Harry Bloomfield wrote:
For the tiled area, you can buy a roll of plastic strip 1.5" wide, which
is hinged down the centre (0.75" per surface). On the back is a soft
thick sealant. These work well if the surfaces are clean and if they are
applied by applying pressure with a roller to squeeze the sealant
tightly onto place.

Yup, works well - we've had that stuff in use for over 10 years now.

--
Adrian C