In areas within the direct influence
zones of salt water, industrial
chemicals plants, blast furnaces or
other aggressive emission sources,
the window should be cleaned at
least every three months. In a
relatively cleaner environment every
six months should be sufficient.
In carrying out regular maintenance
outside, the internal surfaces are
frequently neglected. After a period
of time, grime and deposits or from
tobacco smoke, coal and oil fires, etc.
can discolour the inside window
frame and it is recommended that
these should be cleaned at least
once per year.
Wash down with clean warm water
containing non-alkaline liquid
detergent (in concentration which
can be handled safely with bare
hands) using non-abrasive cloth,
sponge or soft bristle brush.This will
remove grime, grease, and any
excess chalking. All ridges, grooves,
joints and drainage channels where
salt or other deposits can collect
should be well washed out, thus
preventing corrosion sites from
Rinse thoroughly with clean water.
Dry using a soft cloth or leather.
Where a reduction in gloss is
observed, chalking is evident or
excessive staining has occurred, then
an approved renovating cream may
be carefully applied with a nonabrasive
Note: T-Cut or similar automotive
paint restorer may be used provided
it is not too abrasive!
Care must be taken not to abrade
sharp corners of sections or aris of
beads too heavily where the paint
film is normally thinner, and it
should be remembered that this
operation should not be carried out
Polish with a soft cloth to restore
gloss and colour uniformity.
Hinges and locking mechanisms should
be lubricated periodically to minimise
wear and to ensure smooth operations.