Originally Posted by
Airportwo
I was reminded of the following after reading the remarks about re-bar rust.
I had a good builder for the house I am currently living in, one area we didn't see eye to eye on was the roof construction, first they coat the steel in red lead primer - which is just about useless, primers need a "sealer" especially given your location I would make sure that the steel gets a decent "coating" best being a 2 pack paint system. We stopped using Red lead in shipyards 35 years ago, think Thailand bought up all the excess!
They like to cut the steel using an electrode, which is 'bad practice" to be polite! They were not happy when I made them start cutting with a cutter/grinder, there are some good welders in Thailand, not one of them came any where near my roof, some of the birdshit they called welding was bad! At the end of the day it came out ok, we don't get near the humidity that you get in your location which influenced me accepting some of it. I was trying not to be too harsh on them, I was working in Singapore at the time building a billion $ MODU project for the GOT, so had to try adapt to slightly different standards!
Just something to bear in mind, I lived in Pattaya for 15 years and it wasn't unusual for roofs to rust out in the area, the "steel" is such poor quality, once it starts to go the only thing to do is replace it, prevention is better than cure!