Quick answer: Latex (water-based acrylic) is the right default for most interior walls and ceilings, and it is also the common choice for exterior siding. Alkyd (oil-based) is harder, levels smoother and suits some trim and doors, but it dries slower, smells strong, cleans up with solvent and yellows over time.
Latex: the everyday choiceWater clean-up, low odour, quick recoat, stable colour.
Alkyd: the hard finishLevels smoothly and cures very hard. Good for trim and doors where a glassy finish matters.
Cleanup and safetyLatex cleans with water. Alkyd needs solvent and better ventilation.
AgeingAlkyd tends to yellow over time, especially in low light. Latex holds its colour better.
Paint is chosen by the surface, the room and the way it will be cleaned.
Paint is chosen by the surface, the room and the way it will be cleaned.
Which paint fits your surface?

Mostly walls, ceilings, siding or scrubbed surfaces? Latex. Mostly trim, doors or a glassy finish? A durable latex enamel, or alkyd where the product and the local rules allow it.

Latex and alkyd side by side

Property Latex (acrylic) Alkyd (oil-based)
Base Water-based acrylic Oil or resin-based
Clean-up Soap and water Mineral spirits or solvent
Odour Low Strong, needs ventilation
Drying Touch-dry in about an hour; recoat in a few hours Slower; recoat usually takes much longer
Hardness and levelling Good; levelling improving Very hard; levels very smooth
Colour over time Holds colour well Yellows, especially in low light
Best use Walls, ceilings, siding, most interiors Trim, doors, some cabinetry where a hard finish matters

Common mistakes with each type

Using alkyd on fresh drywall

Alkyd on new drywall or fresh plaster can cause adhesion and cracking issues. Use a compatible primer and let the surface cure first.

Latex over an oil-stained surface

Stains from oil, smoke or water can bleed through latex. Use a stain-blocking primer, and check that the primer suits the stain.

Skipping the sanding between coats

Both types benefit from light sanding between coats on trim. It removes dust nibs and gives the next coat a clean key.

How we choose, the Real Method way

1
Read the surface

We check the material, the condition and the moisture before choosing the paint.
2
Match the wear

We pick the sheen and the paint type for how the room is used and cleaned.
3
Prime for the job

The primer is chosen to suit the surface, the stain and the paint on top.
4
Test a patch

We test the colour and the finish on a small area in the real light.
5
Document it

You get the product name, sheen and colour code in writing for future touch-ups.

Frequently asked questions

Can I use latex on trim?

Yes, with a durable latex enamel designed for trim and doors. It gives a good finish and cleans easily. Where the hardest, smoothest finish is needed, an alkyd is sometimes chosen, depending on the product and the local rules.

Is latex paint durable enough for a busy house?

Yes. Choose a scrubbable grade in a satin or eggshell sheen for high-traffic walls, and a semi-gloss for kitchens and bathrooms.

Why does old paint turn yellow?

Oil-based and some alkyd paints yellow with age and low light. Latex paints generally hold their colour better, but any paint can discolour in smoke, heat or sun.

Related searches: latex vs alkyd paint, latex vs oil paint, best paint for trim, water based vs oil based paint, interior paint types

Related: Painting services, with the decisions for sheen, colour and primer.

Keep plugging in: what to read next

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