GU I D E TO ALUMINIUM
No more gasket call backs
We talk to Deceuninck Aluminium’s Nigel Headford, on how the
Decalu system, which is supplied with integrated co-extruded gasket,
can not only cut manufacturing and installation times, but put a host of
related problems to rest once and for all.
Gaskets; they’re the least talked about
part of any bi-fold or inline sliding
door – that is until they go wrong.
They swallow-up hours a week in
often unseen additional time in manufacture.
The same is true in installation. How many
fitters have stood on a freezing cold morning
warming up a gasket in a bucket of hot water, just
to be able to get on with glazing.
Then there are the other things that go with it,
shrinkage, failure, the kicking out of gaskets on
bi-folds – things that, individually, are minor in
themselves but when you think you could save
yourself a stack of time in manufacture, on site,
or cost on call-backs, they suddenly assume a lot
“Why are we discussing gaskets when we have
a complete aluminium system to talk about?”
says Nigel Headford, Deceuninck Aluminium.
“It’s because in most systems they are the thing
that fabricators and installers hate most and in
ours – they aren’t.
“If you get something as fundamental as that
right, manufacture, installation and through-life
performance is so much better.”
Decalu was launched by Deceuninck
Aluminium at the start of this year. It includes its
flagship Decalu88 bi-folding door which offers
‘U’ values as low as .68W/m2k, with individual
sash weights of up to kg.
This was followed the Decalu88 range of
contemporary casements, reversible, tilt and
turn, and heritage options; plus, the Decalu
Scand, which offers ‘U’ values as low as .8W/
m2k. Deceuninck introduced its lift-and-slide
option, Decalu6 at the beginning of June.
Highly engineered, it’s a true heavyweight
product, able to accommodate individual sash
weights of up to kg.
It followed this in July with the Decalu88
residential door. It features contemporary
sightlines and sophisticated styling. Deceuninck
Aluminium, however, brings the same focus on
substance that it has applied to style across its
range, with a maximum bowing tolerance of just
.mm under heat stress.
“They all feature a single inner frame and
mid-section, integrated insulation – and preinserted,
flush to the bead, co-extruded gaskets,”
continues Nigel. “That means the manufacture
is very similar across our offer and glazing during
installation is also the same.
“The gasket is there, pre-inserted into the
bead and backed with rigid PVC, so you don’t
get shrinkage. You line it up, and it knocks in.
The savings in fabrication are big – but even
bigger on site.”
SAVE TIME, EARN MORE MONEY
“I’d say if you have to rubber-up, it takes around
five hours, sometimes more, depending on if it’s
cold or not, to fit an ‘average’ three pane bi-fold.
This one I’ve done in three and that’s the first
time I’ve fitted it!”, says Kelvin Yendall, Precise
“That’s the installation and then I’d say around
-minutes, sometimes more, to glaze each
panel, depending on the temperature – then it
can often shrink with time and you get call backs.
“That compares with less than five minutes per
pane on this Decalu88. It’s an easy process, it
snaps into place and you get a nice low sightline.”
The Decalu88 bi-folding door also employs
adjustable jambs, each offering up to £mm
tolerance for out of square brickwork, making
GUIDE TO ALUMINIUM www.ggpmag.com
door setting simpler.
“It’s very easy to take off to fix behind it,”
explains Kelvin, “all the fixings are then hidden
once you put it back on. It’s a nice feature
because I don’t like seeing any fixings in a
Combined, Kelvin said he believed that the
time saved on setting the Decalu88 Bi-fold
compared to other systems plus the efficiency
gains delivered by its gasket systems, would allow
him to increase his productivity by %.
“I’d normally book out two installs a day, with
the time I’ve just saved on getting the gasket in I
can book a third job a day in.”
Nigel continues: “I’d like to reiterate, it’s not
only the installer who benefits here. It’s the
fabricator. “Typically, with more traditional
systems, fabricators would have had around
eight frame and sash components, but with
Decalu, there is just three.
“And they don’t have to worry about rolls and
rolls of gasket. It speeds up manufacture but it
frees up labour as well, as there is no need for
someone to apply it.
“If you consider the cost of the process in
terms of the time that it adds to your line and
to manufacture, plus the cost of employing
someone to insert the gasket, your labour
savings are probably £, a year and then
depending on how many doors or windows you
do, tens of thousands on efficiency gains.
“And your customers are going to be happier
too. It’s a no brainer.”
Each is also supplied in dual colour, marine
grade and textured finishes – as standard –
emulating the focus Deceuninck has applied to
PVC-U foils in aluminium.
“The gaskets are such a big win. You aren’t
fabricating or fitting something that’s storing up
problems down the line and you’re saving time
“The other thing that we perhaps haven’t
touched on so far is the aesthetic," concludes
Nigel. "It’s a flush finish, the gasket melts away
into the bead, you don’t see it. It’s a very strong
feature at point of retail because you can
demonstrate that it’s tangibly different.”
Precise Glazing's Kelvin Yendall highlights
significant savings in time and money with
Decalu's co-extruded, integrated gasket