Exterior tiles | Beautiful outdoor tiles at low trade prices.When using outdoor tiles please be careful with smoother finishes as they can become slippery when wet. For help with choosing exterior floor tiles and for free tile samples please contact Direct Tile Warehouse. Best sellers . Architonic Porcelain Floor Tiles - Grey Anti Slip Tiles (60 cms x 60 cms). ￡6.12 per tile*; ￡17.02 per.