Part of the ROCKWOOL Group

AM24-edge

EM24-edge

Visible and semi-concealed grid ceiling systemAesthetical

- Versatile ceiling system with a high performance stone wool core and an attractive metal surface - Provides the highest Class A sound absorption - Every single tile is demountable for quick and easy access to services - Visible and semi-concealed grid ceiling system

System Description

Rockfon® System Metal T24 AM, EM™

Rockfon® System Metal T24 AM, EM

™

2

AM24

8

EM24

74

5

6

3

12

Visible grid and semi-concealed grid ceiling system with AM24 and EM24 edge tiles.

A unique retaining tab ensuring stone wool core and metal tile stays together.

Description

Rockfon® System Metal T24 AM, EM is a metal ceiling system suitable

for a range of commercial applications and is particularly suited for

use in offices, retail, etc.

The system can be used to create semi-concealed and visible grid

ceiling solutions by combining Chicago Metallic T24 Click 2890 grid

with Rockfon Metal AM24 and EM24 edge tiles.

Rockfon Metal ceiling tiles are a combination of a proven, high

performance stone wool core and an attractive metal surface.

They are supplied in perforated and non-perforated formats

and manufactured from pre-painted, 0.5mm thick galvanised

steel. Supplied in white RAL 9003, the metal ceiling tiles are

dimensionally stable.

The Chicago Metallic T24 Click 2890 grid components are also made

of galvanised steel with a smooth white, visible surface. The grid

comprises click, joggled connections between the main runner and

cross tees which provide easy and quick installation together with

demountability and stability. The main runners and cross tees are

24mm wide with a uniform depth of 38mm ensuring good strength

and easy service integration.

The system provides full demountability of the installed tiles.

1200 mm

Max. 450 mm

Max. 1200 mm

1200 mm

600 mm

600 mm

Rockfon® System Metal T24 AM, EM

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3. Cross tee T24 Click 1200

System components and consumption guide

1. Main runner T24 Click/Hook 3600

5. Suspension hanger 6. Perimeter hold down clip

HDCW2

2. Cross tee T24 Click 600

7. Non perforated tiles

Available in AM24 and EM24 edges, 600 x 600

and 1200 x 300 sizes for borders, perimeter

edge detailing and integration of services.

Chicago Metallic T24 Click 2890

4. C wall angle trim

Wall angles

Accessories

Tile - AM24 and EM24 edge

Tile Chicago Metallic T24 Click 2890 Wall angles Accessories

1 2 3 4 5 6

- Main runner T24 Click 3600

Cross tee T24 Click 600

Cross tee T24 Click 1200

C wall angle(L: 3050mm)

Suspension hanger Perimeter hold down clip

Dimension (mm) Consumption/m²

600 x 600 2.78 pcs/m² 0.83 lm/m² 0.83 lm/m² 1.67 lm/m² 1) 0.70 pcs/m² 2)

1) Consumption depends on room size.2) Installed at 300mm centres.

AM24 edge EM24 edge

Rockfon® System Metal T24 AM, EM

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Compatible Tiles Overview

- Dimensions (mm)

Tiles Thickness (mm) 600 x 600

Rockfon® Metal 20 •

Other dimensions can be installed in Rockfon System Metal T24 AM, EM. Please contact Rockfon.

- Max. Load (kg/m²)

Hanger distance (mm) Dimensions (mm) Max. 2.5 mm deflection Max. 4.0 mm deflection

1200 600 x 600 9.9 16.5

The system´s load capacity is determined from a max. deflection of the individual components corresponding to 1/500 of the span or the cumulative deflection of all structural components which does not exceed 2.5 or 4.0mm. The loading capacity is given as regularly distributed load in kg/m2, the weight of the tile is not included.

Rockfon® System Metal T24 AM, EM are available with the following Rockfon tiles:

System load bearing capacity

Corrosion resistanceClass B (EN13964)

DemountabilityTiles installed in Rockfon System Metal T24 AM, EM are fully demountable.

Performance

Rockfon® System Metal T24 AM, EM

™

5

A mm

C mmB mm

1

600600

1200 mm

1200 mm

1

3

Grid layout and hanger locationRockfon Metal AM and EM edge tiles can be installed in Rockfon System Metal T24 AM, EM.

Some layout options are shown below depending on the size of the tile.

Grid Installation

Main runner

Cross tee

Hanger

Installation requirementsDuring and after grid installation, it is important to check that T profiles are perfectly aligned

horizontally. A maximum level difference of +/- 1 mm is recommended between profiles and

should not be accumulated. This tolerance is valid for all directions.

It is also important to check the

squareness of the angles between

the main runners and cross tees. This

can be easily done by comparing the

measurements of the two diagonals.

See recommended tolerances on the

drawings below.

Dimensions (A x B) Diagonal (C) Tolerance

mm

600 x 600 814.6 +/- 1.00

Rockfon® System Metal T24 AM, EM

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D

Perimeter Finish Options

Below are examples of perimeter finishing. Further details can be found on www.rockfon.co.uk

E-edge - Perimeter finish with C wall angle trim.

A-edge - Perimeter finish with C wall angle trim.

Tiles installed in Rockfon System Metal Metal T24 AM, EM are fully

demountable. The installation depth is defined as the distance from

the underside of the tile to the underside of the substrate, where the

hangers are fixed. D is the minimum installation depth for easy tile

installation and demountability.

Minimum installation depth (mm)

Tile thickness Dimensions D

mm

20 600 x 600 100

Rockfon® System Metal T24 AM, EM

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Preparing for service integrationUse appropriate tools for creating size and shape of aperture

required in the tile and infill.

When the ceiling system is load bearing, Rockfon recommends

using support arms or a yoke that transfers the weight of the service

to the grid. The size of the yoke should not be bigger than module

600 x 600 mm and the use of additional hangers to overcome

deflection in the ceiling system is strongly recommended. When

using support arms to spread the weight of the installation, Rockfon

recommends spanning a maximum of 600 mm. For more information

on the load bearing capacities of this Rockfon System Metal T24 AM,

EM, please refer to the table below.

Service integration

PlanningA thorough project plan will result in less re-work and less ceiling tile

damage. Rockfon recommends discussing the installation thoroughly

and well in advance with other installers that have to work in or near

the suspended ceiling. By doing so damaged ceiling tiles and dirty

spots on the finished ceiling surface can be reduced, which reduces

costs on site.

When installing services in Rockfon System Metal T24 AM, EM you

should always follow local building regulations if more strict than the

load bearing capacity guidelines Rockfon recommends in the above

table.

Contact your local Rockfon technical service for more information

on suitable lighting fixtures, accessories and the availability of CAD

drawings of the different services integrated in Rockfon System Metal

T24 AM, EM. Special solutions with integrated services are, if available,

shown on page 9 of this document in the Tools section.

- Weight of installations

- < 0.25kg/pcs 0.25 ≥ 3.0kg/pcs > 3.0kg/pcs

Small service integration; Spot- or downlight, speaker, ventilation etc. Drawing A Drawing B Independently suspend

Large service integration; Downlight, speaker, ventilation, etc. Drawing A Drawing B Independently suspend

Modular lighting- or ventilation fixture Drawing C; System load bearing capacity (if evenly distributed over grid in kg/m2)

Overview load bearing capacity

Rockfon® System Metal T24 AM, EM

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Drawing AThe integration of a spotlight, smoke detector, speaker, etc. (weighing < 0.25kg/pcs).

Rockfon recommends installing spotlights and downlights centralised in the tile.

Drawing BThe integration of a downlight, spotlight, smoke detector, loud speaker, etc. (weighing 0.25 ≥ 3.0kg/pcs).

Use of an appropriate yoke to spread the load to the grid (as shown in the detail) or use of support arms to spread

the load to the grid system is strongly recommended. The use of additional hangers to avoid excess deflection

and a centralised installation of the lighting in the tile is strongly recommended.

* The thickness of the plywood or metal yoke needs to be adapted in function of the weight, size and position of your service integration (e.g. downlight or speaker). The Plywood or metal yoke itself may not deflect after installing your service integration.

Drawing CThe integration of a modular luminaire or air vent (evenly distributed over grid), weighing max. the system loading

capacity. If the load capacity of the system is likely to be exceeded it is strongly recommended to suspend the

service independently. Alternatively use services equipped with supporting arms on minimum two opposite sides

to transfer the weight of the service to the top of the bulb of the grid. This is safer and reduces the likelihood of

cross tee rotation.

Metal yoke

Metal yoke

Rockfon® System Metal T24 AM, EM

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Junction between ceiling and wall or other vertical surface The perimeter trim should be fastened to vertical surfaces at the

required level using appropriate fixings at every 300-450 mm

centres. Ensure that butt joints between adjoining lengths of trim are

neat and that the trim is free from kinks and remains true and level.

For the best aesthetics, use as long a length of trim as possible. The

minimum recommended cut length is 300 mm.

Perimeter trimsTimber trims, timber shadow battens and metal shadow mouldings

should not be used with fire resisting/protecting ceilings.

Junction between ceiling and curved vertical surfaceThe use of a preformed curved perimeter trim is the most

appropriate method. Rockfon can provide details of curved

perimeter trims on request.

CornersPerimeter trims should be neatly mitred at all corner joints. Overlap

mitres are acceptable on metal trims on internal corner joints unless

specified otherwise.

Suspension gridUnless specified otherwise, the ceiling should be set out

symmetrically and where possible, perimeter tiles should be

greater than 200 mm in width. The hangers should be fastened with

appropriate top fixings and to the main runners at 1200 mm centres

(or less with greater load). Main runners should be positioned at

1200 mm centres for 600 x 600 mm.

For proper grid installation, ensure the T profiles are perfectly

aligned horizontally and diagonals of modules are equal (see

requirements and tolerances on page 5). Main runner joints should

be staggered and there should be a hanger positioned within

150 mm of the fire expansion element/cut-out and within 450 mm of

the end of the main runner where it terminates at a perimeter.

Additional hangers may be necessary to support the weight of

ceiling services.

TilesWe recommend the use of clean nitrile or PU coated gloves when

installing Rockfon tiles in order to avoid fingerprint marking on the

surface.

For an optimum work environment, we recommend installers always

observe common work practices and follow the installation advice as

shown on our packaging.

All offcuts and holes must be treated according to local Building

Regulations.

Straight cutting of perimetersEase back retaining tabs on both sides of the metal tile and remove

stone wool infill. Measure appropriate distance and use a sharp craft

knife to cut the infill. Use aviation snips to cut the tile accordingly.

Replace the infill into the tile and install in the grid.

Non perforated tiles can be used at room perimeters if required.

NB! Remove protective film from surface of the tile prior to installing

in the grid.

General installation recommendations

Rockfon has developed specific tools that are available on www.rockfon.co.uk

Tools

Visit our online CAD Library or BIM portal to assist you in your project design.

Explore our vast library of reference projectsGenerate specification texts for our products

Rockfon® is a registered trademark of the ROCKWOOL Group.

RockfonROCKWOOL Limited T/A Rockfon

14th Floor, Chiswick Tower, 389 Chiswick High Road,London W4 4AL

Tel: +44 (0) 208 222 7457www.rockfon.co.uk

All colour codes m

entioned are based on the NC

S - Natural C

olour System®

© property of and used on license from N

CS C

olour AB

, Stockholm 2012 or the RA

L colour standard. Subject to alterations in range and product technology w

ithout prior notice. Rockfon accepts no responsibility for printing errors.

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08.2018 |