# Dulux Once Gloss

Woodwork paint · Dulux

Dulux Once Gloss covers up to 12 m² a litre and takes 1 coat, by Dulux's own figures.
Source: Dulux, Dulux Once Gloss product page, read 11 October 2026.

What it is for, in the maker's words: “to give a perfect gloss finish on interior and exterior primed or painted wood or metal surfaces” (Dulux Once Gloss product page, read 11 October 2026).

The woodwork of a 3 × 4 m room (one face of a door and its architrave, a window's frame and board, and the skirting: 3.73 m²) needs 0.342 L: 1 × 750 ml to buy.

## Coverage

Dulux states up to 12 m² a litre. The maker's words: “Up to 12m2/litre”.
- Bare, rough or absorbent surfaces: A maker's coverage is their best case, on a smooth sealed surface: bare, rough or absorbent wood takes more.
- A strong change of colour: Dulux says: “Failure to do so may require a second coat, particularly when painting over a darker colour with a lighter topcoat”. Each extra coat is the paint of one coat again.
- Waste and touch-ups: The room table adds 10% for what stays in the tray and on the brush and for touching up: BuildBatch's generic example, not the maker's. The tin-by-tin figures add nothing.
- Doors, windows and skirting of another size: The table counts one door, one window and skirting 119 mm high with an architrave 69 mm wide, the planner's typical sizes. Panelled doors, deep skirting, more doors or a radiator take more: the planner counts your own.

## Coats

Dulux gives 1 coat for Dulux Once Gloss, in these words: “Failure to do so may require a second coat, particularly when painting over a darker colour with a lighter topcoat”.

## Tin sizes

| Tin | One coat |
|---|---|
| 750 ml | up to 9 m² |
| 1.25 L | up to 15 m² |
| 2.5 L | up to 30 m² |

Arithmetic on the maker's figure: the litres in the tin times the coverage per litre, with nothing added for waste.

## How much for the woodwork of a room

| Room | In feet | Woodwork to paint | Paint needed | Tins to buy |
|---|---|---|---|---|
| 2.5 × 3 m | 8.2 × 9.8 ft | 3.37 m² | 0.309 L | 1 × 750 ml |
| 3 × 3 m | 9.8 × 9.8 ft | 3.49 m² | 0.32 L | 1 × 750 ml |
| 3 × 4 m | 9.8 × 13.1 ft | 3.73 m² | 0.342 L | 1 × 750 ml |
| 4 × 4 m | 13.1 × 13.1 ft | 3.97 m² | 0.364 L | 1 × 750 ml |
| 4 × 5 m | 13.1 × 16.4 ft | 4.2 m² | 0.385 L | 1 × 750 ml |

Each room has one internal door and one window of 1.2 × 1.1 m: one face of the door, its architrave 69 mm wide, a strip round the window and skirting 119 mm high; 1 coat; 10% extra for waste, BuildBatch's generic example. Worked out by the planner when the site was built.

Start a list for a 3 × 4 m room with this paint's figures: https://buildbatch.co.uk/start/#v=1&job=paint&walls=none&ceiling=none&woodwork=paint&trim=none&units=m&length=4&width=3&height=2.4&door=0.762x1.981&window=1.2x1.1&surface=sound&subfloor=unsure&ground=unsure&fitting=unsure&woodpaint=custom&woodpaint.coats=1&woodpaint.coverage=12&woodpaint.extra=10&woodpaint.tins=0.75,1.25,2.5&woodpaint.examples=extra&end=22

## Where to buy it

The page has the shops' own searches for it, and any link there that is paid for is marked Ad: https://buildbatch.co.uk/products/dulux-once-gloss/#where-to-buy. BuildBatch sells nothing and compares no prices.

## Questions

**How much does a litre of Dulux Once Gloss cover?** Dulux states up to 12 m² a litre for Dulux Once Gloss (Dulux Once Gloss product page, read 11 October 2026). A maker's coverage is their best case, on a smooth sealed surface.

**How much does a 2.5 litre tin of Dulux Once Gloss cover?** At the maker's figure a 2.5 L tin covers up to 30 m² in one coat. That is the litres times the coverage per litre, with nothing added for waste.

**How many coats does Dulux Once Gloss need?** Dulux gives 1 coat for Dulux Once Gloss, in these words: “Failure to do so may require a second coat, particularly when painting over a darker colour with a lighter topcoat”.

**How much Dulux Once Gloss for the woodwork of a 3 × 4 m room?** The woodwork of a 3 × 4 m room (one face of a door and its architrave, a window's frame and board, and the skirting: 3.73 m²) needs 0.342 L: 1 × 750 ml to buy. The skirting is 119 mm high and the architrave 69 mm wide, the planner's typical sizes, 1 coat, with 10% extra for waste.

**What is Dulux Once Gloss for?** Dulux says: “to give a perfect gloss finish on interior and exterior primed or painted wood or metal surfaces” (Dulux Once Gloss product page, read 11 October 2026).

**What tin sizes does Dulux Once Gloss come in?** The catalogue lists 750 ml, 1.25 L and 2.5 L. A shop may not stock every size.

## Where the figures come from

- Dulux, Dulux Once Gloss product page (https://www.dulux.co.uk/en/products/dulux-once-gloss): coverage, coats and what it is for, read 11 October 2026.

Written with AI tools; not yet checked by a tradesperson. Follow the tin's own instructions.

The page: https://buildbatch.co.uk/products/dulux-once-gloss/