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madmike
Junior Member
Joined: 29 Sep 2008
Posts: 23
Location: Cornwall
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 Posted: Mon Sep 29, 2008 5:41 pm Post subject: Gloss bubbling on front door |
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Hi Guys, just painted a hardwood front door, knotted with patent knotting used dulux trade weathershield stages 1 & 2, and then just normal dulux trade gloss, no probs until the sun came out and now where the knots seem to be the paint is blistering down to the knotting solution. heeeelp.  |
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Have Brush Will Travel
Senior Member
Joined: 23 Mar 2007
Posts: 584
Location: Wales
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| Posted: Mon Sep 29, 2008 7:52 pm Post subject: |
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Is it only on the knotted areas?..because you can have problems if you use the 'primer' over knots..
The primer is meant to be absorbed into the surface, but cant because of the knotting solution, it will just sit there...then when you gloss the gloss has no adhesion to the surface
If you looked at the paint on the back of those bubbles under a microscope youll find a layer of 'primer' stuck to them and not the door.
youll have to scrape of the bubbles..and then prime using using aluminium wood primer, its self knotting so the resin wont stain the surface of the finish paint...fill with exterior grade polyfiller undercoat, rub the whole door down with very fine (320 grade) wet and dry paper then gloss the whole lot again.
(just as a footnote..stabilising solution can do the same thing if its put on a non absorbent surface)
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Last edited by Have Brush Will Travel on Mon Sep 29, 2008 8:10 pm; edited 1 time in total |
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madmike
Junior Member
Joined: 29 Sep 2008
Posts: 23
Location: Cornwall
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| Posted: Mon Sep 29, 2008 8:04 pm Post subject: |
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| Yes, only seems to be bubbling on the knotted areas ? |
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Have Brush Will Travel
Senior Member
Joined: 23 Mar 2007
Posts: 584
Location: Wales
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| Posted: Mon Sep 29, 2008 8:13 pm Post subject: |
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| madmike wrote: |
| Yes, only seems to be bubbling on the knotted areas ? |
See above Mike..I think the messages have crossed.
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madmike
Junior Member
Joined: 29 Sep 2008
Posts: 23
Location: Cornwall
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| Posted: Mon Sep 29, 2008 8:19 pm Post subject: |
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| wow, thanks for the quick reply and great advice. great site only found it this evening. what would be the answer in the future. just use aluminium primer and no knotting at all? |
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Have Brush Will Travel
Senior Member
Joined: 23 Mar 2007
Posts: 584
Location: Wales
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| Posted: Mon Sep 29, 2008 8:38 pm Post subject: |
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Yes mate
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madmike
Junior Member
Joined: 29 Sep 2008
Posts: 23
Location: Cornwall
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| Posted: Mon Sep 29, 2008 8:44 pm Post subject: |
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thanks HBWT. looks like ive got a bit of scrapping to do, oh well wont make that mistake again.  |
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