Granite & Marble Sealing
Water Test, Sealer Types, How Often & Cost (2026)

What sealing does, and what it does not

Natural stone is full of tiny pores. On a kitchen top, cooking oil, turmeric, curry paste, soy sauce and coffee find their way into those pores and leave a dark patch that does not wipe off. On a floor, water, mop water with detergent and spilled drinks do the same. A sealer slows that down.

A penetrating sealer soaks into the top of the stone and lines the pores so liquids sit on the surface for longer. That gives you time to wipe a spill before it stains. ClickBina's slab fabrication guide puts it plainly: sealing does not make stone stain-proof or acid-proof; it buys time.

• It helps with: oil, sauces, coffee, tea and water rings soaking in.
• It does not help with: acid etching on marble (lime, vinegar, tomato, acidic cleaners), scratches, chips, or stains that are already in the stone.
• It is not needed on: quartz, sintered stone and porcelain, which are non-porous.

Which stones need it

Light-coloured stone shows stains far more than dark stone, so a white or cream granite or marble in a Malaysian kitchen needs the most attention. ClickBina's granite price guide and countertop comparison cover the trade-off between natural stone and the non-porous alternatives.

The water-drop test: does it need sealing now?

You do not need a calendar to know when to re-seal; the stone tells you. ClickBina's marble flooring guide gives the sign: water that darkens the stone instead of beading means the seal has worn.

1. Pick a spot that gets heavy use: next to the hob, beside the sink, the entrance of a floor.
2. Drip a few drops of water onto the clean, dry stone.
3. Watch for a few minutes. If the water stays as beads and the stone under it does not change colour, the seal is fine.
4. If the stone darkens under the drops, the water is soaking in. It is time to re-seal.
5. Wipe the spot dry; the dark mark fades as the water evaporates.

Test the busiest areas more often than the rest. A kitchen top usually wears out its seal near the hob and sink long before the far corner.

How often to re-seal

ClickBina's own guides give a range rather than a single number, because use matters more than the calendar. The slab fabrication guide says granite wants sealing roughly once a year and marble every six to twelve months; the countertop comparison says once or twice a year for granite in a busy Malaysian kitchen, where oil and spices are aggressive staining agents. A guest bathroom vanity may go much longer.

Two events always call for sealing: when the stone is new, and after it has been honed or polished, because honing opens the surface. Use the water test to decide everything in between.

Impregnating vs topical sealers

For kitchen tops and floors, ask for a penetrating or impregnating stone sealer, and check that the product is suitable for food-contact surfaces once cured. Colour-enhancing sealers that darken the stone exist too; test them on an offcut or a hidden corner first.

How a stone top or floor is sealed

Sealing is simple, but each step matters. The product label sets the waiting and curing times, so follow it rather than a general rule.

1. Remove stains first. Sealing over a stain locks it in. Oil stains usually need a poultice; ClickBina's countertop repair guide covers stains, chips and dull patches.
2. Clean with a neutral stone cleaner and rinse. No vinegar, lime or bleach.
3. Let the stone dry fully. Moisture in the pores stops the sealer going in; an overnight dry is common.
4. Apply thinly and evenly with a cloth, brush or applicator pad, working in small areas.
5. Wipe off the excess before it dries on the surface, or it leaves a hazy, sticky film.
6. Apply a second coat if the stone soaked up the first quickly, then let it cure before use.

On a floor, sealing usually follows honing or polishing. ClickBina's terrazzo restoration guide shows where sealing sits in that sequence.

What sealing and related work costs

ClickBina publishes no stand-alone sealing rate. These figures come from ClickBina guides that price sealing as part of a polishing job, plus the replacement cost of the stone it protects (indicative 2026, Klang Valley).

A small kitchen top is usually priced as a minimum job rather than per sq ft. The cost of sealing is small next to the cost of replacing a stained slab.

Daily care that keeps the seal working

• Wipe oil, turmeric, sauces, wine and coffee straight away; the sealer only buys time.
• Clean with a pH-neutral stone cleaner. Acidic, bleach and strong alkaline cleaners wear sealers out faster.
• Never use scouring pads or powders on polished stone.
• Use trivets and chopping boards; keep acidic food off marble.
• Do the water test every few months at the hob, the sink and the main walkway.

What to send on WhatsApp

Stone sealing and polishing are quoted from the stone type and the area. WhatsApp us your job details for a quote: the area and property type, granite or marble, countertop or floor, the rough size, and whether there are stains, etching or scratches to deal with first. We reply within the hour, and the price we agree is a flat price with no hidden charges.

Sources & methodology

• ClickBina slab fabrication and countertop comparison guides — porosity, how often to seal, what sealing does not do.
• ClickBina marble flooring guide — the water-beading sign that the seal has worn.
• ClickBina marble polishing cost guide — sealer after restoration and polishing rates.
• ClickBina granite price, countertop repair and terrazzo restoration guides — stone prices, stains and the floor sequence.

How we estimated prices: every RM figure on this page is quoted unchanged from the ClickBina guides named above; they are indicative Klang Valley ranges for 2026.