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To compare shed quotes you need to know this...
Understanding metal thickness
The thickness of steel is usually measured in BMT (base metal thickness). This gives you a measurement of the steel BEFORE PAINTING, and is a true indicator of the strength of the steel sheeting.
TCT (total coated thickness) measures the steel AFTER PAINTING.
Colorbond® paint coating is .05mm.
Therefore, when comparing the sheeting thickness on your shed quote, make sure you are comparing either BMT or TCT. The table below gives an understanding of the different Colorbond® steel thicknesses that may be provided in your shed quote.

.35mm BMT = .40 TCT

.42mm BMT = .47 TCT

.48mm BMT = .53 TCT


Genuine Warranty
BlueScope® Steel offers a warranty of up to 15 years from the date of installation against corrosion and perforation by weathering in the natural elements, for roofing and walling for sheds and domestic garages located greater than 1km from a marine environment.
As is the case with all genuine warranties, BlueScope requires you to send a warrany application form. This must be done as soon as construction is completed. shedsales.com.au will send you the necessary application forms with your shed documentation.
Roof and Wall Sheeting
We understand that every customer has individual requirements and tastes. The type of sheeting you choose will affect the appearance, the strength and often the price of your shed.
On this shedsite, as you design your own shed, we do a little hand-holding. Where choices need to be made, click what's this mean... for critical information to help you make the best selection for your situation. This includes the likely pricing implications for each choice.
However, before you click design your own shed, below is an overview of our roof and wall sheeting materials.
 
Wall Sheeting  
  • Made from the highest quality BlueScope's Colorbond or Zincalume materials – carrying the best genuine warranties available on the market
  • You have a choice of corrugated, Trimclad and Metroclad
  • shedsales.com.au does not cut corners. We supply colour-coded screws with all Colorbond roof and wall sheeting. For greater strength we use corner flashings on all buildings – we don’t bend the wall sheeting on the corners which may weaken the sheet and cause rusting. Naturally we supply colour-coded rivets with Colorbond flashing.
Roof Sheeting
  • Made from the highest quality BlueScope Colorbond or Zincalume materials, carrying the best genuine warranties available on the market
  • You have a choice of corrugated or Trimclad
Corodek - corrugated
(N.B. Corrugated may require more purlins in the roof frame which will add to the overall prrice.)
  • a corrugated sheeting suitable for roof and wall applications
  • made from either Colorbond or Zincalume
  • available for roofing or walling in .42mm B.M.T.(base metal thickness)
  • not available in .35mm B.M.T.
  • a popular choice for a more traditional Aussie appearance
Corodek
0.42mmBMT		Maximum purlin spacing
Roof sheeting		Maximum girt spacing
Wall sheeting
End spans900mm2200mm
Internal spans1200mm2600mm
 
For more technical details or to download a Corodek brochure click here
 photo of corodek sheet
 tech drawing of corodek
 
Trimclad
(N.B. Trimclad allows a faster rate of water run-off, owing to its higher ribs. Therefore, it may be a better choice for roofing in areas where rainfall intensity may be high.)
  • a strong ribbed profile suitable for roof and wall sheeting
  • made from either Colorbond or Zincalume
  • available for roofing in .42mm B.M.T.(base metal thickness)
  • available for walling in .35mm B.M.T. and .42mm B.M.T.
  • the most popular industrial and wall sheeting profile
Trimclad
0.42mmBMT		Maximum purlin spacing
Roof sheeting		Maximum girt spacing
Wall sheeting
End spans1000mm1800mm
Internal spans1700mm2200mm
 
Trimclad
0.35mmBMT		Maximum purlin spacing
Roof sheeting		Maximum girt spacing
Wall sheeting
End spansNot suitable1500mm
Internal spansNot suitable1800mm
 
For more technical details or to download a Trimclad brochure click here
 photo of trimclad sheet
 tech drawing of trimclad
Metroclad
(N.B. Used in wind regions A & B; not used in wind region C. Metroclad850 is a wall profile only - it should not be used for roofing purposes.)
  • a low rib height profile suitable for wall sheeting
  • has a wider 850mm coverage (corrugated and Trimclad cover 762mm)
  • made from either Colorbond or Zincalume
  • available for walling in .35mm B.M.T. and .42mm B.M.T.
  • additional girts and purlins may be required, especially for .35mm B.M.T.
  • NOT SUITABLE for roofing
 
Metroclad
0.42mmBMT		Maximum purlin spacing
Roof sheeting		Maximum girt spacing
Wall sheeting
End spansNot suitable1100mm
Internal spansNot suitable1400mm
 
Metroclad
0.35mmBMT		Maximum purlin spacing
Roof sheeting		Maximum girt spacing
Wall sheeting
End spansNot suitable950mm
Internal spansNot suitable1200mm
For more technical details or to download a Metroclad brochure click here.
 photo of metroclad sheet
 tech drawing of metroclad
(Photos and diagrams provided by Metroll®. Corodek®, Trimclad® and Metroclad® are registered trademarks of Metroll. Colorbond® and Zincalume® are registered trademarks of BlueScope Steel Limited.)
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