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Calculating the right amount of paint

How to calculate the right amount of paint

Follow these five simple steps for measuring your room to make sure you buy the right amount of paint for your project.

What you’ll need:

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Measuring your space for painting
  • A metal tape measure

  • A step ladder

  • Pen and paper

  • A calculator


 

Overall room measurement

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Calculating the overall room measurement
  1. Width x height of walls = Overall room measurement

Overall door and window measurement

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Calculating the overall door and window measurement

2.  Width x height of doors and windows = Overall door and window measurement

3.  Overall room measurement – Overall door and window measurement = Wall space to be painted

4.  Wall space x 2 (for two coats) + a little for touch ups = Total

5.  Total ¸ m²/l number on your paint tin = Number of liters of paint you need for your project

These steps can also be used to calculate how much paint you need for ceilings and floors.

Pick the perfect paint for your project with our essential guide to finishes.

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