I have to repair a patch of plaster on the ceiling on a corner of the room, about 1.5 metres square. The surface is paint on plaster on concrete. My questions are:
1) Is masking tape on the walls close to the edge with the ceiling a good idea for gauging the depth of the plaster and helping with getting a clean line?
2) Should I rub down the paint on the surrounding sound plaster? If I did this it would give a better key for any overlap, but then again perhaps I shouldn’t encourage this and any surplus plaster will be less easy to wipe off.
2007-07-13 07:38:39 · 10 answers · asked by Rickyboy 2 in Home & Garden ➔ Maintenance & Repairs
2 quick answers 1)get in pro.2) get in pro.
2007-07-13 17:59:58 · answer #1 · answered by STEW POT 47 2 · 0⤊ 0⤋
you don't give the depth of plaster you have to fill ...if it 5mm or more deep then you will have to do it in two coat work .IF the base is concrete and its painted .then you will need to chip it to get a key ..i would then pva it and while it was still tacky i would apply a coat of bonding ...not browning ..going over it with a straight edge ..and leaving only 3 to 5mm deep for the skim coat ..which could be applied about 4 hours later ..do not apply too much water on the skim coat or you will make it bubbly .but you can apply plenty of water around the edges of where you are working to kill the suction ..with the straight edge you will easily get a good ceiling line the whole idea of the exercise is to have no overlap ..just two surfaces butting together and flush ..anything else will show forever
2007-07-13 07:52:38 · answer #2 · answered by boy boy 7 · 1⤊ 0⤋
What you'll do is build up the plaster higher than the surrounding area and overlap it onto the existing plaster. Then after it's dry you sand it down to where the surface is level. You don't just fill in the spot to the edges of the "hole". Then you paint over it to match the rest of the ceiling. Not sure what you mean with question 1, sorry. Also not sure about sanding off the paint in the beginning of question 2.
2007-07-13 07:46:36 · answer #3 · answered by CNJRTOM 5 · 0⤊ 2⤋
Right....its a size that you would be better off paying someone proper to do it ...just not worth the hassle.....by the time you buy all the stuff ...(and they don,t usually sell bits of this and bits of that at the DIY place),
So...you have to make a good square to place back the missing plasterboard(on a concrete ceiling?) Cut existing ceiling to a pencil marked square using a sharp stanley knife...you might have to score it a few times!! Good clean area......then unibond it.
By some adhesive powder(dot and dab)...from a builders merchant ...along with your 3/8 th plasterboard.....mix the adhesive powder with water and beat to a thick semi dry stodge and brush in the area.....that is AFTER you have uni-bond the ceiling first. UNIBOND is a white liquid that you mix with a little water. Then stick plasterboard(back of board against ceiling) .....to the concrete ceiling.....and leave to set....then unibond the plasterboard too... then you skim using the right tools(plasterers trowel)......plaster in....make sure you have the back.. (grey )bit of the plasterboard against the ceiling....leave to dry.......sandpaper and wash around edges.......................paint your patch twice...and then the whole ceiling once with good emulsion.
Pay someone to do it properly....
2007-07-13 08:15:02 · answer #4 · answered by cheeky chappie 3 · 0⤊ 0⤋
You should use p.v.a sealer first to provide a key for the finish plaster to adhere to...You can feather the patch into the existing plaster as its not to big an area...
2007-07-13 07:43:53 · answer #5 · answered by Anonymous · 0⤊ 0⤋
I suggest you practise on a wall first, plastering is not as difficult as some would have you believe but it is a skill that needs to be learnt. If this is your first attempt you will end up with mess everywhere and you will spend hours sanding it flat afterwards. I know - I remember my first efforts.
Build up your skill gradually and enjoy it.
2007-07-14 10:14:53 · answer #6 · answered by Anonymous · 0⤊ 1⤋
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2016-10-01 13:07:57 · answer #7 · answered by centner 4 · 0⤊ 0⤋
no 1) no
no 2) ... no wiping off ..!!!! .......key the background as you wish , coat with a dilution of PVA and water but "feather the plaster finish into the existing ..???? (get someone in ..who knows what they are doing ..""")
2007-07-13 07:47:26 · answer #8 · answered by G Mmmmm 3 · 0⤊ 0⤋
Don't even attempt it. Pay a professional, you'll never do it as you want it. Avoid the heartache!
2007-07-15 02:22:27 · answer #9 · answered by davy t 2 · 1⤊ 0⤋
http://www.doityourself.com/stry/repairhomeplaster
They have a lot of good tips that should answer all your questions.
2007-07-13 07:43:50 · answer #10 · answered by Witchblade_1 2 · 0⤊ 0⤋