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Application

Timber joist ceiling.

Description

Timber joist ceiling based on fermacell® Gypsum-Fibreboard linings. Homogeneous dry lining board made from recycled gypsum, recycled cellulose fibres from post consumer waste paper and recycled water. 


Features and benefits:

  • The board is light grey in colour.
  • Available as square edged .
  • Marked on the rear face with the product name and identification.
  • fermacell® fibre gypsum boards offer a wealth of advantages compared to conventional interior dry lining such as plasterboard.
  • High performance building board that when installed offers the speed of dry-wall with the robustness of blockwork saving in space, time and money.

General information

Color

Grey

Manufacturer guidance

fermacell® Gypsum-Fibreboard.

Finish

Guidance for specification option:

As required.

Manufacturer guidance

Painted, as required.

Material

Gypsum

Guidance for specification option:

fermacell® Gypsum-Fibreboard consists of a homogeneous mixture of water, gypsum and cellulose fibre compressed at high pressure.

Shape

Rectangle

Length

2400 mm

2700 mm

3000 mm

Width

1200 mm

Uniclass

Ss_30_25_10_10 Board suspended ceiling systemsPrimary

CAWS

K40/20 Board-suspended ceiling systems

K40/10 Unit/ modular suspended ceilings

K40/115 Unit/ modular suspended ceiling system

K40/265 Infill units

K40/135 Board-suspended ceiling system

Specification data - Board suspended ceiling systems

System performance

To BS 476-22, 60 minutes.

Insulation

Mineal wool, 100 mm x 33 kg/m³.

Barriers in ceiling void

-

Fire barriers

From below.

Linings

-

Inner layers

10 mm fermacell®.

Face layer

10 mm fermacell®.

Fasteners

-

Manufacturer guidance

Refer to manufacturers guidelines.

Joint treatment

fermacell® Jointstik 1 mm glued joint.

fermacell® Jointfiller 5–7 mm filled joint.

System accessories

-

Manufacturer guidance

Use correct accessories as per manufacturers guidelines.

Execution

-

Manufacturer guidance

Installing boarded ceilings.

System completion

Verification of performance.

Joists

225 x 50 mm.

Guidance for specification option:

@ max. 600 mm centres.

With 20 mm T&G chipboard structural floor deck.

Manufacturer guidance

Timber joists.

Substructure

MF ceiling structure.

Guidance for specification option:

At maximum 600 mm centres.

Height

345 mm.

Manufacturer guidance

System height.

Board size

2400 x 1200 mm.

2700 x 1200 mm.

3000 x 1200 mm.

Manufacturer guidance

fermacell® fibre gypsum board.

Density

1150+50 kg/m³.

Manufacturer guidance

fermacell® fibre gypsum board.

Water vapour diffusion resistance

13 μ.

Manufacturer guidance

fermacell® fibre gypsum board.

SpecificHeatCapacity

1.1 kJ/kgK.

Manufacturer guidance

fermacell® fibre gypsum board.

Hardness

30 N/mm².

Manufacturer guidance

fermacell® fibre gypsum board.

ThicknessSwelling

<2%.

Manufacturer guidance

fermacell® fibre gypsum board.

Shrinkage

0.25 mm/m.

Guidance for specification option:

At 30% change in relative humidity (20°C).

Manufacturer guidance

fermacell® fibre gypsum board.

Extension/ shrinkage.

MoistureContent

1.3%.

Guidance for specification option:

At 65% relative humidity at 20 °C air temperature.

Manufacturer guidance

fermacell® fibre gypsum board.

pH value

7–8.

Manufacturer guidance

fermacell® fibre gypsum board.

Usage

Type 1 and 2.

Guidance for specification option:

Usage classification to EN 1995-1.

Manufacturer guidance

fermacell® fibre gypsum board.

ThermalExpansionCoefficient

0.0001 %/K.

Manufacturer guidance

fermacell® fibre gypsum board.

ThermalConductivity

0.32 λ.

Manufacturer guidance

fermacell® fibre gypsum board.

Literature

fermacell®  Specification Guide

fermacell® Specification Guide