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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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plastering plasterboard
Plasterboard has two sides, usually an ivory side and a matt paper
side (i think). Supposed to wallpaper onto ivory side and plaster onto matt paper side. My ceiling boards are foil backed, and have been installed already with foil side in the loft, but the ceiling side is ivory, and I want to plaster them. Will it be ok to plaster onto ivory side on a ceiling? Other problem is that when installing I butted them too close and there is no gap between them. Will it be ok or do I have to use a router and cut a 3mm gap from all the joints? Thanks |
#2
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plastering plasterboard
On 17 Sep, 13:19, freepo wrote:
Plasterboard has two sides, usually an ivory side and a matt paper side (i think). Supposed to wallpaper onto ivory side and plaster onto matt paper side. My ceiling boards are foil backed, and have been installed already with foil side in the loft, but the ceiling side is ivory, *and I want to plaster them. Will it be ok to plaster onto ivory side on a ceiling? Other problem is that when installing I butted them too close and there is no gap between them. *Will it be ok or do I have to use a router and cut a 3mm gap from all the joints? Thanks I had the same 2 issues - and the plasterer had no problem making a good job. I think a coat of PVA on the ivory side will make it suitable for plastering. Mark. |
#3
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plastering plasterboard
On 17 Sep, 13:22, wrote:
On 17 Sep, 13:19, freepo wrote: Plasterboard has two sides, usually an ivory side and a matt paper side (i think). Supposed to wallpaper onto ivory side and plaster onto matt paper side. My ceiling boards are foil backed, and have been installed already with foil side in the loft, but the ceiling side is ivory, and I want to plaster them. Will it be ok to plaster onto ivory side on a ceiling? Other problem is that when installing I butted them too close and there is no gap between them. Will it be ok or do I have to use a router and cut a 3mm gap from all the joints? Thanks I had the same 2 issues - and the plasterer had no problem making a good job. I think a coat of PVA on the ivory side will make it suitable for plastering. Mark. This has been dealt with many times. *These days*, the ivory side is used for all purposes. The other side has a glued flap of paper on it, and this flap can become unstuck if plastered over. Also, reportedly some plasterers like a gap between the boards to help bond them together. However, every time I have boarded for a plasterer to skim, I have butted them up and me or the plasterer has stuck the scrim tape over the joints. None of them said anything about expecting gaps ! Simon. |
#4
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plastering plasterboard
On Sep 17, 1:55 pm, sm_jamieson wrote:
On 17 Sep, 13:22, wrote: On 17 Sep, 13:19, freepo wrote: Plasterboard has two sides, usually an ivory side and a matt paper side (i think). Supposed to wallpaper onto ivory side and plaster onto matt paper side. My ceiling boards are foil backed, and have been installed already with foil side in the loft, but the ceiling side is ivory, and I want to plaster them. Will it be ok to plaster onto ivory side on a ceiling? Other problem is that when installing I butted them too close and there is no gap between them. Will it be ok or do I have to use a router and cut a 3mm gap from all the joints? Thanks I had the same 2 issues - and the plasterer had no problem making a good job. I think a coat of PVA on the ivory side will make it suitable for plastering. Mark. This has been dealt with many times. *These days*, the ivory side is used for all purposes. The other side has a glued flap of paper on it, and this flap can become unstuck if plastered over. Also, reportedly some plasterers like a gap between the boards to help bond them together. However, every time I have boarded for a plasterer to skim, I have butted them up and me or the plasterer has stuck the scrim tape over the joints. None of them said anything about expecting gaps ! Simon. Cool nothing to worry about then. Thanks everyone. |
#5
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plastering plasterboard
In article
, freepo wrote: Plasterboard has two sides, usually an ivory side and a matt paper side (i think). Supposed to wallpaper onto ivory side and plaster onto matt paper side. Not anymore. It now says white side out - on the grey side. ;-) -- *Yes, I am an agent of Satan, but my duties are largely ceremonial Dave Plowman London SW To e-mail, change noise into sound. |
#6
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plastering plasterboard
freepo wrote:
Other problem is that when installing I butted them too close and there is no gap between them. Will it be ok or do I have to use a router and cut a 3mm gap from all the joints? Well not long ago I boarded out several walls and ceilings with the aformentioned gap between the boards, and got ticked off when the plasterer arrived and told me he prefers the boards tight together. So go figure... David |
#7
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plastering plasterboard
The message
from Lobster contains these words: Other problem is that when installing I butted them too close and there is no gap between them. Will it be ok or do I have to use a router and cut a 3mm gap from all the joints? Well not long ago I boarded out several walls and ceilings with the aformentioned gap between the boards, and got ticked off when the plasterer arrived and told me he prefers the boards tight together. I am no expect on plastering but ISTM that if you plasterboard a ceiling without noggings at the board ends (not that I would) then a gap there for plaster to be forced through will do a better job than a tight joint and scrim tape. After all lath and plaster is just very short boards and a multitude of gaps. -- Roger Chapman |
#8
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plastering plasterboard
In article ,
Roger wrote: I am no expect on plastering but ISTM that if you plasterboard a ceiling without noggings at the board ends (not that I would) then a gap there for plaster to be forced through will do a better job than a tight joint and scrim tape. After all lath and plaster is just very short boards and a multitude of gaps. Trouble is that finish coat is extremely hard and inflexible - as well as being very thin. Plasterboard is made of softer plaster - so any flexing gives obvious results at joins. Lath and plaster is different - the plaster used there is lime and very flexible. At least when new. -- *Sherlock Holmes never said "Elementary, my dear Watson" * Dave Plowman London SW To e-mail, change noise into sound. |
#9
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plastering plasterboard
In article ,
"Dave Plowman (News)" writes: In article , Roger wrote: I am no expect on plastering but ISTM that if you plasterboard a ceiling without noggings at the board ends (not that I would) then a gap there for plaster to be forced through will do a better job than a tight joint and scrim tape. After all lath and plaster is just very short boards and a multitude of gaps. Correct, but you still use the scrim tape too, after you've forced the plaster through the gap. Trouble is that finish coat is extremely hard and inflexible - as well as being very thin. Plasterboard is made of softer plaster - so any flexing gives obvious results at joins. Lath and plaster is different - the plaster used there is lime and very flexible. At least when new. You should really be forcing bonding coat through the gaps. Finish coat doesn't have much of a sticking/glueing property, and it shrinks enormously as it sets, so a 1/4" wad in a gap would definately crack along the gap. Of course, it's annoying mixing up a small quantity of bonding coat just for this, but if you're using it elsewhere, then you can just slap it in when you have it mixed up for other purposes. -- Andrew Gabriel [email address is not usable -- followup in the newsgroup] |
#10
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plastering plasterboard
"freepo" wrote in message ... Plasterboard has two sides, usually an ivory side and a matt paper side (i think). Supposed to wallpaper onto ivory side and plaster onto matt paper side. My ceiling boards are foil backed, and have been installed already with foil side in the loft, but the ceiling side is ivory, and I want to plaster them. Will it be ok to plaster onto ivory side on a ceiling? Other problem is that when installing I butted them too close and there is no gap between them. Will it be ok or do I have to use a router and cut a 3mm gap from all the joints? Thanks Might be a bit late? but fill the gaps with acrylic sealant and wipe off excess,much better than scrim tape. |
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