What is the best solution for ticking POP plaster to MDF.

[layibos]

Please I need your advice.
I used a 8mm thick 4ft by 8ft MDF board for ceiling for an office space.the laminated surface was turned inside the roof to stop water incase of a roof leakage in the future while the plain surface which does not carry a laminated surface was used in the interior of the building.The MDF plain surface was nailed to the ceiling with a 1 inch nail.
after installation,
For the screeding, I now used a POP plaster,POP paint mixed with Top bond(glue) for effective screeding and also used joint tape or netting tape for the joint where the MDF board are meeting each other.After six(6) months that the job is completed and painted with emulsion paint and the space is undergoing it function.The PoP plaster screed is peeling off from the surface of the MDF board and they are some cracks on some areas which will soon peel off too.
Please, what can I do?

 

[stevethespreader]

you used plaster of paris plaster on mdf board? for a ceiling? never heard of that before is that common place in nigeria ? or just you making a balls up? i cant see that working no wonder you have cracks and why has your post got youtube on it? was it copied from youtube?

 

[layibos]

I did use the POP plaster on MDF board of 3mm thickness.....it was not copied from you tube....I was thinking maybe I could upload a video of the space for you to see...There is always inventions,so I tried invent my own method of construction...whoops.

 

[stevethespreader]

I did use the POP plaster on MDF board of 3mm thickness.....it was not copied from you tube....I was thinking maybe I could upload a video of the space for you to see...There is always inventions,so I tried invent my own method of construction...whoops.

it would be intersting to see so if you can upload this to youtube we would be very interested to take a look, but i think the best thing you can do is take it down and replace with plasterboard if you want a proper job