Page 11 - Rationel Windows | Operation & Maintenance

Condensation on the outside of the pane cannot arise on old traditional panes.
On old types of panes there will always be some heat transferred through the
glass to heat up the outer piece of glass.

CONDENSATION ON THE INSIDE OF THE WINDOW – VENTILATE!
If condensation is placed on the inside of the pane it is a sign that the relative
humidity in the home is too high. The humidity should be brought down if you
want to avoid rot, damage caused by a damp and unhealthy indoorclimate.

CONDENSATION BETWEEN THE TWO PIECES OF GLASS –
THE SEALED UNIT IS PUNCTURED!
Condensation can also appear inside the pane between the two pieces of glass.
This is a sign that the sealed unit is punctured and should be replaced.

FINGER-JOINTED TIMBER

Rationel use finger-jointed timber to produce windows and doors. That means
that all significant knots are removed from the timber to minimalise resin
extract. As timber is a natural living material there maybe further resin extract
occuring after manufacture.

Resin extract can be removed in the following ways:
• Use a soft cloth wet with white spirit to remove the extract - wipe it off
gently. Wash the area with clean water afterwards.

• Resin that have crystallized can be removed with a brush or scraped away
gently.

If the painted surface has been damaged during this process sand the area and
apply new paint with a soft brush.

WARRANTY

Rationel Windows are affiliated to the Danish Window Verification, which means
that all of Rationel’s products are DVV-certified. DVV continuously inspects the
products and the production making sure that both as a minimum meet the
demands defined in VinduesIndustrien’s - The Association of Danish Window
Manufacturers - technical regulations.

The warranty covers manufacturing or material defects on windows and doors
delivered and used in the United Kingdom. The warranty is valid for 5 years
from the date of production. The panes are covered by the Glass Industry’s
warranty for punctured panes (5 years) and visual defects (1 year).

Please state the order number for the defective window or door when contacting
Rationel. The order number is a 6 digit code that is printed in the spacer bar
between the two pieces of glass in the pane.
The warranty is not valid if the defect is caused by careless operation or lack
of maintenance.

If the warranty claim is a result of incorrect installation, the claim should be
directed towards the installer.

11