How flat does a ceiling have to be?

[DIYedboy]

I 've just ripped down a lath n plaster ceiling and now I'm *arting about adding slivvers of timber to try n get the joists somewhere near flat to each other before I screw up the plasterboard. I'm well sick of the performance! My home ain't the Cistine Chapel but I'd like the end result to look flat. How much can I allow the ceiling to run up n down before the eye can see the bed of the ceiling going up n down?

 

[noseall]

I 've just ripped down a lath n plaster ceiling and now I'm *arting about adding slivvers of timber to try n get the joists somewhere near flat to each other before I screw up the plasterboard. I'm well sick of the performance! My home ain't the Cistine Chapel but I'd like the end result to look flat. How much can I allow the ceiling to run up n down before the eye can see the bed of the ceiling going up n down?

You must spend a lot of time lying on your back!

 

[DIYedboy]

As you know, an Englishman's home is his chapel Nosall, now how much deflection can I get away with?

 

[1john]

Just do it now you have started, you will only get pee'd off looking at the area you didn't straighten and you will look at it because you know it's there, it may not be the Cisteen chapel, but it's your own palace, make it the best you can, it is only costing you time and you will be glad of it in the long run, i can assure you

 

[Micilin]

Otherwise it will end up like the Cistern Chapel.

 

[DIYedboy]

What a shame flat ceiligs are in, bring back Artex, think what Michangelo could have done with it!

 

[caffreys]

maybe frowned upon, but i generally leave the lathes in place and just remove the plaster, then i use 9mm handiboard - it's in my opinion easier to work with when the ceiling is uneven and your working on your own.
I had a similar ceiling in my house it was a nightmare - .5" difference in places

 

[Nige F]

What a shame flat ceiligs are in, bring back Artex, think what Michangelo could have done with it!

He could have made " David" a Bigger Boy

 

[brett1976]

ripped a few down myself in my house and ate about a 3rd of it in the process., sometimes depending on the size of the ceiling bath/box room etc its easier to put a false ceiling in using some 2"b 2" board and skim

 

[keyplayer]

If you have the height to play with it's a lot easier to batten over the joists with some 2 x 1. You can then just pack these out as you're fixing them to bring them all level with the ceiling's low point. As you have removed a lathe and plaster ceiling you should have the room to do this. Much better than faffing around cutting wedges of timber.