Replacing a kitchen worktop without re-tiling

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As per title really. If I get hold of a replacement with the same dimensions, can I just swap them over and re-seal the edges? Is there anything I need to watch out for?
I'd rather not have to re-tile if at all possible as the whole kitchen is going to get re-done in a couple of years time, but the worktops are in a real state and starting to rot behind the sink (it's the cheap wood block type).

Thanks.

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Thanks for all the replies folks, plenty to think about there.

The tip about lowering the units first is a good one. Will give that a go if possible, but as the kitchen was fitted by the previous owners (and his DIY skills are questionable based on the evidence we've seen elsewhere) I'm fully expecting to find absolutely everything nailed and/or glued to the walls wherever it was possible

Griff Boy said:

It can usually be done, in fact we do it all the time. The only issues are usually relating to the thickness of the old and new worktops, ie some old laminate or wood can be 28/27mm thick, where as alot of new worktops can be 40mm.

I've already checked this. The worktop is 28mm deep and Ikea still sell the same one, so we could do a direct replacement. We'd just need to keep on top of maintaining/oiling it.
Alternatively, I've seen some laminate ones in Argos of all places which are the same depth.

As mentioned, this is really just to tart it up a bit for a couple of years until we can get the whole thing re-done exactly how we want.

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DocArbathnot said:

(Unless your wood working skills are up to par of course)

Mine: Not so great
My dads: Top notch

I just need to coerce him to work at a rate that's compatible with the wives view of how long a job should take....

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Ken May said:

How did you get on with replacing worktops?

I bottled it in the end The risk of having to do a whole load or remedial work put me off.
I ended up stripping them back and making good as best I could, then varnished the bits around the sink to prevent them getting any worse and re-oiled the rest.
It looks a bit crap in places, but it will do until we replace the kitchen in a year or so.