ducting is widely used in both domestic and commercial
Both walls and floors are subject to fire regulations
and must be fire protected in accordance with Approved
Document B of Building Regulations.
Once a hole is made in a wall or floor for PVC ducting,
the integrity of the construction and its ability to
perform in a fire is reduced significantly, this must
be firestopped to reinstate the original fire rating
of the wall or floor.
The popularity of forced / controlled ventilation is
on the rise as it can be much more energy efficient
than traditional ventilation methods. The use of centralised
ventilation units and heat recovery units, result in
the building being subject to penetration holes both
horizontally and vertically through the structure, creating
pathways for the passage of both fire and smoke.
To combat this a range of FIREFLY 109 Duct Fire Sleeves
has been developed.
Key Features &
and maintains the fibre protection of walls and floors
for up to 120 minutes.
fits in seconds.
mastic, screws or support required.
do not require "boarding out".
allow ducting to run tightly against the ceiling or
can be fitted from one side of the wall or floor.
provide an effective acoustic barrier between duct wall
to fit all popular duct sizes.
both vertically and horizontally through a wide range
of wall and floor constructions.
Duct Sleeve Installed
Duct Sleeve Installed
109 Duct Fire Sleeves have been tested
and third party assessed for the following
120 minute constructions
Mineral wool systems (circular
PVC VENTILATION DUCT FIRE SLEEVES
FIREFLY 109 Sleeve has been developed to provide maximum protection
for holes created by the introduction of the most popular sizes
of PVC ducting with minimal installation time. In a fire situation,
the sleeve expands internally to crush the duct and create an
effective barrier against both heat and flames. Unlike other "intumescent"
materials the FIREFLY 109 Sleeves do not need additional support
and will only expand inwards.
*Use the sleeve as template and cut a hole in the floor
or wall to provide a snug fit.
If ducting is already in place then cut along the length
of the sleeve with a sharp knife, opening the sleeve to
wrap around the duct, repair the cut with the tape provided.
If the duct is running tightly against the ceiling then
the adjacent side of the sleeve can be cut away leaving
a "U" shaped sleeve.
Slide sleeve along the duct and into the cavity, ensuring
that the sleeve has at least 25mm protruding from each
ask questions or receive information about PVC Ventilation Duct
Fire Sleeves, please use the form below.