JustStartingOut

I'm painting the final coats on plastered walls and ceilling and having difficulty getting straight lines. What type of brush should I use and are there any tools recommended to get a clean finish between wall and ceilling. I have tried masking tape but as the ceilling is slopping at 40 degrees they are not perfectly straight between wall and ceilling.

We are a long way through our build and I have had a general builder do most of the work, can't complain about the quality but just looking at what Building Control Need, I see that pressure testing of drainage and from what I understand the whole waste system. I know the builder hasn't done any testing and never mentioned any was needed, I think this is the first new build he has worked on. We have all the plumbing in, how will we be able to get any tests done. The connection on our property off to the main sewer is around 8 foot deep and the chamber is classed as a 'non-person access' chamber? We have another small chamber as there are two pipes from the property going into a single pipe running to the main chamber and is where the pipes change direction. Once in the property all pipes are now covered by plasterboard and the soil pipes vent out to tiile vents on the roof. What tests will the inspector expect to see or have documented? How can the internal pipes be tested as there is no way to block off the venting out through the roof Am i going to have major problems or are there any simple solutions or am I misunderstanding the tests.

We have a half finished roof, roofer decided he couldn't work with the slates. All battening etc completed and the Slates are lifted up to the roof, so nw looking to find someone to finish off the roof. It is natural slate covering an area of 100 square metres and have 2500 slates. Any idea what it should cost for someone to complete, there is about 6 metres of lead work and 6 velux windows to work around, other than that straight forward slating.