Dear builders and painters of Ozbargain, looking for your professional opinion on this: https://prnt.sc/ieyl5y
Our building is covered in white marks after a winter of rain. The builder claims: "It's limeburn which can occur after darker colour paint mixes with water and wind damage damage over time." and he doesn't deem this to be a building issue.
The building is 3 years old. Is it unreasonable to expect the paint to last longer? Did the painter cut corners by not applying a lime block coating to the render first? (http://www.resene.com.au/homeown/problem-solver/lime_burn.ht… )
Interested to hear your opinion :)
Get a gerny and wash it off