sheets are manufactured by impregnating organic
cellulose fibres with bitumen under high temperature
and pressure. The sheets are pre pigmented with
special purpose resins. The impregnation of colour
into the sheets is done using patented techniques
that enable the sheets to retain their colour
over a longer period of time even under harsh
conditions. The patented manufacturing process
ensures uniform bitumen penetration into the sheets
providing an excellent dimensional stability to
the product and thereby preventing delamination.
sheets offer the following benefits:
Excellent waterproofing characteristics,Can be
used in extreme climatic conditions High insulation
and sound absorbency values,Resistant to corrosion-does
not rust, rot or become brittle Light weight-
6.4kg per sheet of 1.9m2 area, Can withstand wind
speeds up to 192km/hr.
Does not break during transportation and installation,Available
in a range of environmentally sensitive colours,
Excellent colour retention, Requires minimum maintenance.
Contains no hazardous chemicals
Onduline is a flexible material that can be easily
installed on various surfaces including Steel
Truss work, wooden structures and on concrete.
Onduline sheets can be cut as required and can
be used on round roofs as well.
The minimum recommended slope for fixing the sheets
directly on the roof is 10 degrees. In case the
slope is lower than this value, we recommend a
full decking on the roof
frames with slope below 10degree slope, the end
overlap should be 30cm and the side overlap should
be 2 corrugations.