Hard to say with the info provided. It would depend on the potting medium, what you mean by "a pretty thick layer" and what orchid you have.

tj

What potting medium? What type of orchid?

Here’s some photos. It’s a phalaenopsis orchid I believe.

The site is being buggy and not letting me add anymore photos..

Circumvented Houzzs bugginess! Here is links to the other 3 images. Had to repot it again after taking the pics.

https://drive.google.com/open?id=1IeGMLXv4pc_v8GAyjqH7JjdrKXcYv5Oe

https://drive.google.com/open?id=165XiTST454gL8DyIykr_LbhyArGBC3d_

https://drive.google.com/open?id=1WRkr1F56sjH04ldI0Hs1Ww2LPoiHCZP9

Seams (the above picture) to be about the right size pot. Does it have a drain hole?

It has drainage holes on the sides. The last link‘s image shows how the sides look.

i gave it two ice cubes day before yesterday so we’ll see how it goes. I am hoping no mold has grown on the bark. Plant will let me know in the next day or two if it has.

Did you soak your planting medium beffore you did the repot? the Photo that shows the roots looks too dry. The bark itself looks dry. I always give my plants roots a soak, time depending on how dry they appear and new bark soaked overnight.

What Sheila said. I, too, grow phals in bark and when I water I set the pot in a container and fill it to the bark level and let it soak for 15 minutes. Lift and drain. At this time of year that is enough for 5-7 days. Keep it out of direct sun but near a bright window. I never had mold on the bark, but if I did I wouldn't worry. Molds are host specific and what likes bark would likely have no effect on the plant.

tj

I think you're right, that it's pretty dry. But soaking is what caused the root rot. I over watered and a leaf started to yellow. When I pulled it from the bark, the bark was full of white mold and some of the roots had molded too. Mold is common for house plants in Oregon. The grass I grow for my cat always gets mold on it and I have to add cinnamon to the top layer to prevent it. I have been giving it ice cubes but I don't think it's been getting enough still.

It's possible though, now that I think about it, is the mold grew for a different reason. I actually ran it under the faucet one day and then did the same the next. So it got heavily soaked twice. Being that soaked for longer might have been what molded it. I'm still kind of afraid to soak the bark though... But maybe just doing a small pouring of water over the roots and bark would be better than ice cubes.

What about using a spray bottle to spritz it? That is what I use on mine.