I have painted bare mahogany double doors and am getting a reaction. Here's the details:
1 coat of oil based aluminium primer (advised to prevent oils seeping through to top coat), 2 coats white Dulux Weathershield, self undercoating, followed by 3 coats purple Dulux Weathershield.
When I did the 3 purple coats after drying overnight, everything was fine, no reactions or stains that I have now started to appear. The stains initially looked like spores.. white wispy tiny lines dispersing from central points, almost like the pattern damp/fungi can create on a wall. They rubbed off easily when touched, but the next day they were back, in similar areas (from what I can recall), but also now more of like markings as if someone had chucked milk on my door, with clear indications of running/drips. I washed it off again in one area and painted over that area again to see if it came back... it did! And now in other areas.
I'm absolutely gutted and the finish is brilliant and was very pleased with it. The weird thing is, it seems to be only in areas, nothing at the top halves, quite a bit on the ledges of the architrave and in the corners/creases of the architraves, but this morning, all over one of the inset panels!
We 'do' live right on the seafront in Northern Ireland so could the salt be having an effect? Although the original pitch pine doors were painted with the very same paint and was fine. Other points to consider is the temperature has dropped a fair bit over the last few days (especially at night) which coincided with the stains (but then the paint was dry after an hour so can't see this being an issue). I did also use a small brush before any of this started happening to just touch in areas where it was still a bit patchy/not full opaqueness, and the brush I used had been used that day for oil based paint in another room, but I obviously washed it out – at first, again, from memory, I thought the areas which first came up were where I'd used this brush, but now that an entire inset panel has come up it rules that out because I certainly didn't paint that with the small brush, it was just small areas like the sides of the architrave etc.
Any help much appreciated, here's the pics (note also on the pic of the full lower panel effected, quite strange, there seems to be clear line across the entire bottom left corner where it's not bee effected!??):
//www.diynot.com/network/Deansplit/albums/13580
(had trouble uploading the pics into this post so hoping this link works...?)
1 coat of oil based aluminium primer (advised to prevent oils seeping through to top coat), 2 coats white Dulux Weathershield, self undercoating, followed by 3 coats purple Dulux Weathershield.
When I did the 3 purple coats after drying overnight, everything was fine, no reactions or stains that I have now started to appear. The stains initially looked like spores.. white wispy tiny lines dispersing from central points, almost like the pattern damp/fungi can create on a wall. They rubbed off easily when touched, but the next day they were back, in similar areas (from what I can recall), but also now more of like markings as if someone had chucked milk on my door, with clear indications of running/drips. I washed it off again in one area and painted over that area again to see if it came back... it did! And now in other areas.
I'm absolutely gutted and the finish is brilliant and was very pleased with it. The weird thing is, it seems to be only in areas, nothing at the top halves, quite a bit on the ledges of the architrave and in the corners/creases of the architraves, but this morning, all over one of the inset panels!
We 'do' live right on the seafront in Northern Ireland so could the salt be having an effect? Although the original pitch pine doors were painted with the very same paint and was fine. Other points to consider is the temperature has dropped a fair bit over the last few days (especially at night) which coincided with the stains (but then the paint was dry after an hour so can't see this being an issue). I did also use a small brush before any of this started happening to just touch in areas where it was still a bit patchy/not full opaqueness, and the brush I used had been used that day for oil based paint in another room, but I obviously washed it out – at first, again, from memory, I thought the areas which first came up were where I'd used this brush, but now that an entire inset panel has come up it rules that out because I certainly didn't paint that with the small brush, it was just small areas like the sides of the architrave etc.
Any help much appreciated, here's the pics (note also on the pic of the full lower panel effected, quite strange, there seems to be clear line across the entire bottom left corner where it's not bee effected!??):
//www.diynot.com/network/Deansplit/albums/13580
(had trouble uploading the pics into this post so hoping this link works...?)