You do not worry too much about it, some orchids grow roots all over the place.

Repot? If necessary, but perhaps in spring, when growing conditions would be better.

As arthurm says, don't worry too much about roots out of the pot. When you do repot, if you can, you can tuck them back into the new pot. If not, don't worry about it. It is advisable to wait for a suitable time to repot your particular plant as repotting at the wrong time can make the plant sulk for a long, long time. The tips of the roots should be green, which is an indication that they're active. As arthurm says, in the spring growing conditions are better.

Thanks to both - mine are inside so doesnt know when its Spring? Roots are pale green along their length
Or is there something more?
Thanks again

Perhaps if you give more information such as the name of the orchid you will get more definite replies. I'm guessing that your orchid is a Phalaenopsis which tend to grow aerial roots. Has it flowered? Are the leaves healthy, temperatures, under lights, morning or afternoon sun etc.etc?????.

Thanks - it is a Phalaenopsis. Its fine - has flowered a few times over the last 2 years. Leaves look great. It's in an afternoon sun window.
I was just wondering what to do with the roots.
It's interesting that I've never fertilized it. Now I read I should use a high N once a week
I liked it so much I bought a cymbidium That hasn't flowered yet - looks like it has a dead spike

pgh3irn, if you start repotting every time you have an escaping root or a root that doesn't grow into your pot, you'll be doing a lot of unnecessary repotting. Epiphytic orchids (orchids that grow on surfaces in nature) don't really understand pots. Let it go and try to be mindful of it. Even if it gets damaged, it's not the end of the world (or the plant). It'll make more.

John :>)

Thanks for the advice. I'm a rookie but love the devils. I had read where you should go easy on the repotting. The plant looks very healthy so will let well alone.
Thanks again - p

Using fertilizer with a high N is okay, but bear in mind that high N tells the plant to grow leaves. A few months before the plant is due to bloom again you might want to switch to a low N fertilizer, which tells the plants to grow flowers.

Amazingly enough even if they are kept indoors they know what season it is IMHO. Here's a tip I read a while back...when you do go to repot,use a clear plastic pot, roots have a tendency to stay in the pot better.You won't get so many aerials and you can see what's going on in there(if your nosey like me).gb

PGH, just a little different take on things. If the phal has been in the same pot for two years,it is due for a repotting.The mix does decay and will start to hold too much moisture. Excessive aerial roots can also be a sign that many roots below have rotted ( I say can )As many stated above,be mindful of the correct time to repot. :)