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Spray paint over old paint

Discussion in 'Decorating and Painting' started by burts, 17 May 2020.

  1. burts

    burts

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    As in other posts, had a mare with ceiling drying funny with small holes everywhere.

    I’m going to buy a sprayer as an investment as I like the idea of a perfect finish.

    Question- 1 - will a sprayer fill the existing holes and imperfections or will I need to mass fill smooth
    2 - if sprayed over an existing rolled wall, with it leave smooth or still show existing rolled surface through

    Thanks
     
  2. JohnD

    JohnD

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    Was it a kitchen?
     
  3. burts

    burts

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    No, it was a rear extension, with a warm deck flat roof. Open room as no bifolds fitted yet. Never happened to the wall
     
  4. opps

    opps

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    Spraying full fat emulsion requires a decent airless sprayer. Preferably with a lance for the ceiling. That will set you back hundreds.

    A1. I wouldn't expect it to fill the pin holes. If anything it might make it worse.

    A2. I can see why you might think that but given how thick the paint is applied, you would need a silly amount of coats.

    Properly allied airless on new plaster does give you a flatter finish on new plaster but properly rolled paint should give you a flat finish (not as flat but flat nevertheless).

    For years I have toyed with the idea of dropping over a grand on an airless sprayer but I am not sure that it will be any faster than rolling when you factor in the time spent masking and sheeting, and clearing the pipes. I may spend £500+ on a handheld Graco though the next time I have lots of doors to paint in a new build though.
     
  5. burts

    burts

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    I was only going to get one of the Wagner flexi ones for a couple hundred ? I’m guessing they may be rubbish then?

    I don’t want something that was new, left with all these imperfections so I’m facing the fact that I either need to get a power sander on it or skim fill with easifill.

    I can only assume that the first ever coats I did dried to quick in the sun or soaked in to the plaster/ board and caused these little holes and all the further coats I was trying to polish a turd. Highly annoying. 36sqm ceiling.

    Now to decide what’s quicker, sand or fill
     
  6. opps

    opps

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    I haven't used the Flexio. It is a HVLP rather than airless.

    The reviews on amazon for the 590 are mostly positive but the ones on the Wagner site are pretty shocking.

    https://www.wagnerspraytech.com/products/paint-sprayers/flexio-590-paint-sprayer/

    https://www.amazon.co.uk/Wagner-Uni...01BUDJ6TG/ref=cm_cr_arp_d_product_top?ie=UTF8

    I have an old Fuji HVLP, it is only a 3 stage turbine, it is definitely no good for emulsion. The cost when new was about £500. The Wagner might be OK but even if it is you will be reloading the cup frequently and you will probably need to strain the paint first. Perhaps I am being unfair but at £100 to £200, I wouldn't expect it to be that good
     
  7. JohnD

    JohnD

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    amazon is notorious for fake reviews.
     
  8. burts

    burts

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    Agreed, it looked pretty handy in the demonstrations but you never know
     
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  10. burts

    burts

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    I agree, but sometimes something are surprisingly handy.
    I won’t be fussed if I can get rid of whatever has happened here and get a normal roll on it.
     
  11. Johnny Allround

    Johnny Allround

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    Preparation, preparation, preparation. You can buy the best roller or the best spray system in the world it still won’t look good if your surface area isn’t good. Lipstick on a pig scenario.
     
  12. opps

    opps

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    I get what you are saying... I am however mindful of those cable TV infomercials for paint pads...
     
  13. burts

    burts

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    Ok John, so if you can explain what went wrong with the prep and why I have the situation I have on the ceiling and none id the walls, as I don’t recall you commenting on the original posts.

    So... the room was boarded and skimmed. 50/50 mist coat on walls and ceiling. Walls dried ok, possibly need another coat. Ceiling has dried with areas of dimples and tiny holes ?

    What do you suggest has happened or I did wrong?

    Thanks
     
  14. burts

    burts

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    It was actually Craig of the original big brother
    So it must be good
     
  15. opps

    opps

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    Yeah, and the Tommy Walsh tools and materials were eventually sold in Poundland (honestly, that is true).
     
  16. burts

    burts

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    I can believe it, I see his plastic bricklaying mortar bed guide. So many inventions that would be laughed out of trades.
     
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