drain hole

Help please. New house has shower and I cannot work out how to remove the drain cover. Turns clockwise and anticlockwise but does not loosen. No visible screws or bolts. Any ideas?

Hi all, About to lay a new patio with 18mm thick sandstone slabs. Have pulled up old patio to find a usable concrete base. Want to install a recessed drain cover but wondering how to do this as the depth of the recess frame is 60mm so am guessing the patio would have to be level to this? Is...

Hi guys, I have 2 lengths of buried conduit containing swa and external waterproof data cable. There are no drain holes in the conduit so it's liable to fill up with water. This shouldn't affect the cable but won't look great. Is it ok to blob some sealant in the ends? Or does it have to be...