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Filling in chase and sockets

Discussion in 'Plastering and Rendering' started by Bahco, 17 Jul 2009.

  1. Bahco

    Bahco

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    Further to my electrics post I am moving sockets around and will need to fill in the chasing and knockout boxes for sockets.

    What should I use? Is cement mortar better to fill the void where the socket used to be or should I use multi finish?

    Thanks :D
     
  2. Richard C

    Richard C

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    Muilti isn’t suitable; are you going to re-skim the whole wall or just blending in?
     
  3. Bahco

    Bahco

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    Hi

    I am just blending in.
     
  4. Richard C

    Richard C

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    Fill out to 1-2mm below the surrounding wall surface with either render or Bonding plaster; PVA it first. If you’re just blending in, Multi can be tricky to get an invisible join so I would advise you just use a decent powder filler you can sand down after; Easyfill will do it but there is always the risk you will see the join & it may crack along the join without reinforcement.
     
  5. trowelmonkey1

    trowelmonkey1

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    as Richard will probably tell you, or would have told you ;)

    fill the chase with bonding, let it set to the point of being like cheese then cut it back with the trowel to give you 2-3mm for multi finish over the top and plastr it flush.

    I'm sure Rich C will add to it and fill in any gaps i may have left, uh hum! pardon the punn! :D
     
  6. trowelmonkey1

    trowelmonkey1

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    oh Rich, you beat me to it AND a better description too, nice to know you're a fan of easifill also!
     
  7. Richard C

    Richard C

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    Very rarely have occasion to use it but “horses for courses”. I wouldn’t fill deep holes with it but, like any decent powder filler, it’s ideal as a thin coat, sandable blend in. You can’t really sand Multi & get a good finish &, due to the grit size, it’s not that easy for someone inexperienced to blend it in & not see the join.
     
  8. Bahco

    Bahco

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    Thanks for replys.

    I have bought a bag of multi finish so can I use it instead of bonding and then use filler for the finish coat?

    Thanks :D
     
  9. dextrous

    dextrous

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    As much as I'd love to chip in here, I think it'd hack Richard off ;) - he know to what I'm referring. Sorry Richard :oops:
     
  10. Richard C

    Richard C

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    Not at all mate, it’s an open Forum & had nothing to do with you. Maybe I’ve over reacted but I just got a bit ****ed off after putting in the effort over the last couple of days (along with yourself of course) &, for some reason, I missed the start of the OP's new thread yesterday :rolleyes: . It’s moved on so far now I couldn’t see any point in butting in; you’re doing a perfectly good job of it anyway! ;) Oh & don't forget to tell him he needs Building Regs. for that window & probably the rest of it!

    As I said, multi isn’t suitable; it’s a thin coat finishing plaster suitable up to around 5mm max & if you try to pack the boxes & chasses out much deeper with it, it’ll craze & crack up to resemble a dried out river bed & will in all probability fall out! You need a bag of redimix lime render or Bonding plaster which you can use to fill out in one hit; then use a decent filler on the surface to blend in.
     
  11. dextrous

    dextrous

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    I did mention it at the start, but it's a refurb and he didn't seem too keen on it. But I will remind him, especially regarding the window and any proposed new electrics.
    Right, that's enough of hijacking this thread

    I was going to say, that since he has to go and get some filler anyway, he could return the multi at the same time and get bonding. ;)
     
  12. Bahco

    Bahco

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    Ok back to wickes it is to return the multi.

    I've seen this Easyfill at £13 a bag but will waste most of it. What other fillers do you guys use for small jobs?
     
  13. Nige F

    Nige F

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    Tetrion or Toupret ;)
     
  14. JohnD

    JohnD

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    as a not-a-plasterer, I find that for a biggish hole such as an old socket, it is easier to fill with sand and cement. It has a long working time without going off like plaster does, and is cheap, and, provided you get all the loose dust out of the hole and moisten it so it does not suck the mortar dry, and it stays damp long enough to harden, it bonds well to the wall and is strong. It does not suffer cracks like a large plaster fill can. Obviously you have to fill it slightly below the surface so you can use a finish plaster to smooth it off once set.

    You can press or scrape it, or take the surface back with a paint brush before it has set, if you have overfilled it a bit.

    As it is strong once set, you can plug and screw things into it. Plaster is not strong enough for anything heavy.
     
  15. Richard C

    Richard C

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    Had another look at the thread this morning & it may be even worse; replacement windows is one thing but cutting new ones is definately notifyable & I can’t actually see any evidence that a lintel has been fitted in there. :eek:

    Sorry again Bachco for hijack, last time I promise. :rolleyes:
     
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