Thanks Thanks:  0
Likes Likes:  0
Needs Pictures Needs Pictures:  0
Picture(s) thanks Picture(s) thanks:  0
Results 1 to 5 of 5
  1. #1
    Join Date
    Jul 2004
    Location
    perth
    Age
    80
    Posts
    20

    Default Painting over putty.

    When renovating old sash windows and putting putty on the outside is all cool except that the polyurethane paint lifts from the puttied areas over time.

    I assume that this is due to the putty not being dry and still having linseed oil so the paint lifts, never bonds to the putty. Should I wait till the putty dries before i paint? If so how long? Or maybe there is a "trick" someone can pass on .

    Thanks in frustration

  2. # ADS
    Google Adsense Advertisement
    Join Date
    Always
    Location
    Advertising world
    Age
    2010
    Posts
    Many





     
  3. #2
    Join Date
    Feb 2006
    Location
    Lindfield N.S.W.
    Age
    62
    Posts
    5,643

    Default

    Because of the oil in putty, I always use an oil-based paint. This seems to work for me!
    Cheers

    Jeremy
    If it were done when 'tis done, then 'twere well it were done quickly

  4. #3
    Join Date
    Aug 2006
    Location
    Kotara
    Age
    76
    Posts
    196

    Default

    I have always been of the understanding that you should allow putty to set/dry for around three months before applying any painted finish. After that time I don't think that the type of paint matters.

    But how many have noticed the warning on the cans of water based paints that the paint should not be used on windows because they can stick and not slide up and down.

    Know of a chap who learnt the hard way, hurt his back straining to open a stuck window.
    John H
    Why do I never seem to cut "too long"?

  5. #4
    Join Date
    Feb 2003
    Location
    Garvoc VIC AUSTRALIA
    Posts
    11,464

    Default

    is the poly exterior grade?
    Regards, Bob Thomas

    www.wombatsawmill.com

  6. #5
    Join Date
    Aug 2005
    Location
    kiama
    Posts
    626

    Default

    normal glazing putty is a mixture of mainly linseed oil and whiting powder plus other ingredients.

    Its meant to stay firm and not rock hard for years so it can flex and move with the timber therefore keeping a seal and adhesion.

    Eventually it does dry out but depending on the climate exposure to sunlight and heat it could be years.

    The answer is as jmx89 says use oil based enamel it's from the same family. the linseed oil is thinned with turps as is the paint and the oil is a linseed oil or synthetic oil so the paint has no problem sticking.

    All other paints are being painted onto a oily surface so no or little adhesion for them.

    The putty should be treated the same as wood pink primer/undercoat and the enamel colour for best results. Normally the putty only requires a few days to set before painting, if you buy premixed putty the manufacturer will advice on proceedure. If you mix it yourself make sure you have the correct information as to how to mix it, not something most people would do at this time.

Similar Threads

  1. Painting over Bathroom Wall Tiles
    By MikeC in forum PAINTING
    Replies: 8
    Last Post: 5th October 2006, 05:27 PM
  2. Roll and tip painting
    By csp in forum BOAT BUILDING / REPAIRING
    Replies: 2
    Last Post: 2nd August 2006, 03:47 AM
  3. Painting Bathroom Floor Tiles
    By nt900 in forum PAINTING
    Replies: 16
    Last Post: 5th May 2006, 12:48 PM
  4. Preparing and painting timber
    By Katie60 in forum PAINTING, PLASTERING, TILING, DECORATING, etc.
    Replies: 3
    Last Post: 1st February 2006, 12:52 PM
  5. Putty
    By hoarenet in forum GENERAL ODDS N SODS
    Replies: 1
    Last Post: 10th September 2003, 01:12 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •