Owner Builders
Straightforward supply for owner-builders, no trade account required.
Owner-builders need the same quality product as professional contractors. They just need clear information and honest advice rather than jargon. CSA is set up to help owner-builders get the right construction materials for their project, whether it is a shed, a carport, a granny flat or a full new home.
You can buy direct from our online store for standard profiles and lengths, or call our trade desk for help working out sheet lengths and quantities from your drawings. We prepare a cut-to-length cutting list if you need it.
Challenges we solve
- Calculating the correct number of sheets and lengths from roof drawings
- Understanding the correct fastener and flashing specification
- Getting material delivered safely to a residential site
How we serve you
- Online shop for standard profiles and lengths
- Free quantity take-off from your roof drawings on request
- Fastener specification advice included with purchase
- Residential delivery scheduling
Typical projects
- Owner-built shed or garage
- Carport addition
- Granny flat or secondary dwelling
- New home where the owner holds a builder licence
Relevant standards
Recommended brands
Owner Builders FAQs
How do I calculate how many roofing sheets I need?
Measure the length of each roof slope from eaves to ridge and add 50 to 100 mm for the eave overhang. Divide the width of the slope by the cover width of your chosen profile, which is 762 mm for corrugated, Trimdek and Spandek, then round up to the nearest whole sheet. Add 10 percent for waste. Our trade desk and the roof takeoff tool can do this calculation for you.