste.
Engineered to exceed the acoustic performance standards set out in Building Regulations Approved Document E (England and Wales), Isover RD is a proprietary component of Robust Detail constructions E-WM-17, E-WM-20, and E-WM-24. The 100mm thickness provides a full-fill solution that enhances both sound insulation and thermal bypass performance.
Manufactured from up to 86% recycled glass, Isover RD Party Wall Roll combines outstanding sustainability credentials with consistent product quality. It contributes to zero U-value compliance in accordance with Approved Document L1A, Table 3, ensuring both acoustic and thermal efficiency in separating wall constructions.
Features & Benefits
- Excellent acoustic insulation: Reduces airborne sound transmission between adjoining properties when used as part of a Robust Detail wall system.
- Robust Detail compliant: Approved for use in E-WM-17, E-WM-20, and E-WM-24 party wall constructions, eliminating the need for pre-completion testing.
- Thermal bypass control: Contributes to achieving zero U-value performance in line with Approved Document L1A.
- Non-combustible: Euroclass A1 fire rating under BS EN 13501-1 for maximum safety.
- Sustainable composition: Manufactured from up to 86% recycled glass under ISO 14001 Environmental Management.
- Durable and stable: Retains thermal and acoustic properties throughout its service life; will not support mould, vermin, or bacteria.
- Precision-cut widths: 2 x 455mm strips fit standard wall tie spacing without additional trimming.
- Easy handling: Lightweight, flexible rolls are supplied palletised in weatherproof packaging for clean and efficient installation.
- Board thickness 100mm: Provides full-fill insulation for standard cavity party wall applications.
Applications
- Separating masonry party walls: Designed for use in E-WM-17, E-WM-20, and E-WM-24 Robust Detail constructions.
- Residential developments: Suitable for attached dwellings including semi-detached, terraced, and apartment buildings.
- Acoustic upgrades: Used to meet or exceed the sound insulation requirements of Approved Document E.
- Thermal compliance: Helps deliver zero U-value performance within party wall systems.
Installation Guidance
- Preparation: Ensure wall cavities are clean, dry, and free of mortar snots or debris before installation.
- Fitment: Unroll insulation and insert between wall ties, ensuring a snug, full-depth fit with no gaps.
- Joint alignment: Butt adjoining pieces tightly together to maintain continuous coverage.
- Support: Use stainless steel wall ties or proprietary retaining systems as per Robust Detail specification.
- Weather protection: Protect insulation during construction until the wall is fully sealed.
- Health & safety: Wear appropriate PPE during cutting or handling. Material Safety Data Sheet available from Isover.
Compliance & Performance
- Material specification: Glass mineral wool manufactured to BS EN 13162 and BS EN 13172.
- Thermal conductivity (λ): 0.036 W/m·K.
- Fire classification: Euroclass A1 to BS EN 13501-1 (non-combustible).
- Environmental certification: ISO 14001 and BES 6001 “Good” rating for responsible sourcing.
- BRE Green Guide rating: A+ generic rating (ref. 815320002).
- Quality assurance: Produced under ISO 9001 Quality Management System.
- Durability: Will not degrade, slump, or support vermin or biological growth.
- Important note: Must be installed in accordance with Robust Detail guidance to achieve stated acoustic and thermal performance levels.