Paper tape is the strongest system for plasterboards. With regards to the tape bubbling it’s usually due to insufficient material behind the tape to adhere to the paper.
Plastering trowels are slightly curved which in turn puts to much pressure on the tape and pushes the material out and leads...
Should be pretreated with (BG head) Thistle Bond-it for adhesion. Pretty pointless skimming onto MR board as you are introducing gypsum to a moisture resistant material. I’ve seen a lot of failures, mainly above the shower due to the steam. Another thing to consider is the weight of the tiles...
Don’t forget one minute think that by sticking some soundbloc plasterboard will resolve any sound issues. For it to be effective it needs to be part of a system to really give you much benefit
Bond it is spec’d to go over tiles provided that they are cleaned properly first. Might be worth mentioning that if they tile on top it might fail from behind the original tiles
Very true, not forgetting the different substrates, how long it’s mixed for, how long the boards have been up, even the type of water effects it but that’s not to say BG don’t want to hear of any issues folks have
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