Wattyl paints, set up
The paint calculator starts on Wattyl I.D Advanced Low Sheen. Its data sheet gives coverage per coat of up to 16 M2/L, and the tins are the ones on its product page, 1, 4, 10 and 15 litres, the largest in white only. The starting bedroom needs about 6 litres to do walls and ceiling twice: one 4 litre and three 1 litre tins.
The menu also has I.D Advanced Matt, the Ceiling Anti-mould paint, and Solagard Low Sheen and Matt for exteriors. Solagard Matt is sold from 4 litres up.
Ceilings cover less
The I.D Advanced ceiling paint is rated at up to 14 M2/L rather than 16. When the ceiling is done in a separate paint in the calculator, give it 14 so the ceiling line isn’t short.
Tinted colours matter for the tins too: the data sheet lists the 15 litre container for white only, so for a tinted wall colour untick the 15 litre size and the calculator plans in 1, 4 and 10 litre tins.
Hot weather and porous walls outside
For Solagard, Wattyl asks for a minimum of two coats, and suggests thinning the first coat with up to 10% water in hot or windy weather or on very porous surfaces. A very porous wall is also where the full rated figure is least likely, so plan those walls lower.
Wattyl paints in the calculator: the range sold in Australia
| Paint | For | Coverage, as stated | Tins |
|---|---|---|---|
| I.D Advanced Low Sheen | Walls | up to 16 m² per litre | 15 L, 10 L, 4 L, 1 L |
| I.D Advanced Matt | Walls | up to 16 m² per litre | 15 L, 10 L, 4 L, 1 L |
| I.D Advanced Ceiling Anti-mould | Ceilings | up to 14 m² per litre | 15 L, 10 L, 4 L, 2 L |
| Solagard Low Sheen | Outside walls | up to 16 m² per litre | 15 L, 10 L, 4 L, 1 L |
| Solagard Matt | Outside walls | up to 16 m² per litre | 15 L, 10 L, 4 L |
What one room takes in each
Two coats. Rooms: 4 × 3.5 m room with 2.5 m walls, one door, one window, walls and ceiling (ceiling only for a ceiling paint). Outside: 8 × 10 m house with 5.2 m walls and two gables.
| Paint | Area | Paint, 2 coats | Buy |
|---|---|---|---|
| I.D Advanced Low Sheen (room, 16 m²/L) | 48.6 m² | 6.1 L | 1 × 4 L + 3 × 1 L (fewer cans: 2 × 4 L) |
| I.D Advanced Matt (room, 16 m²/L) | 48.6 m² | 6.1 L | 1 × 4 L + 3 × 1 L (fewer cans: 2 × 4 L) |
| I.D Advanced Ceiling Anti-mould (ceiling, 14 m²/L) | 14 m² | 2.0 L | 1 × 2 L |
| Solagard Low Sheen (house, 16 m²/L) | 189.8 m² | 24 L | 2 × 10 L + 1 × 4 L (fewer cans: 1 × 15 L + 1 × 10 L) |
| Solagard Matt (house, 16 m²/L) | 189.8 m² | 24 L | 2 × 10 L + 1 × 4 L (fewer cans: 1 × 15 L + 1 × 10 L) |
Coverage per coat for the Wattyl range sold in Australia, from the maker's pages linked above, checked September 2026. Wattyl and its product names are its owner's trademarks, used only to describe the products; Meadow Tools is not affiliated with or endorsed by Wattyl.