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FIREPLUG
UPGRADING
TIMBER
DOORS / PANELLING
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FIREPLUG UPGRADING
SYSTEM - FOR WOOD
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Fireplug FUS is
designed to upgrade, to fire door standard, new or existing timber
panelled doors. The system allows ornate and decorative doors
to keep their original character and appearance, and in most cases,
without taking them off their hinges. |
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FIREPLUG
FUS
Consists of Firefly
intumescent membrane paper (ref: Fireplug CFPM), intumescent coating
(ref: Fireplug ICT) and top sealer coat (ref: Fireplug TSC).
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Fireplug CFPM
is an intumescent membrane paper 0.5mm thick, supplied 550mm wide
to any length up to 100 metres long and is grey/black in colour. |
Fireplug ICT is
a water based acrylic intumescent coating available in both a clear
and coloured finish. |
Fireplug TSC is
a sealing coat to help against mechanical damage and the ingress
of moisture. Fireplug TSC can give a decorative finish and
is available in a full range of colours. |
Under the action
of heat the Fireplug ICT - CFPM expands to form an insulating layer
on the surface of the substrate. The insulating layer helps
to maintain the integrity of the substate for the required period. |
Fireplug FUS was
tested to British Standards BS476, part 22, test No. FRI687, in
April 1993 and BS476, part 20, on 14th May 1993, test No. IT360.
Full reports are available on request.
Six number 4mm thick pine panels achieved
FD20 status in test FRI687. The pine panel was part of a Victorian
panelled door with Fireplug FUS applied directly onto the existing
gloss paint, to the furnace side of the door. |
A 4mm thick plywood
panel achieved in excess of 30 minutes in test No. IT360, with Fireplug
FUS to both sides of the panel.
In each test the timber surround was
30mm thick softwood, and was treated with two brush coats of Fireplug
ICT coating, plus a coat of Fireplug TSC clear top coat.
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Before Fireplug
FUS can be applied a sound clean surface must be attained to allow
good adhesion of the Fireplug FUS system. Existing painted
or varnished finishes must be carefully prepared ensuring all dirt
and grease deposits are removed along with any loose flaking paint
or varnish. A thorough rub down with sandpaper and a wipe
over with white spirit, using a clean cloth, should leave a suitable
surface to work with. |
Cut to size Fireplug
CFPM paper to adhere onto the panels. A little time and care
is needed here as it is important to get the Fireplg CFPM to butt
against the edges of the framing styles on all sides. Once
satisfied, apply a brush coat of Fireplug ICT to the panel.
The Fireplug ICT has a thick consistency so do not overload the
brush, be prepared to spread the coating, stretching it evenly over
the panel. Offer the Fireplug CFPM to the panel and adjust
it to fit as required, there will be a certain amount of slip
with the Fireplug ICT but be careful not to tear the Fireplug CFPM.
If adjustment is required to position the Fireplug CFPM use the
flat of the palm over as much of the panel as possible and slide
the paper slowly. The second layer of Fireplug CFPM can then
be applied immediately. The final operation at this point
is to apply two coats of Fireplug ICT over the entire surface being
treated. This first coat can be carried our straight away
and then left to become tacky before applying the second brush coat
of Fireplug ICT. |
NB. Fireplug CFPM
intumescent membrane has a smoother side. If the panel is
to be painted after upgrading, then we recommend adhering the rough
side to the panel. Thus allowing a superior surface for decoration.
Alternatively if the door is to be varnished, therefore a wood grain
finish is required, either face of the Fireplug CFPM can be adhered
to the panel, as a wood veneer is applied directly onto the papered
panel prior to the last two coats of the Fireplug ICT. |
Fireplug TSC must
be applied onto a dry surface. Allow at least 24 hours at
normal room temperature for this. Ventilation is important
to reduce the humidity of the drying area and therefore the drying
time. Once dry a second coat of Fireplug TSC can be applied
if humidity levels up to 90% can be expected. Also two coats
of coloured Firelpug TSC may be needed if a higher gloss finish
is required or opacity is poor. Prior to each Fireplug TSC coat
being applied, a light rub down using a fine sand paper can enhance
the end result.
NB. We recommend using
a high quality fine, soft brush to apply Fireplug FUS. |
The painted door
application details laid out above, describe the actual procedures
carried out on the tested door. A door was chosen that had
soft wood panels only 4mm thick and framing only 30mm thick.
This gives a serious problem regarding maintaining integrity in
a fire, as there is very little substance to protect. It would
be fair to say that the thicker the panels and framing is then the
longer the door will last. Other factors detrimental to the
door's possible stability and integrity were that, as a Victorian
in age it had seen various coats of paint laid one on top of the
other. There was also various signs of wear and tear, corners
rounded and, in places joints had split. In all the door should
be a fair representation of a 'worst case' scenario.
The door edges
and head were protected by Fireplug
FPSM surface mounted intumescent strip. |
A further aspect
of the Fireplug FUS system is that it can be applied on site without
the doors being removed. This makes for the minimum of disruption
and lessens the chance of damaging what could be a valued piece
of history.
Click here to download a pdf of
this page. |
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To
ask questions or receive information about the Fireplug Upgrading
System for Wood, please use the form below. |
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Complete
Fire Protection Ltd. Unit 2, Ferry Steps Industrial Eastate, Albert
Road
St Philips, Bristol BS2 0XW Tel 0117 971 1917 Fax 0117 971 1727 |
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