Dulux Wall Paint Calculator

Paint Calculation Formula:

\[ Paint (litres) = \frac{A_{wall}}{C} \times N \]

Wall Area (A_wall):

square metres

Coverage Rate (C):

square metres per litre

Number of Coats (N):

unitless

Paint Needed:

1. What is the Dulux Wall Paint Calculator?

The Dulux Wall Paint Calculator estimates the amount of paint needed to cover walls based on wall area, paint coverage rate, and number of coats required. It helps homeowners and professionals accurately plan paint purchases and avoid waste.

2. How Does the Calculator Work?

The calculator uses the paint calculation formula:

\[ Paint (litres) = \frac{A_{wall}}{C} \times N \]

Where:

\( A_{wall} \) — Total wall area to be painted (square metres)
\( C \) — Paint coverage rate (square metres per litre)
\( N \) — Number of coats required (unitless)

Explanation: The formula divides the total wall area by the coverage rate to determine paint needed per coat, then multiplies by the number of coats for the total requirement.

3. Importance of Accurate Paint Calculation

Details: Accurate paint calculation prevents over-purchasing (saving money) and under-purchasing (avoiding color mismatch from different batches). It also ensures proper project planning and budget management.

4. Using the Calculator

Tips: Measure wall area accurately, check the paint can for coverage rate specifications, and consider surface texture and porosity when determining number of coats. Always add 10-15% extra for wastage and touch-ups.

5. Frequently Asked Questions (FAQ)

Q1: How do I calculate wall area?
A: Measure height and width of each wall, multiply to get area per wall, then sum all wall areas. Subtract areas for windows and doors.

Q2: What is a typical coverage rate for wall paint?
A: Most interior wall paints cover 10-12 square metres per litre, but this varies by paint type, surface texture, and application method.

Q3: How many coats are usually needed?
A: Most walls require 2 coats for even coverage and color consistency. Dark colors or dramatic color changes may need 3 coats.

Q4: Should I include ceilings in the calculation?
A: Ceilings require separate calculation as they may use different paint types and have different coverage rates.

Q5: How much extra paint should I buy for wastage?
A: Add 10-15% extra for cutting in, roller wastage, and future touch-ups. Complex surfaces may require more.