The iron itself comes in Galv, Zincalume and Coloursteel. ColourSteel comes in different grades depending on where it is used. Most roofs are roofed in standard coloursteel. Roofs close to the sea or corrosive enviroments are done in higher grades which are more expensive. Installation instructions for coloursteel are extensive. All roofs installed by us are in accordance with the NZ Building Code. The code requires roofs to last at least 15 years but in some places up to 50 years.
The roof profile used depends on the slope of the roof and not just how it looks. Corrugated iron does not work below 8 degrees so a different profile is used.
Corrugated Iron 8 degree pitch minimum
Trapeziodal Profiles 3 degree pitch minimum
There are many here is one.
Dimond 400
The original traydek roofing there are many similar profiles
Call us on 0800 484 353 0800 HUGE LEAK
