Choosing Paint for Singapore Buildings: Interiors, Exteriors and Wet Areas
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Repainting a hotel corridor, an office pantry or a building façade looks simple until the paint starts peeling, blistering or growing mould a few months later. In Singapore's heat, humidity and heavy rain, the right paint system matters as much as the colour. This guide helps facility managers, renovation contractors and hospitality buyers choose paint by surface and location, and plan the job so the finish lasts.
Think in systems, not tins
A durable paint job has three layers:
- Surface preparation: cleaning, repairing and removing loose or flaking paint.
- Primer or sealer: to bind the surface and help the topcoat adhere.
- Topcoat: usually two coats of the finish paint.
Skipping the primer or applying paint to a damp or chalky wall is the most common reason for early failure. Always check the manufacturer's data sheet for the recommended primer and recoat times.
Choosing paint by location
| Location | What to look for | Finish |
|---|---|---|
| Offices, meeting rooms, guest rooms | Water-based interior emulsion, low odour, washable | Matt or eggshell to hide wall imperfections |
| Corridors, lift lobbies, back-of-house | Scrubbable, high-durability interior paint | Eggshell or satin for easier cleaning |
| Pantries, toilets, kitchens | Anti-fungal and moisture-resistant interior paint | Satin or semi-gloss |
| External walls and façades | Exterior weather-resistant paint with UV and algae resistance | Matt or low sheen |
| Metal railings, gates, pipework | Anti-rust primer plus enamel or protective coating | Gloss or semi-gloss |
| Floors in plant rooms and car parks | Floor paint or epoxy coating rated for traffic | Depends on slip resistance needed |
Interior paint: odour, washability and downtime
For occupied buildings such as hotels, offices and clinics, water-based paints are usually preferred because they have lower odour and dry faster than solvent-based ones. That helps you return rooms to use sooner. If your project or client has sustainability requirements, ask whether the product carries a recognised environmental label such as the Singapore Green Label, and keep the certificate with your project documents.
Sheen affects both look and maintenance. Matt finishes hide bumps and patching but mark more easily. Eggshell and satin are easier to wipe clean and suit high-traffic walls.
Exterior paint: built for sun and rain
External walls face strong UV, driving rain and constant humidity. Choose a paint specified for exterior use with resistance to fading, algae and fungus. Elastomeric or crack-bridging exterior coatings can help on walls with fine hairline cracks, but larger cracks should be repaired first with a suitable filler or sealant.
Timing matters
- Paint on a dry surface. Check the manufacturer's guidance on minimum drying time after rain.
- Avoid painting when heavy rain is expected before the paint has dried.
- On new plaster or concrete, allow it to cure and use an alkali-resistant sealer.
Wet areas and mould
Mould in toilets and pantries usually comes back if you paint over it. Clean the area with a suitable fungicidal wash, let it dry, then use an anti-fungal paint. Improving ventilation helps the result last. Joints around sinks, basins and tiles are better sealed with a sanitary sealant than painted.
Metal surfaces
Remove rust and loose paint with a wire brush or abrasive disc, apply an anti-corrosive primer soon after cleaning, then finish with an enamel or protective topcoat. Galvanised steel needs a primer suited to galvanised surfaces, or the paint may peel.
Estimating quantities
Coverage per litre is printed on the tin or data sheet and varies by product and surface. Measure the wall area, deduct large doors and windows, multiply by the number of coats, then divide by the stated coverage. Rough or porous surfaces absorb more, so allow extra. Order enough from the same batch to finish a wall or room in one go, to avoid slight colour variation.
What to ask the supplier
- The technical data sheet, with recommended primer, coverage, drying and recoat times.
- The Safety Data Sheet for storage and handling on site.
- Whether the product is suitable for the specific surface, such as new plaster, old gloss paint or galvanised steel.
- Pack sizes, and whether colours are tinted to order, since that can affect lead time.
Where to start
Browse paint and painting supplies, interior and exterior wall paint, and sealants and protective coatings for joints and metalwork.
Request a quotation
Planning a repaint or need to match an existing colour? Request a quotation. Send us the part number, a photo or the old label and a real person will quote within 24 hours. For technical questions about primers, coverage or surfaces, email cs@delight.com.sg.