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Coloured Bitumen
Sheets
Introduction
by SLE Cladding Ltd.
Onduline Sheeting is manufactured in Rouen, France and imported into
the UK. It is used extensively in Europe but until recently it has
not been so popular in
Britain by reason of it needing a lot of support. The British
favour long sheets (Onduline comes in 2 metre long sheets only)
and purlins as wide apart as possible and few in numbers. (Onduline
needs a a lot of support)
Having said
that it does have its many good points. It's lightweight and thus
suitable for oversheeting. It's flexible for un-even and curved
roofs, it's very environmentally friendly, containing only bitumen
and vegetable fibres and no metal. This makes it ideal for coastal
regions, where salt spray corrodes metal and also in some corrosive
industrial environments.
Whilst it will never
challenge the dominance of Plastic Coated Steels and Fibre-cement it
the UK, it does have a considerable niche market mainly in the
leisure, DIY and environmental areas. I.E holiday
chalets, sports pavilions, stables, farm shops, golf ranges etc, and
by reason of it being an excellent easy worked DIY material,
garden sheds, garages etc .
Warning. Don't erect it within
the reach of livestock. A customer's donkey ate a hole in the side
of it's brand new stable.
ONDULINE
What the manufacturers say.
A tough
flexible, but lightweight roofing/cladding sheet manufactured from
bitumen saturated organic fibres. Available in five environmentally
sensitive colours giving an attractive finish and long life at an
economic price, BBA Approved. An ideal replacement for corrugated,
asbestos or felt pitched roofs. Suitable for coastal or corrosive
environments. Withstands high wind forces.
Unlike
some materials, Onduline's colour is integral throughout. Sheeting
will not fade or discolour.
Onduline
is virtually indestructible, rust-rot-frost resistant. Apart from
occasional cleaning, maintenance is not required.
Onduline is ideal for re-sheeting damaged felt roofing.
Onduline
has been tested at wind speeds up to 120mph (192km/h). At tests
at the Yardley Research Centre have found Onduline suitable in hurricane
and earthquake conditions.
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| Onduline has BBA certification
meaning that its quality and specification has been approved
by the British Board of Agrement. It is also approved by most
of the world's assessment authorities. Over Experience gained
over 50 years confirms that the life expectancy of Onduline is
many times that figure. |
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Renovating Old Buildings
Onduline
is idea for renovating old buildings in exposed regions, especially
where roof timbers are old and uneven.
Onduline
is lightweight at only 6.3kg per sheet. It puts minimum stress on
roof timbers. It is therefore ideal for lightweight pitched roof
structures and for oversheeting damaged mineral felt roofs and old
deteriorating corrugated roof coverings.
Onduline Sheet
Specification
Standard
sheet size 2000mm
x 950mm
(78.25 ins x 37.25 ins approx)
Cover width 846mm (33žins), Nominal Thickness
3mm (1/8ins)
Nominal material weight 3.3 kg/m2
Sheet weight approx 6.4kgs (13.9lbs).
Colours
Available
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| BLACK |
BROWN |
GREEN |
RED |
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Support.
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Onduline sheeting does require
supporting at closer centres than metal based |
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| Roof Pitch 5 to 10%
Support on decking or close boarding |
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| Roof Pitch 10 to 15%
Support purlins at a maximum of 450mm |
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Roof Pitch 15% and
over. Supporting purlins should be at a maximum of 600 mm centres.
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Sheet Dimensions |
| Length |
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2m |
| Width |
|
950mm |
| Coverwidth |
|
855mm |
| Thickness |
|
3mm |
| Corrugation width |
|
95mm |
| Corrugation height |
|
38mm |
| Weight of material |
|
3.3kg/m2 |
| Weight of sheet |
|
6.4kg |
| Thermal
resistance R Value |
|
0.04mK/W |
| Thermal
conductivity |
|
0.066W/mk |
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Lightweight |
| At only 6.3kg per sheet
Onduline puts minimum stress on roof timbers. It is therefore
ideal for lightweight pitched roof structures and for
oversheeting damaged mineral felt roofs and old deteriorating
corrugated roof coverings |
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Wind speed |
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With the predicted increase in gale force winds in the UK it
is assuring to know that Onduline sheets are independently
tested and proven to withstand speeds up to 120 mph (192
kph). In a gale the
most vulnerable part of a building is the roof. Tests carried
out at the Yarsley Research Centre (UK) and in Miami and
Metropolitan Dade County (USA) have proved Onduline suitable
in hurricane and earthquake conditions. Tested at windspeeds
up to 120mph. |
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