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first coat of paint

  • 21-10-2010 8:51pm
    #1
    mendel
    Closed Accounts Posts: 100 ✭✭


    Folks,

    Looking for advice/opinions on this

    Q. Should the heating be turned on in a new build before any painting is done?

    We were planning on giving the plaster a week to dry and then starting to apply first coats to ceilings and walls, but it has been suggested that this is not a good idea that the paint may not take?

    Any advice appreciated


Comments

  • #2
    michael999999
    Banned (with Prison Access) Posts: 7,771 ✭✭✭michael999999


    turn your heating on and leave the walls for at least a week to dry out.
    having the heating on will not make any difference to the paint.


  • #3
    YourAverageJoe
    Closed Accounts Posts: 136 ✭✭YourAverageJoe


    i would have thought a week is not very long for the plaster to dry fully?


  • #4
    JuniorB
    Registered Users, Registered Users 2 Posts: 379 ✭✭JuniorB


    Put in a few industrial de-humidifiers as well to speed up the process. I'd say with heat on you'll need 7-10 days minimum to let the walls dry out.. so they'll 'take' the paint. We had one wall in kitchen that would not hold it no matter how many times it was re-sprayed. Will be hidden by units anyway so didn't really mind.


  • #5
    dathai60
    Registered Users, Registered Users 2 Posts: 43 ✭dathai60


    Is the house trimmed out yet ie doors skirtings etc!! if not put the heat on low and give the walls as much time to dry as needed when dry use a matt emulsion thinned with about 10% water added then give a day or 2 to dry and finish with matt emulsion as it allows the walls to breathe .If the trim is on dont dry too quick as they will twist and split and do not use a de-humidefier unless your really stuck for time. Also if its a good day open all the windows works better then any heat.


  • #6
    RKQ
    Registered Users, Registered Users 2 Posts: 2,292 ✭✭✭RKQ


    +95% with dathai60 above, good advice but I'll tend to water down first coat by 40 to 50%.

    Leave your plaster to dry naturally for as long as possible - IMO the longer the better.
    10 days would seem to be absolute minimum but 10 weeks would be a lot better, especially in a dormer.


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  • #7
    michael999999
    Banned (with Prison Access) Posts: 7,771 ✭✭✭michael999999


    YourAverageJoe wrote: »
    i would have thought a week is not very long for the plaster to dry fully?
    i did say at least a week!!


  • #8
    mrgaa1
    Closed Accounts Posts: 759 ✭✭✭mrgaa1


    and put the heat on low - about 15 or so. You will find that your first coat will be absorbed into the wall. Some painters mix water into the paint - which will be absorbed quicker.


  • #9
    muffler
    Registered Users, Registered Users 2 Posts: 46,544 ✭✭✭✭muffler


    JuniorB wrote: »
    Put in a few industrial de-humidifiers as well to speed up the process.
    I wouldn't recommend this at all because of the risk of cracking of the plasterwork and possible damage to the architrave and skirtings.

    Running your heating system at a low setting and leaving the windows partially open every day for at least 10 - 14 days will result in a substantial amount of drying out.

    As stated by others you should dilute the emulsion with about 10 - 15% water and wait for about 3 days before applying a second coat. You can of course buy a sealer to apply first which will prevent "napping" but be warned it doesnt come cheap.

    An old trick that works (it did in my house) is to apply wallpaper paste first before applying the emulsion. It acts as a sealer and prevents uneven absorption of the paint.


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