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KITCHEN GUIDE · SURFACE PREPARATION

Check what it sits on before anything new goes on.

A new benchtop, splashback or floor can only be as sound as the surface underneath it. Before finishes are chosen for a kitchen renovation in Brighton, Ivan Bodnar checks four things: moisture, substrate suitability, service access and underlying damage. If those checks are skipped, the likely result is avoidable rework.

By Ivan Bodnar · Independent Home Renovation Specialist · Approx. 15 years’ personal renovation experience

Worker wearing protective clothing and a face covering while sanding a wooden surface with a handheld power sander, with visible dust.

Reference image: sanding a surface during preparation

Finishes go in last. Everything they rely on has to be right first.

Most people start a kitchen renovation by looking at benchtop samples and splashback tiles, which makes sense. But those are the last materials to go in. A stone top on a cabinet run that isn’t level, tiles on a damp or crumbling wall, or new flooring over a soft patch can all fail early. Fixing them usually means taking the new work out again.

So preparation starts during the on-site assessment. Before choosing finishes, Ivan looks at what they will sit on. Checking first is usually far simpler than redoing finished work. It also makes the written quotation clearer, because it is based on the actual kitchen. For the wider approach, see Surface Preparation & Suitable Materials.

02 · THE FOUR CHECKS

Four things checked before any finish is chosen.

Moisture, substrate, service access and underlying damage. Skipping any of them before new finishes go on can lead to avoidable rework.

C1 · MOISTURE

WHAT GETS CHECKED

Staining, swelling or soft board under the sink and around the dishwasher. Also signs of earlier leaks where the walls meet the floor.

WHY IT MATTERS

New cabinetry or flooring fitted over damp material hides the problem without fixing it.

C2 · SUBSTRATE

WHAT GETS CHECKED

Whether the wall or floor is flat, firm and suited to the planned material. Loose plaster, old adhesive and drummy tiles are all checked.

WHY IT MATTERS

Tile, stone and sheet materials each need suitable support. A weak base can crack the new finish or let it lift.

C3 · SERVICE ACCESS

WHAT GETS CHECKED

Where water, waste and power run, and whether they can still be reached once the new finishes are in.

WHY IT MATTERS

If changes are needed, they are planned with authorised specialists before the finishes close the area in.

C4 · UNDERLYING DAMAGE

WHAT GETS CHECKED

Damaged sheeting, deteriorated framing or past water damage. Some of it is only visible once old cabinets, splashbacks or floor coverings are removed.

WHY IT MATTERS

It can change the scope. The written quotation sets out what the assessment found and what may need review.

A person's hand positioning white rectangular wall tiles over a wood-effect floor, with adhesive ridges visible on the wall behind.

Reference photo: wall tiles being set into adhesive.

03 · WHERE IT SHOWS UP

Benchtop, splashback, floor.

Benchtop. A benchtop is only as level as the cabinet run underneath it. Before a new top is measured, the run is checked for carcasses that have sagged or swollen with moisture. A heavy top won’t straighten a run that is out of level. If you’re wondering what can stay, read whether existing cabinets can be reused.

Splashback. New tiles or panels need a wall that is sound, dry and flat. Old tiles, adhesive residue and damaged plaster are assessed first. Sometimes the wall can be prepared as it is. Sometimes the sheeting needs replacing. See what to check before replacing a splashback.

Floor. If the kitchen floor is uneven, new cabinets and new flooring both inherit the problem. Levels are checked early, so the cabinetry and flooring plan starts from what is really there. More in dealing with an uneven kitchen floor.

04 · LIMITS & LICENSED TRADES

What an inspection can and cannot show.

An on-site assessment looks at the visible condition, the access points and the signs that usually point to a problem underneath. It cannot reveal every concealed issue. Some conditions only appear once cabinets or old finishes come out, and what turns up may change the scope.

Any plumbing or electrical change is carried out by appropriately authorised specialists. Ivan is an independent sole trader. He does not claim trade licences or builder registration, and he does not personally carry out licensed plumbing or electrical work, structural engineering or asbestos removal. Permits, registration, insurance and licensed trade requirements vary from project to project and are confirmed for each job. Read more on licensed trades & regulated work and plumbing and electrical changes in a kitchen.

05 · FURTHER READING

Before you choose finishes.

If you want your kitchen looked at before you choose finishes, request a kitchen renovation quote and arrange a free on-site assessment. You can also call Ivan on 0413 142 055, 9:00–18:00, Monday to Sunday.