Ceiling Plastering in London

Because the crack is movement rather than a hole. Filling treats the mark and leaves the cause. Where a ceiling is moving across a wide area, overboarding through to the joists gives a surface fixed to something solid.

Overboarding is cleaner, quicker and does not fill the house with a century of dust. Pulling down is the answer where the ceiling is already failing or where the void above has to be reached for wiring or insulation.

It is worth looking at soon. A bow means the plaster has come away from the laths above it, and it does not reattach. How urgent depends on how far it has gone, which is why it gets looked at rather than diagnosed on the phone.

Yes, once the leak is fixed and the structure has dried. Going in before it has dried means doing the same repair twice, so the drying time is part of the programme.

Yes, including dormer cheeks and the reveals around velux windows. Those reveals get set out square and boarded true before any finish goes on them.

Yes, and it is best isolated at the consumer unit first. Fittings come off before the ceiling is worked on and go back once it has dried.

Per square metre usually, because it is worked overhead and takes longer. A room where both are done at once works out better than doing them on separate visits.

The same four to seven days as a wall, sometimes longer, because ceilings get less air movement across them. Wait for the colour to even out.