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offer a full range of intumescent materials and mastics as part of our dedication
to providing full solutions to every installation.
in the case of intumescents, this material is often used in conjunction with
locks, hinges and fire doors to protect buildings from the spread of smoke and
fire. An intumescent substance is a material that expands when it is heated.
For the purpose of fire safety, intumescent material is commonly used a gasket
around a fire door or window and in the event of a fire, the material will heat,
expand and close the gap between door and door frame or window and window frame
and in this way restrict the spread of smoke and harmful fumes around a building.
SLS offer the Astroflame range of intumescent products. Astroflame is a market leader in the development of intumescent materials and their products are widely recognised as the standard when there is a requirement to stop the spread of fire and smoke through a building. Please click on the logo below to visit the Astroflame website.
materials are supplied in a variety of forms and can be applied to most applications
where a gap would need to be sealed in the event of a fire. Some examples include
the following -
graphite based intumescent material contained within a PVC sleeve which
is designed for fitting into rebates in either the door or door frame
of fire resisting door assemblies. When activated by heat from the fire
the intumescent material expands (intumesces) to many times its original
volume to provide an effective fire resisting seal between the door and
its frame against the passage of fire, smoke and hot gases.
Fireseals are available with or without a cold smoke seal and all are
supplied with a self adhesive backing tape as standard to facilitate quick
and easy fitting. The seals are available in a choice of colours to suit
your requirements or blend with decor.
graphite based intumescent material available in various widths, which
can be easily cut for fitting behind hinges, door closures and strike
flexible self adhesive polymer based extruded intumescent material suitable
for sealing wired or fire resistant glazing into wooden fire doors and
fire resistant partitions. On exposure to heat from a fire the tape swells,
thus prohibiting smoke and flame from passing through the aperture between
wood and glass, providing resistance in excess of 1/2 hour. Supplied in
roll form it offers the user a high performance, non load bearing tape
for accurate placement, with no waste and requiring no specialist applications.
one part fire rated intumescent acrylic mastic designed for sealing gaps
around fire doors, window frames and for sealing joints, voids and irregular
holes in fire rated structures, and for maintaining their integrity when
sealing around pipes and cables that penetrate them.
mastic has been independently tested in accordance with BS476: Part 20
& 22: 1987 and can provide up to 4 hours fire resistance depending on
depth/width and volumetric area. Can be used on most construction substances,
although we do recommend that a small area is tested on unusual substrates.
can be used in most low movement joints up to 25mm wide with no slump
and can be overpainted.