How often should granite be sealed?

Most granite benchtops benefit from resealing every 12 to 24 months, though highly porous stones or heavily used kitchens may need it more often. A simple water test — a few drops left for five minutes — will tell you if the sealer is still repelling moisture. If the water darkens the stone, it is time to reseal.

Does quartz need sealing?

No. Engineered quartz is non-porous and does not require sealing. It does, however, need protection from excessive heat and prolonged UV exposure. Always use trivets under hot pans and avoid placing quartz benchtops in unshaded outdoor areas.

Can scratches on a stone benchtop be repaired?

Most scratches on natural stone can be professionally polished out, and many surface marks on engineered stone can be blended or repaired. Deep gouges may require filling with a colour-matched resin. Always have a technician assess damage before attempting home repairs, which often make the problem worse.

Is vinegar safe to use on stone benchtops?

No. Vinegar is acidic and will etch calcium-based stones such as marble, limestone, travertine and dolomite. Even on granite and quartz, repeated exposure can degrade sealers and dull the finish. Always use a pH-neutral stone cleaner.

What cleaner should I use on my stone benchtop?

A pH-neutral cleaner specifically formulated for natural or engineered stone is the safest choice. Avoid bleach, ammonia, vinegar, citrus-based cleaners and abrasive powders. Warm water with a small amount of pH-neutral dish soap is a safe daily option.

Stone Benchtop Maintenance: The Complete Homeowner's Guide

How to care for granite, quartz, marble and porcelain benchtops in New Zealand homes — daily cleaning, sealing, common mistakes and when to call a specialist.

Why Maintenance Matters

A quality stone benchtop should last decades, but longevity depends on correct maintenance. Stone benchtops are one of the most valuable features in a modern kitchen, yet many homeowners unknowingly shorten their lifespan through incorrect cleaning and day-to-day habits.

This guide explains how to care for natural and engineered stone surfaces in New Zealand homes, what products to avoid, how to prevent damage and when to seek professional restoration.

Daily Cleaning Routine

Daily care doesn't need to be complicated:

Wipe spills promptly with a soft microfibre cloth.
Use a pH-neutral stone cleaner, or warm water with a small amount of pH-neutral dish soap.
Avoid acidic products such as vinegar and lemon-based cleaners on natural stone.
Always use chopping boards for food prep and trivets under hot pans.
Blot rather than scrub when a spill has just occurred.

Weekly & Monthly Maintenance

A short weekly clean with a purpose-made stone cleaner keeps everyday residue from building up. Monthly, inspect edges around sinks, cooktops and joins for early signs of wear — small issues found early are almost always cheaper to fix than damage left to progress.

Wipe down the entire benchtop, including edges and undersides where possible.
Check silicone joins around the sink and cooktop for lifting or discolouration.
Look for dull patches, water marks or hairline cracks under raking light.

Annual Inspections & Sealing

Once a year, take a closer look at the entire surface and perform a simple sealer test: place a few drops of water on the stone and leave for five minutes. If the stone darkens noticeably, the sealer is due for renewal.

Professional resealing is a straightforward service that dramatically extends the life of natural stone. It should be paired with an inspection of joints, edges and any historic repairs.

Granite Care

Granite is exceptionally hard and heat-resistant, but it is still a natural stone with varying porosity. Most granite benefits from periodic sealing — how often depends on the specific slab, its finish and how heavily the kitchen is used.

Reseal every 12–24 months, or when water no longer beads.
Use pH-neutral cleaners only.
Wipe up oil and wine spills promptly to prevent staining.
Chips on edges are one of the most common granite problems — usually repairable.

Quartz (Engineered Stone) Care

Engineered quartz is non-porous and does not require sealing. It is very stain- and scratch-resistant in normal kitchen use, but has two weaknesses to respect: heat and UV.

Always use trivets — thermal shock can cause cracking around cooktops.
Avoid using engineered stone in unshaded outdoor kitchens; UV can discolour the resin binder.
Do not use bleach, oven cleaner or paint stripper — these can damage the resin surface.
Cracks on quartz almost always trace back to structural movement, thermal shock or impact and should be professionally assessed.

Marble Care

Marble is beautiful but more susceptible to etching from acidic foods and cleaners. With correct care it can still be an excellent kitchen material — the key is understanding what it does and does not tolerate.

Never let citrus juice, wine, vinegar, tomato or coffee sit on the surface.
Seal annually with a marble-appropriate sealer.
Expect a light patina over time — many owners come to appreciate it.
Professional polishing can remove etches and restore the original honed or polished finish.

Porcelain Care

Porcelain benchtops are extremely hard, non-porous, heat-resistant and UV-stable. They are one of the lowest-maintenance stone surfaces available, but they can still chip from heavy impacts — particularly on exposed edges and mitred corners.

No sealing required.
Clean with any pH-neutral cleaner or warm soapy water.
Protect edges from heavy impact; chip repair is possible but the material is difficult to blend perfectly.

Common Mistakes to Avoid

Most avoidable stone damage traces back to a small number of everyday habits:

Vinegar and lemon — will etch calcium-based stones and degrade sealers on granite and quartz.
Bleach — dulls polished stone and can strip sealers.
Abrasive pads and powders — scratch polished finishes and dull honed surfaces.
Hot pots straight from the cooktop — thermal shock is the leading cause of engineered stone cracking.
Standing water — repeated pooling around taps can penetrate weakened sealers.
DIY repair kits — often make future professional repair harder and more expensive.

Recognising Chips, Cracks, Etching & Stains Early

Regular inspections help you catch problems while they are still small. The earlier damage is identified, the more repair options are usually available.

Chips — most common on edges and around sinks; usually repairable with colour-matched systems.
Cracks — always worth professional assessment; the cause matters more than the crack itself.
Etching — dull patches on marble caused by acids; a physical change to the surface that requires polishing, not cleaning.
Stains — surface stains often clean up; deep stains may require poulticing.
Failed joints — separation, discolouration or movement at joins should be addressed promptly.

When to Call Stone Surface Solutions

Professional polishing, sealing and repairs can often restore a damaged benchtop instead of replacing it, saving homeowners significant cost. Consider a professional assessment when:

Water no longer beads on natural stone.
You notice a new chip, crack or dull patch.
Joints are lifting, discolouring or moving.
Staining does not respond to normal cleaning.
You are considering replacement — always get a repair assessment first.

With more than 16 years of experience, Stone Surface Solutions specialises in extending the life of premium stone surfaces throughout New Zealand through expert maintenance, repairs and restoration.

Conclusion

A well-maintained stone benchtop is one of the most enduring features of a New Zealand home. With a simple daily routine, sensible product choices and periodic professional attention, most stone surfaces can look and perform beautifully for decades.

Not sure if your stone needs maintenance or restoration? Contact Stone Surface Solutions for a professional assessment.