I waited a few weeks for the plaster to be really dry, as I was worried the heat gun might cause it to crack. It was generally fine, but there was one area which it cracked - eek! :(
I still have more to do around the door stops, I only did the edges next to the plaster, as I'm going to be honest, I was itching to get the paint on the wall!
So for fresh plaster, you have to paint on what is called a splash coat. This is typically a watered-down emulsion coat, as the plaster will be really thirsty. The plaster drinks in the water and it's a good starter coat before you put your more expensive colour coat on. I generally use cheap white matt emulsion paint, but you can use any matt emulsion - just make sure you don't use vinyl emulsion.
I probably watered it down 50/50 to start with, so half paint half water. The paint doesn't always mix well with water though - it takes a while to get it consistently mixed. I actually used a whisk to get it all mixed - not conventional, but it got the job done!
The 50/50 mix was waaaay too much water! So this happened...
Then I read the instructions on the paint tin, and it said 20% watered down on fresh plaster. I measured out the paint to water ratio using a plastic cup and that worked well.
After I got the ratio right it went on much cleaner!
I did all this while the hubby was out so I had to leave the corners that I couldn't get to with the roller on an extension pole. When he got home we got the ladder out and got those bits done.
I still need to sort the area of the loft hatch out. I will actually change the loft hatch, but it's the area around it that will need a bit if thought and work.
There was one area of the ceiling down stairs that didn't take the paint too well - I'm not quite sure what was up with the plaster, but I wasn't particularly impressed with it.
Again, some more work required to this patch to sort it out.
What projects are you making progress with?