Constructive criticism is VERY important, if not vital for any project assignment, presentation, proposal, etc. It gives one the edge needed to succeed, to me it's like a double edged sword. I appreciate all kinds of feedback - positive and negative.
The outer wall is made of regular bricks n cement EXCEPT we mixed both zero-chips and marble powder at the time of plastering or rendering. The disadvantage of using chips is that painting a chips wall is a NIGHTMARE.
The outer wall of our basement is essentially underground and after applying the cement plaster with zero chips/marble powder mix we covered the outer wall with bitumen on the outside.
The floor however is a different story, we used crushed rock which is non porous by nature and overlaid it with cement mix, then we covered the cemented floor with less than quarter inch of bitumen emulsion, sprayed it with sand before doing the final cement mix.It's nothing like what people usually do for their floors here. They just throw in crushed brick which absorbs water present underneath transferring it to the walls instead.
I have a solution for your walls but it involves re-plastering your walls MY WAY, but it also means wasting your current paint on the wall. If you do brave yourself up to the task, I guarantee you, your walls will thank you and love you for doing so!
Here's what you'll need to do. You'll need to scrap off ALL the paint on BOTH sides of your wall if its walls are detached or not underground. Next,
you'll need plenty of dry air to dry the walls out, I'd use hair dryer for at least 7 days for about 3 hours a day on each side if there was lack of sunlight falling directly above the walls and leave a fan ON on FULL SPEED inside the room and outside the wall of that particular area if possible.
After atleast a WEEK, next up will be your mason. Ask him to use marble powder and zero chips plaster the whole wall again (it will add a bit of thickness to your walls). After plastering you let your walls dry up for ATLEAST 4 DAYS. On the 5th DAY, ask your mason to give the plastered or rendered wall a total of 3 COATS of BITUMEN PAINT.
Here's the trick now, on your last coat of bitumen paint which is your third coat WHILE it's still dry, ask your mason to cover it with sand, he'll throw sand like as if he was using it over cement, he knows the movement. Once you've covered your bitumen painted wall with sand, You'll now ask him to plaster it as he normally would AFTER the Bitumen has dried off with the sand blinded on it.
Later on you can paint the walls however you like.
I know it's a lengthy process but it will save you lots of money and headache in the longer run.
