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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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Ceiling cracks: using grout?
1970s house. Artexed ceilings. Hairline cracks have developed on the
ceilings, where the plasterboard panels meet. Polyfilla and others sell "No More Cracks" filler or similar for this problem. Question: Would it be OK to use tile grout to fill the cracks? AFAIK grout is basically a thin cement mixture with some flexibility. Or should I just leave the cracks -- they'll open up again if I fill 'em! Bruce |
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Chris Bacon wrote:
Squirt in some 3:1 PVA, don't rake out the cracks first. Use a squeezy botle with a short length (2") of 15mm pipe lagging tied tightly around the bottle top. Cut off the foam lagging at 90 degrees with a sharp knife. Press the cut off end against the crack, squeeze until PVA has gone in, stop when drips appear at each side of lagging where it presses against the crack/ceiling. Repeat, following the crack along. Sponge off x/s with a damp sponge. Wear a hat or something. Protect floor and furnishings. Allow to dry, repeat optional, fill with polyfiller. Or just fill with some flexible decorator's filler... -- Grunff |
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Grunff wrote:
Chris Bacon wrote: Squirt in some 3:1 PVA, don't rake out the cracks first. Or just fill with some flexible decorator's filler... Ahbut, sticking it together does a far better job, if the crack is "fine", say 1/2 mm, caulk won't take up the movement. The PVA treatment is also excellent for plaster & lathe ceilings, as it glues up any sandy stuff which would otherwise fall from above, bulging any paper and displacing filler... try it! |
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s--p--o--n--i--x wrote:
Bath sealant should do the trick I would have thought. No, it won't. It will be very visible (shiny), and is not overpaintable. -- Grunff |
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Chris Bacon wrote:
Ahbut, sticking it together does a far better job, if the crack is "fine", say 1/2 mm, caulk won't take up the movement. The PVA treatment is also excellent for plaster & lathe ceilings, as it glues up any sandy stuff which would otherwise fall from above, bulging any paper and displacing filler... try it! While I'm a *big* fan of PVA, I've used flexible filler on all the fine cracks we had in our plaster, with very good results. Much quicker and easier IMHO. -- Grunff |
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Grunff wrote:
While I'm a *big* fan of PVA, I've used flexible filler on all the fine cracks we had in our plaster, with very good results. Much quicker and easier IMHO. I'd just waft a filling knife, float, or whatever over, with some ordinary filler, over plaster - however, the OP said "Hairline cracks have developed on the ceilings, where the plasterboard panels meet.". The benefit of squirting in PVA is that it sticks the lot together, not just the edges of the PB - it glues PB to joist, too, which re-inforces the joint considerably. I've used it doing odd jobs in lets, and on P&L ceilings - it really is much better than just filling the cracks, which otherwise just open up again in big oblong patterns in no time. A problem with flexible filler is that it can "shine through" a couple of coats of emulsion. You can't really sand the stuff to feather it, either. However, I use quite a bit of it - the Ceramide stuff is good. |
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On Tue, 15 Mar 2005 14:28:23 +0000, Grunff wrote:
s--p--o--n--i--x wrote: Bath sealant should do the trick I would have thought. No, it won't. It will be very visible (shiny), and is not overpaintable. The non-silicone stuff should be overpaintable. |
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I'd just waft a filling knife, float, or whatever over, with some
ordinary filler, over plaster - however, the OP said "Hairline cracks have developed on the ceilings, where the plasterboard panels meet.". The benefit of squirting in PVA is that it sticks the lot together, not just the edges of the PB - it glues PB to joist, too, which re-inforces the joint considerably. I've used it doing odd jobs in lets, and on P&L ceilings - it really is much better than just filling the cracks, which otherwise just open up again in big oblong patterns in no time. A problem with flexible filler is that it can "shine through" a couple of coats of emulsion. You can't really sand the stuff to feather it, either. However, I use quite a bit of it - the Ceramide stuff is good. How about if I used some artex patch filler? http://www.artex-rawlplug.co.uk/artex-360 It would match the existing ceiling artex OK. But would the crack just open up again in time? Bruce |
#11
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"s--p--o--n--i--x" wrote in message ... On Tue, 15 Mar 2005 14:28:23 +0000, Grunff wrote: s--p--o--n--i--x wrote: Bath sealant should do the trick I would have thought. No, it won't. It will be very visible (shiny), and is not overpaintable. The non-silicone stuff should be overpaintable. As to the original question, IME grout is very inflexible. |
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