I will be tiling an outdoor area, although outdoors it has a roof and 3 sides. The area is higher than the joining slabs with a slope which is on the the open side so it does get rain sometimes blown in onto it, also when being in the garden would have wet feet so it needs to be slip proof. The width is about 5 inches - see pictures. I will be tiling with a light grey colour tile and was thinking of an aluminium ribbed 5 inch wide profile. Any other ideas. And can I stick such a profile with the tile ady after a good going over on the back of the aluminium with an angle grinder.