
Y-wall
- Overview
- Technical Data
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FAQ's
- Downloads
- Case Studies
Overview
A1 non-combustible, BBA certified fibre cement building board
RCM Y-wall is a high-quality flexible calcium silicate based fibre cement 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 facade solutions, as well in ceilings offering a non-combustible classification.
Y-wall is ideal for modular construction methods.
Features
- 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
Standard board sizes
2400 x 1200mm (6mm, 9mm, 12mm and 15mm)
Other board sizes are available.
Samples
If you would like a sample please click on the ‘add sample to basket’ button at the bottom right of this page and select your samples. Once selected you can add other products also, but please make sure you click on the sample basket at the top of the website to complete your request.
Workability
RCM Y-wall can be cut, drilled and nailed using conventional hand tools; offering many of the properties of timber.
For cutting the product in any volume, we recommend the use of an RCM poly crystalline diamond Dart Blade to avoid excessive wear on other blades. Alternatively, RCM offer a complete fabrication service, please contact our technical department for details.
Key applications
- Fire rated sheathing board
- Ceilings
- Partition walling
- OEM applications for improved strength and density
- Recommended for buildings above 18m
Suitable for the following construction types
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Lightweight Steel Frame
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Timber Frame
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Modular / Offsite
Technical Data
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1200 kg/m3
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12 N/mm2
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4000 N/mm2
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≤0.30 W/mk
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≤9%
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BS EN 13501-1 Class A1 Non-Combustible
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Highly Resistant
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Front Face - Smooth
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Back Face - Textured
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30 years
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2400 x 1200mm
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6 9 12 15
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7.3 11.1 14.6 18.2
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Length±3mm
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Width±3mm
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Thickness±0.5mm
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Fire Reaction TestsBS EN 13501-1 Class A1
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BS EN ISO 1716:2010
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BS EN ISO 1182:2010
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BS 476 Part 4
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BS 476 part 21 and BS 476 part 22 fire rated through wall solutions
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Physical PropertiesBS EN ISO 12467
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BS EN 594 Category 1
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BS EN ISO 1015-11
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BS EN ISO 1062-1
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Steel Frame4.8mm x 38mm Wing tip self drilling fixing
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Timber Frame4.2mm x 42mm Climaseal self drilling fixing
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FAQ's
What applications can RCM Y-wall be used in?
- RCM Y-wall can be used as an external sheathing board on all structure where a fire rating is required including those greater than 18m in height, where a structure is over 18m in height RCM Y-wall should be used from ground level all the way up the structure.
What is the fire rating of RCM Ywall?
- RCM Y-wall is rated as A1 non-combustible.
Can RCM Y-wall be used as a permanently exposed external board?
- No, RCM Y-wall cannot be left permanently exposed.
Which way round should RCM Y-wall be fitted?
- RCM Y-wall has one smooth face and one textured face, the smooth face should be fixed outermost.
What should be used to tape the board to board joints?
- RCM Dafa tape should be applied to all board to board joints as soon as possible after fixing the boards, unless an airtight seal is required to the external face of the sheathing board, for an airtight seal then the RCM Joint Seal system should be used.
During the construction phase, how long can RCM Y-wall be left exposed?
- If the joints are taped using RCM Dafa tape as soon as the boards are fitted they can be left exposed during the construction phase for twelve months.
What are the fixing edge distance and maximum fixing centres for RCM Y-wall?
- RCM Y-wall edge distance is 15mm except at the board corners where fixings should be moved up or down to achieve 50mm. Fixings should be fixed using a maximum 600mm x 300mm grid pattern.
How many fixings are required for RCM Ywall?
- 27 No. fixings per 2400mm x 1200mm sheet when fixed in a vertical orientation.
- 25 No. fixings per 2400mm x 1200mm sheet when fixed in a horizontal orientation.
What type of fixings should be used?
- For fixing into SFS framing 4.8mm x 38mm self-drilling wingtip fixings suitably treated against corrosion should be used.
- For fixing into Timber framing 4.2mm x 42mm self-drilling fixings suitably treated against corrosion should be used.
Can RCM Y-wall be fixed to a radius?
- RCM Y-wall should not be fixed to a radius but should be cut into vertical strips and fixed to form the curve from a series of flat panels.
What blade is suitable for cutting RCM Y-wall?
- RCM can supply Poly Crystalline Diamond (PCD) blades suitable for cutting RCM Y-wall in a range of diameter and bore sizes, please contact RCM Technical department for further information.
Downloads
Case Studies
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University of Hertfordshire – College Lane Residences Project
The University of Hertfordshire is one of the region’s largest employers with over 2,700 staff and a turnover of more than £238 million. The community...
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Embassy Gardens – London
A regeneration development in Vauxhall by the Ballymore Group has seen the biggest transformation story London has ever seen. It has added an entirely...
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The International Quarter – London
High Rise Residential, Commercial
The International Quarter is a unique mixed-use scheme providing an inspiring new business environment, designed to create spirit, space, community and...
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NHS Langdon Hospital – Dawlish
In January 2008, the Devon Partnership NHS Foundation Trust approved plans for a major redevelopment of the Langdon Hospital site based in Dawlish. The...
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Premier Inn – Walsall Waterfront
In 2012 the town of Walsall underwent a major regeneration. The Waterfront North site was developed and was based on 2.2 acres of brownfield land, where...
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Riverlight – London
Residential, Hotel and Leisure, Commercial
Situated at a point where Nine Elms Lane moves away from the river and runs inland, the Riverlight development is a £200 million mixed-use scheme, designed...
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RATHBONE MARKET – CANNING TOWN
Part of the 680,000 sq ft Canning Town & Custom House regeneration area programme, Rathbone Market was designed by Project Orange and formed the third...
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CITY PARK WEST – CHELMSFORD, ESSEX
Located on the former Anglia Ruskin University site, in the heart of Chelmsford, City Park West is a newly created vibrant community. City Park West offers...
View Case Study
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