Ordering bathroom fixtures without stalling the job.

Why ordering matters more than people expect.

Once the old bathroom is stripped out, the room is unusable until the new one is finished. Every day spent waiting for a missing item is a day without a bathroom. The trades also move on to other jobs while they wait, so a short delay in delivery can become a longer delay in getting them back.

On the North-West Coast, a lot of specific products are not held in local stock. Special-order tapware finishes, particular tile ranges and some vanity models come from mainland warehouses or overseas and cross Bass Strait by freight. That is not a problem if it is planned. It becomes one when an item is ordered after demolition, or when a substitute is needed and nobody has decided what counts as acceptable.

The fix is simple: split every item by the stage it is needed at, work back from that date using the supplier’s lead time and a buffer, and agree a substitution process before anything is ordered. The timeline guide shows how the stages fit together.

Watch the calendar as well. Many suppliers and manufacturers slow down or close over the Christmas and New Year period, and freight can be busier before holidays. A lead time quoted in November may not hold if the order falls into the shutdown. If your demolition date is in January or February, place orders earlier than the quoted lead time suggests and confirm dispatch dates in writing.

What is needed at each stage.

The first row is the one that matters most. If a mixer body or drain is not on site when the plumber roughs in, work stops, or worse, a different product is installed and your chosen trim will not fit it. A good renovator will not start demolition until the rough-in items are on site or firmly confirmed.

Rough-in items lock in your later choices.

Many tapware ranges use a concealed body that sits in the wall and a visible trim that screws onto it. The body and trim are generally made to work together within a brand or range. That means the trim you see at the end is decided when the body goes in at rough-in. If you change your mind about the tap style after tiling, the body may have to come out, which means opening the tiled and waterproofed wall.

In-wall toilet cisterns work the same way. The frame installed in the wall sets which flush plates and often which pans can be used. A linear drain sets the floor fall and tile layout. A built-in bath sets the wall and floor tile heights. Each of these decisions should be final before demolition. The toilet relocation guide explains how the pan type and set-out interact with the drain.

The vanity, mirror and pan do not need to be delivered before rough-in, but the model must be known. The plumber sets waste heights and water points to suit the vanity, and the electrician sets the mirror connection. The vanity guide and the lighting guide cover what to decide.

Keep one selections schedule.

The easiest way to avoid ordering mistakes is a single list that everyone works from: you, the renovator, the plumber, the electrician and the tiler. It can be a spreadsheet or a page in the quote. For each item it records the product name and model number, the finish or colour, the supplier, who is buying it, the stage it is needed by, the order date, the expected delivery date, and whether it has arrived and been checked.

A schedule stops the common problem of the plumber working from one version of your choices while you are looking at another. It also makes substitutions easier to track, because the change is recorded against the item and everyone can see it. When a selection changes, update the schedule first and tell each trade that it affects.

Link each line to the specification sheet, not only the product photo. Specification sheets show the dimensions, connection details, set-out ranges, water rating and certification that the trades need. A picture of a tap does not tell the plumber which concealed body to install. At handover, the schedule becomes your record of what is in the bathroom, which helps when a part needs replacing years later.

WaterMark and WELS: what to check.

WaterMark. The WaterMark Certification Scheme, administered by the Australian Building Codes Board, is a mandatory certification scheme for specified plumbing and drainage products. Products that need it are listed on the WaterMark Schedule of Products, and certified products carry the WaterMark and appear on the WaterMark product database. If a product that needs WaterMark certification is installed without it, the plumbing authority may not accept the installation. This matters most when buying from overseas marketplaces or unfamiliar online stores, where tapware and flexible hoses may not be certified.

WELS. The Water Efficiency Labelling and Standards scheme covers taps, showers, toilets and some other products. Regulated products must be registered and labelled with their water efficiency rating when they are supplied or offered for supply in Australia. You can check a product on the WELS register. The star rating is also useful for comparing running costs, since a more efficient shower uses less water and less energy to heat it.

Ask your renovator to confirm that each selected plumbing product is WaterMark certified where required and WELS registered where regulated. A reputable supplier will state both on the product page or specification sheet.

Substitutions: agree the rules first.

Products get discontinued, run out of stock or arrive damaged. Substitutions are normal. The problem is an unplanned substitution that you only find out about at handover, or one that does not match what was built into the wall. Agree the process before ordering, and have it in the contract or quote.

A fair substitution process has four parts. The renovator tells you before ordering a replacement. They explain how it differs from the original: size, connection or rough-in compatibility, finish, water rating and warranty. They state any change in price, up or down, and any effect on the program. And the change is approved the way your contract requires.

That last step is a legal one, not just good manners. Tasmania’s Residential Building Work Contracts and Dispute Resolution Act 2016 requires a builder to put any agreed variation of a residential building work contract covered by the Act into writing (section 17). The variation document has to describe the change and, depending on the contract type, set out its effect on price and any expected delay (section 18), and it must be signed by the builder, who must take all reasonable steps to have the owner sign it as well (section 19). Your own contract may add its own steps. A text message or email is a useful record of the conversation that led to the change, but where a signed variation is required it does not take its place. Ask at quote stage how the contract handles variations and substitutions, and keep a copy of every signed variation with the selections schedule.

When comparing a substitute, check the details that affect installation, not just the look. For a toilet, that is set-out range and outlet type. For tapware, rough-in body compatibility and spout reach. For a vanity, overall width and depth, and waste position. For tiles, size, thickness and slip rating. For a shower screen, glass thickness and hardware finish. A cheaper substitute that needs a different body or waste position can cost more in labour than it saves.

Owner-supplied items.

Some homeowners want to buy their own fixtures, either to use a particular supplier or because they have found a good deal. Many renovators will install owner-supplied items, but the arrangement needs to be clear. Who checks the item is correct and undamaged? Who pays if it arrives late and the trades have to come back? Who is responsible if it fails after installation?

Typically the supplier warrants the product and the installer warrants the installation, but that split only works if the product is suitable and compliant. Get the renovator’s list of acceptable specifications before buying, confirm WaterMark and WELS status, and agree the delivery date against the program. If the item needs a matching rough-in body, buy the body and trim together.

Keep all receipts, specification sheets and warranty cards in one folder. They will be needed if anything fails and are useful when the house is sold. The renovator selection guide covers other contract points worth agreeing.

Delivery checks and storage.

Open every box as soon as it arrives. Check the model number against the selection schedule, the finish, that all parts and fixings are included, and that nothing is chipped, scratched or bent. Photograph any damage and report it to the supplier the same day. Finding a chipped basin at fit-off can hold up handover while a replacement is sent.

Check tile boxes for batch or shade numbers and make sure they match. Order enough for the job plus spares from one batch, since tiles from different production runs can differ slightly in colour and size. Keep a few spare tiles after the job for future repairs.

Store items dry, flat where the packaging says so, and away from the work area where they could be knocked or covered in dust. A garage or spare room is fine. Glass, stone tops and ceramic basins are the most fragile items. Label them so nobody moves or stacks on them by mistake.

Hypothetical example: a discontinued mixer.

Hypothetical example

A homeowner selects a brushed-finish shower mixer and basin wall mixer from one range. Two weeks before demolition, the supplier says the shower mixer body is out of stock with no confirmed date. The renovator tells the homeowner the same day and offers two options: a mixer from another range in the same brushed finish, available now, or waiting for stock and moving the start date.

The alternative uses a different concealed body, so the basin mixer would not match unless it changes too. The homeowner reads the new specification sheets and discusses the options by email, then signs a written variation that lists both substitutions, the small price difference and the fact that the start date does not change. Both bodies arrive before demolition. The job starts on time, and the trims fit at fit-off because body and trim came from the same range.

Common mistakes and what to do instead.

Fixture ordering questions.