Every material changes. The only question worth asking at specification is whether it will look better or worse in ten years.
There are two kinds of material. One is at its best on the day it is installed and declines from there. The other starts well and improves — it gains a surface, a depth, a record of use. Both cost money. Only one of them is still a pleasure a decade later.
This is not an argument for expensive materials. Some of the best-ageing surfaces are cheap, and some of the worst are not.
Kota, granite, limestone and local stone wear into a soft sheen underfoot. Honed finishes hide wear better than polished ones and are safer wet.
Darkens and deepens. Scratches on solid wood are repairable, which is an underrated property in a house with children.
Breathes, ages softly, patches invisibly — and in older buildings it is the correct technical choice, not merely the pretty one.
No finish to fail. It weathers instead of degrading, which is a different thing entirely.
Develop a patina that most people pay to imitate. Hardware in solid brass survives decades of the humidity that destroys plated alternatives.
Board-marked or well-finished concrete ages honestly, provided cover and curing were taken seriously on site.
High-gloss finishes on anything walked on or touched — the first scratch is the end of the effect and there is no recovery. Thin veneers and laminates on exposed edges, where the edge is where the wear is. Plated hardware in humid or coastal air, which loses its coating and then corrodes. Sealants and adhesives doing structural work a fixing should have done. And external paint chosen for its colour card rather than for the wall's exposure.
In coastal and humid regions — Chennai most of all — salt and moisture rule out a great deal of the standard specification. Hardware, fasteners, railing metal and window systems all need to be selected for it, and the cheapest option at tender is routinely the most expensive over ten years. Inland and drier sites are more forgiving, and the enemy becomes ultraviolet and thermal movement instead.
Every material has a maintenance schedule; the only choice is whether it is disclosed. Oiled wood wants re-oiling. Lime wants re-limewashing occasionally. Stone wants resealing in wet areas. If a specification is presented as maintenance-free, ask what happens in year seven — because something does.
