| What you need to know about Roof Sheeting... |
| Material Thickness |
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For roof sheeting, manufacturers recommend
a material thickness of 0.42mm BMT (i.e. 0.47mm TCT)
or greater. Our roof sheeting follows manufacturers' recommendations.
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When comparing quotes be sure you check
that other companies quote on roofing material that follows
manufacturers' recommendations for material thickness.
Also, make sure you read our information below on purlin spacing.
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| Your Choices |
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We offer Trimclad and Corodek (corrugated) profiles. Both
profiles cost the same per square metre of actual sheeting. Corodek may end
up being more expensive if extra purlins are required. See Corodek below.
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| Trimclad® |
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Trimclad is a stronger profile. Hence it allows for a
slightly wider purlin spacing in the roof frame. In some cases it may mean
fewer purlins are required.
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Trimclad is a deeper profile. Hence it
can handle runoff from a higher rainfall intensity.
View Trimclad brochure.
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| Corodek® |
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Corodek (corrugated) is often chosen if people want to
have the more traditional Aussie appearance. It has slightly narrower maximum
purlin spacings than Trimclad. In some cases more purlins may be required.
View Corodek brochure.
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| Purlin Spacing |
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Manufacturers specify minimum roof support spacings (i.e. purlin spacings)
for their roof sheeting materials. The table shows
the maximum recommended purlin spacings in non-cyclonic areas (i.e. Region A and Region B).
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In the next step of your quote, Framing Options, you can view the purlin positions
in each of the frame options available to you. These are calculated to always meet the requirements
for the roof sheeting you select.
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Also, the detailed quote you receive by email from us, will show the number
of purlins and their respective spacings. This will enable you to do a thorough comparison with
other quotes. When comparing quotes be sure you check
that other quotes meet manufacturers' recommendations for purlin (support) spacing
with roofing material.
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| Roof Profile | Trimclad
0.42mmBMT | Corodek
0.42mmBMT |
| End spans | 1000mm | 900mm |
| Internal spans | 1700mm | 1200mm |
Taken from Trimclad and Corodek brochures
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