Tinta para Paredes e Tetos
Calcular tinta necessária para paredes e tetos
🎨 Calcular Tinta Necessária
📐 Como Calculamos
A calculadora de tinta usa as seguintes fórmulas:
Margem de Segurança: Adicionamos 10% extra de tinta para desperdício, retoques e variações de cobertura.
Tamanhos Padrão: Porta = 2.0 m² (aprox. 0.9m × 2.1m), Janela = 1.5 m² (aprox. 1.2m × 1.2m)
🧮 Exemplo de Cálculo
For a 4 m × 3.5 m room with a 2.7 m ceiling, 1 door, 2 windows, 2 coats and paint covering 10 m²/L:
- Wall area = 2 × (4 + 3.5) × 2.7 = 40.5 m²
- Less door (2.0 m²) and windows (2 × 1.5 = 3.0 m²) = 35.5 m²
- Plus ceiling (4 × 3.5 = 14 m²) = 49.5 m² paintable
- Paint = (49.5 × 2 coats) ÷ 10 = 9.9 L
- With 10% margin ≈ 10.9 L (buy a 10 L plus a 2.5 L tin)
Uncheck the ceiling option if you are only painting the walls.
💡 Practical tips
- Always check the coverage printed on the tin — it ranges from 8 to 12 m²/L.
- Prime bare plaster or patched areas first so the topcoat covers evenly.
- Dark or strong colours often need an extra coat; choose 3 coats in those cases.
- Buy all tins in one batch and box-mix them for a consistent shade.
❓ Perguntas Frequentes
A standard room (4m × 3.5m × 2.7m ceiling) typically requires 8-10 liters of paint for 2 coats on walls and ceiling, depending on paint coverage (usually 8-12 m²/L).
Paint coverage (m²/L) indicates how many square meters one liter of paint can cover. Standard emulsion paint covers 8-12 m²/L. Check the paint can label for exact coverage.
Painting the ceiling is recommended for a complete refresh. If your ceiling is in good condition and doesn't need repainting, uncheck the "Paint ceiling" option to save paint.
Two coats are recommended for best results and even coverage. For dark colors or if painting over a very different color, consider 3 coats.