Commercial plastering in Sydney, priced off the drawings and built to the programme

We price what is drawn and name what is not. Documented elements get firm numbers, and anything still moving is carried as a rate, a provisional quantity or a stated exclusion, so you can compare quotes instead of guessing which one buried the bigger allowance.

A single lump figure built on assumptions nobody wrote down is how variations turn into arguments. If we have assumed something, the assumption is on the quote in plain words so you can correct it before the job starts.

Often it has to be, particularly in an occupied building or anywhere with trading hours. Tell us the available window at enquiry stage and it is built into the programme and the price, including the extra mobilisations a short shift involves.

Worth checking on your side first: what the building permits in terms of after-hours access, noise and use of the lift, and whether anyone else is booked into the same window. A shift that arrives to find no lift access is an expensive way to learn that.

Either, as long as it is decided before the quote rather than during the job. Supplied by us, the package covers board, framing, beads, compound, fixings and any insulation the wall type needs, and the responsibility for having the right products on site is ours.

Free issue works where a builder has a supply agreement, but the scope has to say who orders, who takes delivery, who stores it and who replaces damaged sheets. Free issued material that arrives late lands on the programme, so the lead time matters as much as the price.

A clear work area, the set-out confirmed, services roughed in or located, power and light, and agreed access for material and waste. On a rated or acoustic element we also need the specified system confirmed in writing, because it changes the framing, not just the board.

The most useful thing is a named site contact who can make a decision. Most delays on a lining package are not plaster problems. They are a question about a head detail or a ceiling height that sat unanswered for two days.

The trade that cuts an opening is responsible for cutting it properly: back to the framing where possible, and to the size actually needed. Closing those openings afterwards can sit with us, and it should be scoped as its own item rather than absorbed into the lining price.

Planning openings is far cheaper than repairing them. Where a valve, damper or junction box has to be reachable later, an access panel set in while the lining is being built costs a fraction of cutting and patching the same spot twice.

Match it to what the surface carries and how it is lit. A lining that disappears behind joinery does not need the same finish as a lobby wall under a grazing light, and specifying the higher standard everywhere spends money where nobody will see it.

What matters is that the level is named in the specification and read the same way by the builder, the plasterer and the painter. Most disputes about a finish are two people comparing one wall against two expectations, one of which was never written down. Where a whole surface has to read flat, that is skim coating.

By deciding at drawing stage how it gets opened. If plant above a set plasterboard ceiling needs regular access, either the ceiling gets panels where they are genuinely useful, or that area is better as a grid ceiling where any tile lifts out.

Left undecided, someone eventually cuts a hole in a finished ceiling and the patch shows under a downlight from then on. Walk the reflected ceiling plan with the mechanical and electrical contractors once, before anything is set, and mark where access has to be.

We hand over set, sanded and paint ready. Painting is a separate trade and we do not quote it, which keeps the responsibility clean: the surface we leave is measured against the specified finish level, and the coating on top is the painter's.

What helps is talking to the painter before we finish rather than after, particularly if they need the surface prepared differently for a particular coating.