Took my clio expression into renault dealer today because of a sunroof that creaks when driving the car (stops when you open it). dealer told me there is a modification out for this,a soundproofing gasket and longer screws but as usual it had to be ordered. this is a known fault and is covered under the warrenty mine goes in next week to be done. i know some clio owners on here have the same problem. so get on to renault about it.
ps this is for manual sunroofs.