RCM Y-wall is a high-quality flexible calcium silicate cement-based building board, perfect for use as a fire-rated sheathing board. Offering excellent fire properties as well as high levels of dimensional stability, the Y-wall is an exceptional board for use in multiple applications.
Y-wall is used primarily as a fire-rated sheathing board or building board. Used extensively on both steel frame and timber frame structures, Y-wall is used behind all types of façade solutions, as well as in ceilings offering a non-combustible classification.

- Fire-rated to EN 13501-1 class A1
- BBA approved
- Flexible and strong
- Excellent water resistance
- Easy to use
- High levels of dimensional stability
- Integrates with other RCM products

Thickness: 12mm
Width: 2400mm
Length: 1200mm
Coverage: 2.88m²
Density: 1200 kgm3
Thermal Conductivity:  0.30 W/mK
Fire Rating: BS EN 13501-1 Class A1 Non-Combustible

Application:

- Fire-rated sheathing board
- Ceilings
- Partition Walling
- OEM applications for improved strength and density
- Recommended for buildings above 18m
- Ideal for Offsite Construction Regimes

Construction Types:

- Lightweight Steel Frames
- Timber Frame
- Modular / Offsite

Certification:

- BS EN 13501-1 Class A1
- BS EN ISO 1716:2010
- BS EN ISO 1182:2010
- BS 476 Part 4
- BS 476 part 21 and BS 476 part 22 fire-rated through wall solutions
- BS EN ISO 12467
- BS EN 594 Category 1
- BS EN ISO 1015-11
- BS EN ISO 1062-1