MF Ceiling System

Ideal for commercial and domestic applications and compatible for use with dry lining partitioning systems, voestalpine Metsec’s MF Ceiling System creates a seamless surface suitable to receive most decorative finishes. Mineral wool insulation can be included in the cavity to further improve acoustic performance.

• Single and double plasterboard layer configurations
• MF Ceiling grid heights can be varied to accommodate services and ducting
• No restriction on depth of drop
• Always suspend heavy loads, air ducting, lighting units, etc. directly from structural soffit to avoid overloading.
• AMF12B pre-formed mf ceiling clips not be used in residential applications

MF Grid Framework Installation – Maximum load up to 30kg/m²

An MF Ceiling System is a metal frame grid designed to be suspended in a ceiling, and assembled with a range of potential finishes such as plasterboard. The MF ceiling system comprises of a number of components, detailed below.

To be read with reference to BS 8000:8 2023 and in conjunction with full Speedline / Tradeline project specific documentation which is created and available on request.

MF Perimeter Channel

Install Metsec Drylining SMF6A channel secured to perimeter of the room, in the centre of the profile at 600mm maximum centres with suitable fixings

MF Primary Channel

Install Metsec Drylining SMF7 spaced at 1200mm centres supported from the ceiling structure using rigid angle SLO6 at 1200mm centres with AMF12B soffit cleat attached. Secure using suitable fixings. 

MF Furring Section

Install Metsec Drylining SMF5 spaced at 400mm or 450mm centres (dependent on plasterboard length) and secured to the Primary Channels using two drywall pan head screws per connection or AMF9B preformed connecting clips*.

* AMF9B pre formed connecting clips must only be used in commercial applications. For all domestic situations drywall pan head screws must be used.

For information about our Sub-grid and Spring Tee systems, click on the links below.

MF System Plasterboard Installation

Single Layer

Plasterboard must be fixed at 230mm maximum centres within the body and 150mm around the perimeter of the board.

Position drywall screws not less than 10mm from the paper bound edge of the plasterboard and 13mm from any cut edge. Ensure a minimum of 10mm penetration into the WL507.

Recess heads of drywall screws below surface of plasterboard but do not break paper or gypsum core.

Double Layer

Inner layer of plasterboard must be fixed at 230mm maximum centres within the body and 150mm around the perimeter of the board. The outer layer must be fixed at 300mm maximum centres within the body and perimeter.

Plasterboard joints on the outer layer must be staggered compared to the inner layer.

Position drywall screws not less than 10mm from the bound edge of the board and 13mm from any cut edge. Ensure a minimum of 10mm penetration into the WL507.

Recess heads of screws below surface of plasterboard but do not break paper or gypsum core.

The above is issued as a guide – full system specific documentation (dependent on required performance) is available on request.

Last updated 20/07/23

For more information or for details of your nearest stockist please contact us on +44 (0) 121 601 6075 or Metsec.DryLining@voestalpine.com.