10 Jun 2017
Reaction score
United Kingdom
Hi all

Recently I put up some polystyrene coming up around my front room. The idea of keeping it low of the ceiling was so I can put some led lighting strips behind it. So I did that . However than I painted over it with white gloss paint and in day light it looks spot on without the lights on. Later on that night I switched on the led strips and noticed that when lit up you can see that the coving has been painted and can see brush marks. It taking away the effect of led strips.

Pls can anyone help and advise how to get rid of the brush marks while the led strip is on.
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Did you accidentally paint the LED strips while painting the coving?

Perhaps you will have to remove the strips and do a better paint job?
The led strips are not painted whatsoever, I painted the coving and now at night when the led lights are on , the paint on coving is showing the brush marks and the fillers where the joints of the coving has been attached
Polystyrene not suitable for lighting, you needed the cardboard covered styrene.
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Yes I realised after there anywhere I can rid of them like paint over with a primer then paint over with white gloss paint.
Unlikely to be effective.If you have room you could remove leds and add tape to the inside edge then re install led's.Foil tape would prevent the light penetrating the coving, but a fiddle of a job.
Yeah it seems like it is going to be fiddle of a job. But going to see what I can do. Someone has told me to paint it over few times. First primer then gloss paint as polystyrene coving sucks the paint up quick

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