Hi,
Trying to skim plaster my first ceiling but have run into a problem. The plaster isn't sticking to the joint compound.
The ceiling is made up of 2 pieces of plasterboard. I jointed the 2 boards using self-adhesive mesh jointing tape and then Blue Hawk jointing compound. Then left for at least 24 hours to dry (one bit was an entire week).
Using Thistle Board Finish plaster, which seemed fine and adhered to the board as expected BUT where I've skimmed over the joints the plaster is literally peeling away from the joint compound, taking a fine layer of the joint compound with it.
Anyone know why this would be?
Am I missing a step, did the joint compound need some kind of sealer or PVA or something?
Any help gratefully appreciated!
Steve.
Trying to skim plaster my first ceiling but have run into a problem. The plaster isn't sticking to the joint compound.
The ceiling is made up of 2 pieces of plasterboard. I jointed the 2 boards using self-adhesive mesh jointing tape and then Blue Hawk jointing compound. Then left for at least 24 hours to dry (one bit was an entire week).
Using Thistle Board Finish plaster, which seemed fine and adhered to the board as expected BUT where I've skimmed over the joints the plaster is literally peeling away from the joint compound, taking a fine layer of the joint compound with it.
Anyone know why this would be?
Am I missing a step, did the joint compound need some kind of sealer or PVA or something?
Any help gratefully appreciated!
Steve.