12mm RCM Y-wall Calcium Silicate Sheathing Board (2400x1200mm)
Product Code:
2.88 m²
Estimated Delivery:
3 - 7 working days
Please get in touch for a more accurate lead time.
£83.90 inc. VAT 83.90
£69.92 ex. VAT
£29.13 per m² (inc. VAT)

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, 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 in ceilings offering a non-combustible classification.

Key points :

- 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

Specification :

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


- 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


- 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

Datasheets & Documents.
If you require a Safety datasheet (SDS) for this product please get in touch.
If you require a BBA Certificate for this product please get in touch.