I'm patching a wall in my Dad's kitchen after installing conduit drops and will be tiling over the plaster
Yesterday I plastered one of the walls with Blue Hawk Undercoat Plaster then Blue Hawk Finishing Plaster. Had no problems despite using a bag of plaster which has been open and sitting in the bunker for a few years.
This evening I abraded down that wall, cleaned up and started on another wall. I disn;t have enouh in the opened bag so opened a new bag of Finishing Plaster, same make 12.5kg bag, mixed with water the same way I did yesterday which was as per instructions. Bag was still airtight.. As I was applying it, over wet undercoat Plaster I noticed it was setting very quickly. At that juncture, just minutes from mixing, the finishing plaster in the tub was almost solid.
Is there something I am doing wrong? Maybe I opened the hot tap instead of the cold?
By the time I get a new bag of plaster the undercoat / bond coat or whatever it's called will be set and dry. Is that going to pose a problem for applying a good finishing coat?
Will I need to redo both coats?
Yesterday I plastered one of the walls with Blue Hawk Undercoat Plaster then Blue Hawk Finishing Plaster. Had no problems despite using a bag of plaster which has been open and sitting in the bunker for a few years.
This evening I abraded down that wall, cleaned up and started on another wall. I disn;t have enouh in the opened bag so opened a new bag of Finishing Plaster, same make 12.5kg bag, mixed with water the same way I did yesterday which was as per instructions. Bag was still airtight.. As I was applying it, over wet undercoat Plaster I noticed it was setting very quickly. At that juncture, just minutes from mixing, the finishing plaster in the tub was almost solid.
Is there something I am doing wrong? Maybe I opened the hot tap instead of the cold?
By the time I get a new bag of plaster the undercoat / bond coat or whatever it's called will be set and dry. Is that going to pose a problem for applying a good finishing coat?
Will I need to redo both coats?