Thanks for confirming Silicone is OK on copper.
I thought of the collars, but the pipes are right up against the wall and would need to be cut and thus look naff (also dark flooring).
MSH
Hi. I have fitted vinyl Goliath flooring in my bathroom and want to add some clear waterproof bathroom sealant around the base of the (enamel painted) radiator copper pipes as they come through the flooring to stop any water dripping through into the void.
I understand some types of sealant...