What are the best materials for outdoor tiling?

.if u think the tiles need to b sealed then seal them b 4 u grout then again after any product by bal is top quality..some sealers r not suitible for some tiles so make sure u know wot type of tile u hav.. leave tiles at least 24 hours b 4 u grout and cover if it rains..good luck oh and dont buy a rapid set adhesive if u hav never tiled b 4!! lol
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Wirral Tiling