Is it possible to apply Gamazine directly on a concrete brick wall?

You always can, but it depends on what kind of finish and finesse you are looking for. And more important than that is to use the right products! They should come from a trusted name in the market in order to make sure that you get just the protection and support that you need. This is a onetime investment and hence there is no room for any compromise with quality here. So if you are wondering what about the company name to trust in such a case, then without batting an eyelid opt for Trimurti Products for a trusted and quality finish, that you are bound to admire.

I had to look up what "Gamazine" is - I had not heard of it. My first question is - why would you want to cover up the brick? Here in the states people go to extreme lengths to uncover real brick inside and outside of their homes! If you don't like the color or the finish, that can be changed. I would clean up the mortar lines a bit, scrape/chip off some of the excess mortar on the brick faces and give the surface a good scrub, probably a power washing rather than doing it the old-fashioned way with water and a scrub brush (unless you want lots of exercise). If you don't like how it looks after that kind of "clean-up," there are lots of different painting techniques and finishes that can be applied to either outdoor or indoor brick. White-washing is probably the easiest; some people call it lime-washing. You can find directions about how to do it all over the internet. Some pics of white-washed homes: https://www.pinterest.com/lin2b/whitewashed-brick-homes/?lp=true

Good luck with your project!

https://gamaking.co.za/gamazine

What am i doing wrong if th he colour of my wall is showing through the gamazine pattern??