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Description

Flexible cement/ calcium building board, for applications that require a slightly lighter board with improved fire properties. Product offers very similar properties to cement particle board, however due to the calcium additives it offers a greater fire resistance. Fully tested to achieve a one hour through wall solution with external sheathing board properties.

As a sheathing board, it can be used behind rain screen cladding, insulated facades and cedar cladding (in this application, the use of a water resistant/ breathable membrane such as Tyvek, on to the face of the board, is recommended in line with good building practises for external cladding). CE marked and conforms to BS EN 12467.

Key applications:

  • Sheathing board on metal and timber frame.
  • OEM Application where improved strengths and density are required.
  • Fire rated flooring and roofing.
  • Fire rated walling.

Features:

  • A non-combustible classification A1.
  • Excellent water resistance properties.
  • Flexible and strong.
  • RCM's lightest sheathing board with improved workability.
  • Excellent water resistance properties.
  • One hour load bearing fire protection.
  • High impact strength.

General information
Size

1200 x 1200 mm

1200 x 2400 mm

Finish

Front face: smooth, Back face: textured

Color

Yellow and grey

Features

Highly resistant to fungus and terminate attack

Material

Mixture of cement, lime, calcium silicate and other additives

Uniclass 2015 Fibre-reinforced cement boards (Pr_25_71_52_25)
Specification data
Product Reference

Y–Wall

Size

1200 x 1200 mm

1200 x 2400 mm

Thickness

6 mm

24 dB sound insulation.

9 mm

29 dB sound insulation.

12 mm

31 dB sound insulation.

Accessories

None

RCM Foil Tape

Waterproofing seal.

RCM Intusil

Neutral cure sealant for use in gaps and joints.

RCM Joint Seal

Air tightness seal.

Standard product features

Colour:

Yellow.

General:

  • Nominal density: 1200 kg/m³.
  • Bending strength (Modulus of Rupture): 9.8 Mpa.
  • Modulus of Elasticity (MoE): 4.0 Mpa.
  • Thermal conductivity: 0.12 W/mk.
  • Fire rating: BS 476-4 non-combustible; 1 and 2 Hour through wall fire protection tested to BS 476-22.
  • Fungus and termite attack: Highly resistant.
  • Frost resistance: Four star.
  • Front face smooth, back face textured.
  • Durability (minimum): 30 years.

Product Options

Size:

Two standard sizes available, other sizes available upon request.

Recommended fixings:

4.8 x 38 mm wing tip self-drilling fixing.

Digital objects
PlatformCompatibleVersionCertified to
Vectorworks
- 1.0
AECOsim
- 1.0
ARCHICAD
- 1.0
Revit
Revit 2017 5 2.0
IFC
- 5 2.0
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