What salt air actually does indoors
On the Atlantic side at Grenville, Bathway, Levera and La Sagesse, doors and windows stay open because the breeze is the cooling. What comes in with it is a fine, faintly salty film of airborne moisture and grit. On the sheltered Caribbean side at Grand Anse and the Carenage, the load is lighter but never zero. The salt itself will not attack good limestone the way it attacks steel, but the grit it carries acts as an abrasive underfoot, and a floor that is only ever mopped is being polished with sand. The difference between the coasts is real but it is a matter of degree, not of kind. Everything about a coastal floor is easier if grit is removed before water touches it, and harder if it is not. That single habit does more than any product on the shelf.
The weekly routine
Almost every problem people bring us is solved by sequence rather than product:
- Sweep or vacuum first, so grit is removed instead of dragged around by a mop.
- Wash with clean warm water and a neutral, stone-safe cleaner at the mild end of the dose.
- Rinse with fresh water, because cleaner residue is what leaves the dull film people blame on the stone.
- Dry the busy paths and any area near an open door rather than leaving standing water.
- Put mats at the two doors that take the most sand, and shake them out often.
The routine takes minutes and it is the same for every stone we send out, whether the job is a villa at Grand Anse or a single room. If you are still choosing, this advice applies equally to everything in our tile stock for Grenada.
What not to put on limestone
The damaging products are the ones sold as powerful, and the harm is usually done in a single enthusiastic afternoon:
- Vinegar, lemon and any acidic bathroom cleaner, which etch a calcareous stone on contact.
- Bleach used neat as a routine wash, which strips finishes and marks joints.
- Scouring powders and wire pads, which scratch a honed surface permanently.
- Pressure washing indoors or on soft joints, which drives water where it should not go.
If an acid has already etched a patch, the mark is physical rather than chemical: the surface has been eaten slightly and needs a stone specialist to refinish it, not a stronger cleaner. Stopping the source matters more than treating the damage, so move the bottle that caused it.
What a sealer can and cannot do
An impregnating sealer soaks in and slows absorption, buying you time to wipe a spill before it becomes a stain. It is not a coating, not a waterproof layer and not a substitute for cleaning. Coastal houses tend to need resealing on the wet paths sooner than the quiet rooms, so treat the floor in zones rather than all at once. Try any new cleaner or sealer on a hand sample to test cleaners before it touches the laid floor. Test absorption before you reach for a tin. Drop a little water on the busiest area: if it beads and sits, the floor is still protected; if it soaks in and darkens the stone quickly, that zone is ready. Apply thinly and wipe off the excess before it dries.
The wet season and biological growth
From June through December the rain is heavy and frequent, and the highlands take a great deal more of it than the coastal belt. Damp shaded surfaces near open doors, under planters and along gallery edges are where algae and moss establish themselves first. Deal with growth early with a soft brush and a stone-safe product, keep planters on feet so water can escape underneath, and cut back vegetation that keeps a corner permanently in shadow. Airflow does more than any bottle. A house above Grand Etang, where annual rainfall can reach two and a half times the coastal figure, is on a different maintenance schedule from one at Point Salines. Check the gutters before the season starts and again at its peak.
Carriacou and Petite Martinique run drier
The sister isles are a different maintenance climate. They receive far less rain than mainland Grenada and can face genuine drought in the dry season, so biological growth is less of an issue while dust, salt and water conservation are more of one. Stone for those islands travels on a separate cargo-boat leg into Tyrrel Bay after clearing at the Port of St George’s, so plan restocks and repairs with that extra sailing in mind. Tyrrel Bay is Carriacou’s only port, so allow a short road leg on the island once the cargo boat has discharged. Keep a small stock of spare tiles and your chosen cleaner on the island rather than ordering both at short notice.
A year-round plan that works
Written down, the whole routine is short. Owners who follow it rarely need anything stronger. Write it on a card and leave it with whoever cleans the house, because most of the damage we are asked about began with a well-meant product bought in a hurry:
- Weekly: sweep, wash with a neutral cleaner, rinse and dry the wet paths.
- Monthly: check joints, planter bases and thresholds for early growth or standing water.
- Start of the wet season: clear gutters and drains, and inspect gallery edges.
- Every year or two: test absorption on the busiest area and reseal only where it is needed.
A limestone floor here does not need protecting from the island so much as keeping in step with it.