plastics - The customer magazine from BASF 2/2007

Markets and products
Building in record
time with
PURHOLZ.
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Since the 1970s, PURHOLZ, a
German company from Mittweida
near Dresden, has been
producing sandwich elements with a
PUR core. These elements are used
in construction – for do-it-yourselfers,
for home improvers or for contractors,
and even for turn-key projects. This is
a clever idea that is generating interest
– and even quite a few converts
– among proponents of conventional
construction techniques.
Money is in short supply, building is expensive
and environmentally sound houses are
by no means a given. So, why not look for
intelligent and cost-efficient ways to get
out of this bind? This is why PURHOLZ’s
approach from the very start has been to
offer something for every taste, for every
size, for every budget and without long
waiting times. The result: many satisfied
homeowners and a successful company
that is the only one to offer such a trendsetting
and environmentally friendly product.
And more and more house builders
are wondering why they should continue to
build with brick upon brick when the alternative
– sandwich upon sandwich – entails
such convincing advantages.
Sandwiches ensure
a pleasant climate
The sandwich element PHONOPUR plus
is, so to speak, the core of the PURHOLZ
product line. It has a 60 mm-thick filling
of polyurethane rigid foam as well as two
covering layers made of oriented strandboard
(OSB). The PUR system Elastopor
ensures a high thermal-insulation rating.
Sound insulation is provided by a mineralwool
board on the OSB panel and the
final Fermacell top layer offers protection
against moisture. This translates into ideal
thermal-insulation values in the winter and
into a pleasantly cool atmosphere in the
summer. The PHONOPUR plus panels are
employed as self-supporting core elements.
Consequently, there is no longer a need
for additional supports and girders. This
mode of construction can be completed
in record time for houses having up to two
stories and an attic. All of the sandwich
wall elements are manufactured according
to individual specifications. They can have
load-bearing supports as well as openings
for doors and windows, empty conduits for
the electrical and plumbing installations and
much more. Moreover, owing to the framed
construction technique, it is possible, for
example, to replace walls with windows,
as desired. And that makes room for one’s
own ideas. Considering the fact that the
annual heating costs (including heating for
hot water) for an approximately 160-m 2
single-family house that is occupied all year
round lie well below 1000 euros, even builders
who swear by brick houses might start
to have second thoughts. And now a small
consolation to wrap things up: PHONO-
PUR ® plus elements are, of course, also
available for renovation work on conventional
buildings.
Further information:
www.elastogran.de
Background
PUR sandwiches
Material:
Elastopor ® H rigid-foam systems
Application:
Prefabricated sandwich panels made of
wood with a PUR core for houses
Properties:
high insulation rating, fire and acoustic
protection, flexible and economical
construction technique, short construction
times, meets high architectural
design requirements
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