Requirements conforming
to building sealing standards

 Airtight
(EnEV/ DIN 4108/ DIN 18542)

 Weather tight (DIN 18542)

 Thermal insulation (EnEV/ DIN 4108)

 Temperature stability (DIN 18542)

 Compatibility with other   
building materials (DIN 18542)

 Acoustic Insulation (DIN 4109)

 Fire protection (DIN 4102-1)

 Humidity / vapour protection

EnEV stipulates that all
window seals should comply
with their regulations.

Tests have shown that a large amount of
heat loss is caused through inappropriately
sealed joints, e.g. on windows and doors
(convection-heat loss).

The blower-door process can easily and
quickly determine the air tightness of a
building. Air is blown out of the building,
with the use of a ventilator at a constant
pressure (50 Pascal) and the escaping air
volume is measured. The given results
are the same as the air volume which
would be forced into the building if it was
not professionally sealed. Should the
value be higher than n50**, then the
building is classed as incorrectly sealed.
The builders are liable for repairs and
construction damages.

**n50: the DIN 4108-7 states the exact
air exchange rates (n50) values.
The volume of air permeability per hour
should not, in naturally ventilated
buildings, be more than 3 times the
overall volume. In buildings with air-
conditioning systems or low energy
houses not more than 1.5 times.

Conforming with the energy saving
regulations “EnEV” for window installation

The new energy saving regulation “EnEV” specifies, that all buildings conform
to the state of the art for constant air impermeable sealing and specify that
the loss of heat through building joints be substantially reduced.

Based on these requirements, a special seal is required for the window
perimeter (between frame and wall element), which is both compatible
and effective.

When using the appropriate products and/or systems supplied by ISO-Chemie
not only do you achieve a weather and airtight joint that also has both
thermal and acoustic insulating properties, but you also comply with the RAL
principals of “inside tighter than outside”. As a result a good room ambience
is achieved plus reliable humidity protection, so that condensation does not
lead to building damage.

Your advantage

Our products are tested to exceed the legal standards and regulations. This
means that you have the guarantee that our products are state of the art.

10 years functional guarantee*

on our innovative window sealing solutions. This means that you reduce your
own risk and you have the certainty that you are installing a reliable seal for
your customers.

Product range from one source

You receive the complete window sealing system first hand, from a single
source. This saves time and gives you reliability, because our products are
made to complement each other.

Quality tested

The iso³-Window Sealing System is an all round multi-functional sealing
system. The quality of our products is tested on a regular basis by
independent institutions.

ISO-Chemie Service

We offer comprehensive advice and quick delivery. Thanks to our flexible
logistics, we are in a position to deliver all our products within a short period
of time and where required with reference to project names. This allows you
more freedom when planning, as well as reducing storage capacity.

*to manufacturer’s conditions (available upon request).