Putting up coving in a room with a sloping ceiling

[ehrycan]

Hello,

I'm currently doing up a bedroom and installing some coving all around the room.

Two thirds of the room are done but the problem I have encountered is that the ceiling at far end of the room on slopes downwards so that the ceiling at one side is lower than the other.

I'm having real difficulty in installing the coving at the point where the ceiling starts to slope as it's not at an obtuse angle but it curves downwards and I'm not sure how to cut the coving correctly without miscalculating.

Has anyone ever had this problem and how did you get round it? Is there maybe a proper tool for this job or a technique that I need to be using?

Thanks in advance.

[turboped]

Forgive me if this makes little sense but it sounds okay in my head.

If you measure away from the point that the ceiling starts to slope (call this point A) the same distance in both directions and mark the wall, call this distance X. then use a large compass or make shift compass (Nail piece of string and pencil) extend the compass to say double X put the point of the compass on the marks and strike an arc on the wall do the same from the other side and the arcs should cross (call this point B). Draw a bold line from A to B. This is the angle of the cut of both pieces of coving. I'm trying to think of the easiest way to transfer this angle to the 'cut'.

[Golden Shred]

It's quite a common problem. For the length of the problem run, at about 1" centres or whatever is appropriate cut through the cornice for about seven eighth's of it's depth. The purpose is to open it up like a fan to follow the curve of the ceiling. The cuts can be either from the top of the cornice or the bottom, or a mix to suit circumstances. Then mix up some plaster or use polyfilla to fill up the gaps and to make the cornice "flow" with the ceiling. It is called "surfing" where iI come from, and the cuts are called "surf cuts". It is a technique also often used in joinery.