Fireline Plasterboard – Over Boarding a Ceiling
I often overboard lath and plaster ceilings this is because the customer does not want to pay for the time it takes to pull down and old ceiling and clear it up. 
Due to lath and plaster ceilings normally being full of rubbish and the dust created is unbearable I normally recommend the overboard option.
So With an overboard if the ceiling is lath and plaster I would use 9.5mm plasterboard this would allow for the just not being level as the plasterboard will "go with" the joists. It is also easier to lift 9.5mm board above your head for tacking. So the first ting I normally do I find the joist the best way is to smash a hole in the ceiling with a hammer and have a look, once you have found a joist they are normally 401mm or 601mm apart.
I go round and mark on the wall where all the centres of the joists are then I get a chalk line and run it form one side of the ceiling to the other this will accurately mark the ceiling with the joist centres. This does take a fair bot of time but saves an age of time in the long run. With all the joist marked measuring and cutting the plasterboard is easy as ll you do is measure to the lines and cut. Most rooms are not square so you will find that you will need to do some awkward cuts but that’s is just the way it goes. 
The tools I use are two props or dead-men which can be bought very cheaply drywall screws a cordless drill for screwing the screws. A chalk line along with a tape measure and stanley knife. Remember that all the screws need to be flush with the board otherwise when the ceiling gets plastered they will catch their trowel and it will leave the screw proud. Author: Verdon Hackett Verdon Hackett is the proud owner of http://www.plasterersforum.com The Plasterers Forum was started in 2006 and has grown from strength to strength its a very busy community giving out some of the best information on plastering. The plasterers Forum is a leading authority in the plastering industry. Article Source: http://EzineArticles.com/?expert=Verdon_Hackett Dry lining is it necessary to put up a timber frame when boarding out a wall with plasterboard or is dot and dabbing strong enough to hold small ceramic tiles? Dry lining with loose minerals Am I just doing this wrong?! Any time I try to apply my liner shadows dry, I end up with a giant mess under my eyes, even when I am just trying to. Exterior solid wall partially rendered; implications for dry … I’d like to dry-line the interior faces of the exterior walls with 70mm of rigid foam insulation laminated to plasterboard (the target is to achieve EST’s Best Practice guideline U-valu. Dry lining in Worcs, West Mids,B ham So, if you are considering drylining give us a call on 01908 516366 for some free impartial advice on whether it is the right thing to do for your home.
