Given
that different metals should not be in contact and that
the connection of sheets must allow for their contraction
and expansion, covering roofs with flat lead sheets must
be done with folding or with the help of wooden shims. The
shims are used for connections perpendicular to the runoff,
while folding is used for connections parallel to the runoff.
All connections must be straight. Installation of the sheets
stars by fixing the fontal sheets on the runoff line, as
well as on the frontispiece and leading to the crest.
In contrast with other materials, lead sheets remain unaltered
as time passes, have considerably greater resistance to
adverse environmental conditions (40 C heat - -5 C cold),
do not rust and need low maintenance in repairing of cracks
from heat as time passes. Especially in coastal areas, lead
sheets are not affected by sea salt (since lead is used
in ship's keels) and generally are a very sturdy material
with anti-seismic characteristics.
The sheets are supported onto the existing contsruction
(concrete or simple masonry) either stuck-on or with wall
plugs and screws.
In our country as well as abroad, architectural use of lead
sheets focuses on small or large works.
Illustrative examples include church cupolas , which are
perfectly covered by the lead sheets, and insulated from
humidity, lightning, etc. which often cause damage to hagiography;
this insulation contributes to its resistance and aesthetics
through the years (Hagia Sofia, Constantinople). Also, lead
sheets provide soundproofing and radiation-proofing. They
can be fixed onto every type of roof.
Our company certifies, based on a study performed by the
University of California (Department of Energy), that use
of lead is most proper for soundproofing and radiation proofing
(with sheet width of 2mm or more).
We thank you and we are at your disposal for more information.
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