Sorry, a few more questions regarding my decorating! I'm going to get some polystyrene coving to put up today. I have a few queries about putting it up:-
1) When they say 100mm coving, is that how far it extends down the wall and across the ceiling (100 mm down and 100 mm across), or, does it mean that 50 mm will extend down the wall and the other 50 mm across the ceiling (so the two lengths add up to 100 mm)?
2) I currently have 4 metal brackets up holding a curtain pole - the standard type of bracket, where the bit that fixes to the wall is around 1.5" in depth with two screw holes. The problem that I have is that if I put up the 100 mm coving (if it does extend down and across by 100 mm each way), the current holes that are drilled will be covered by the coving. I've looked at some narrower coving 700 mm but that too would cover the holes. The holes cannot be drilled any lower as they will be too close to the top of the window frame - there is also lintel that has to be drilled into. I'm just wondering how to get around this - if I put the coving up, would it be possible to cut through it where the holes are in the wall and then insert the brackets and screw them into place, or would I somehow have to cove around the metal brackets (the piece that extends outwards that holds the pole should not be a problem as it will be about 3.5" away from the wall).
3) Finally, I'm looking at buying a coving mitre box to do this, however, the boxes that I'm looking at state that they are only suitable for coving from 100 mm. If I buy the narrower coving (700 mm), would it be impossible to use this mitre box, and if so, how would I get around cutting it to shape (I have never done any coving before) - would I actually need the right saw to cut polystyrene coving or could I get away using some kind of sharp knife?
Any suggestions will be appreciated. Thank you.