Problem Solving Forum
May 9 - May 15, 2011
What is best way to remedy over-thickness of a topcoat after it has dried and cured?
ramana murty of International Paint on
June 13, 2013:
Consult the manufacturer of the paint, and if the ...read more Consult the manufacturer of the paint, and if the over-thickness is within the limits and there is no sign of defects, then leave it without further damage to the applied coating. If the paint rep recommends removing it, then go for sweep blast with fine copper slag (0.2 to 0.5mm abrasive size) and reapply full coat of top coat.
Ahmed Abd Ellatif of MOPCO on
June 10, 2013:
Completely remove the topcoat layer by sweep blast ...read more Completely remove the topcoat layer by sweep blast and apply another topcoat.
Yan David of DNVGL on
May 22, 2011:
If sanding is used,workers should pay attention to ...read more If sanding is used,workers should pay attention to the sanding job, because sandpaper marks are difficult to cover with a topcoat paint.The look of the topcoat is important.
remko tas of Futuro SRL on
May 10, 2011:
If the overthickness is p ...read more If the overthickness is present at spots only, sand it down to the coat below and repaint the area. In case the whole object has a topcoat with overthickness, first analyze if this has impaired its performance (check on paint cracking and ultimately do an adhesion test) before deciding if it is wortwhile to remove the topcoat. If so, you may consider more eficient ways to remove it such as doing an abrasive blast and starting the whole paint scheme again.
Muhammad Iqbal of Aces Global Quality Service on
May 9, 2011:
Sand it down to a little bit to below the&nbs ...read more Sand it down to a little bit to below the specified thickness and apply a thin coat for cosmetic purposes.