Always bath in first. If you tile and the corner is out of square then the silicon looks unsightly. You can 'lose' the angle when you tile and sit the tiles over the bath. ![Thumbs Up :thumbsup: :thumbsup:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
How much would the cement board cost to cover approx 3m²?