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How to Install an MF Plasterboard Ceiling

How to Install an MF Plasterboard Ceiling

An MF ceiling system is suitable for most internal dry lining applications. Using
this system, the fully concealed grid and ceiling lining combine with plasterboard
to create a seamless appearance.

The following steps will show you how to install this type of ceiling and achieve
a smooth, high quality finish.

If you have any queries about this or any other project, call our friendly team on
01628 936 706 or contact us here.

Setting the Ceiling Level

As with all projects, getting the foundation
right is important. With this in mind,
ensuring the ceiling is level and at the
required height is the first task.

Use a laser, spirit or water level to mark the
required height on your wall, and replicate
this on all remaining walls.

Installing the MF6A Trim

The purpose of the MF6A trim is to hold the
MF5 in position. It provides a finish to the wall
for the plasterboard.

The MF6A should be attached to each wall at
the required level using an appropriate fixing
such as a drywall screw, plastic hammer fix
or metal nail-in. The fixings should be centred
at no more than 600mm centres.

Creating the Hangars

Cut the MF17 suspension angle to fit the
top of the MF6A. For example, if the MF6A
is 450mm from the void, then make the
angles 450mm long.

Drill a hold in one end and attach the MF16
angle bracket using the MF15 nut and bolt.


The suspension hangars take all the weight of
the ceiling and the layout of the hangars need
to be planned in advance. The first fixing point
needs to be a maximum of 450mm from the
wall - this will be your starting point.
Once marked, take an appropriate fixing and
attach your hangar to the void. The additional
fixing points are then placed at a maximum of
1200mm centres in each direction.
All fixing points adjacent to walls must not be
any more than 450mm on all walls. As a final
check, ensure each fixing is tightened and pull it
to ensure it is fixed correctly.

Installing the MF7

Offer the MF7 up to the hangar, with one
edge resting on the MF6A. Attach the MF7 to
the hanger, and clamp to hold position. When
you're happy it is level and in position, fix
using an MF20 Wafer Tek screw. Continue
this installation until you have rows of
channels all fixed into position.

Installing the MF5

Clip one end of the MF5 into the MF6 at a right
angle and attach the MF7 channel already
installed, and offer up to the underside of the MF7.
Place an MF9 clip over the back of the MF7 and
clip it onto the MF5. To make this task easier,
squeeze together gently the MF5 and use a
second MF9 clip to drag it round and into place.
Make sure you hear it snap into place and that the
leg of the clip is tightly located. Continue this
process by placing additional MF5 sections
parallel to the others.
The first MF5 should be placed a maximum of
150mm from the parallel wall and 450mm from
the next MF5 if using 1800 x
900mm plasterboard.

Extending the MF5 to a Wall

It's likely that the MF5 will not stretch to the
exact width of the wall and you will have to
join two pieces together.

Take a measure from the wall and add an
additional 250mm. Cut the MF5 using a
suitable tool, place in position and fix using
an MF20 Wafer Tek screw.

Extending the MF7

It's also likely that the MF7 will not stretch
to the exact width of the wall, meaning you
will need to join two pieces together.
Take a measure of the length required and add
an additional 250mm. Clamp this into position
and fix using the MF20 Wafer Tek screws.

Fixing the MF5 to the MF6A

You should now have a metal framework in
place. Double check each MF9 clip is
tightly secured and that each MF5 is
parallel with the next at 450mm centres.

You can then secure the MF5 into the
MF6A with an MF20 Wafer Tek screw. This
should be done on every fixing point.

Fixing the Boards

Take a measure from the edge of the wall
to the centre of the MF5 and cut the board
to the correct size. Using a helper, offer the
board up to the metal framework and begin
installing the MF14 25mm drywall screws
through the plasterboard and into the MF5.
Continue down the length of the board at a
maximum of 300mm centres.

Continue fitting all the boards until the
framework is completely covered.


Insulation can be easily fitted within the
framework of the ceiling to provide additional
thermal, acoustic and fire performance, prior
to the boards being installed.

Additional Plasterboard Layer

An additional layer of plasterboard can be
fitted to further increase the performance of
the ceiling, simply by following the rules for
a single board; staggering the boards so
the joints overlap.

Installing an Access Panel

After skimming the ceiling you may require
access to services behind it. If so, fitting a plastic
access panel is a cheap and easy method.

Mark on the plasterboard where you want the
panel to be and cut a hole slightly bigger than
the frame of the panel, being careful not to
damage any of the steel framework behind.

Apply a bead of adhesive around the edge of the
frame and fix into place. The door can be opened
to provide full access to the services behind.

Paint & Finish

Once the ceiling has been skimmed and
necessary access put in place, both the
ceiling and any access panels can be
painted as required. You should now have
a smooth, high performance ceiling and
can stand back and admire the job.

To see this project being completed in more detail, watch the video below.
Keep watching until the end for details of how to receive your special
video discount voucher.

by Phillip Lidgerton

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