Hi all i have a 6-8 inch deep hole in my kitchen floor which eas dug ti fix a leak. I now need to fill it ready for a levelling compuns to lay new floor. Is it as straight forward as mixing some concrete? I assume i can cover the lagged water pipe? I need to leave a small divot under the new push fittings so that it can be removed if needed. If i level to floor there would be no room.