- 01 Sep 2023
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# Painting Formulas

- Updated on 01 Sep 2023
- 3 Minutes to read

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Before reading this article, ensure you have read Measurement - Parts & Labour and Using Formula within Groundplan articles to aid in understanding the following Formula examples.

- Doubled-sided and single-sided walls would need separate Measurements as the Parts and Labour are different.
- If there is more than one ceiling height on the Project, each height must be a separate Measurement with the correct Formula, Parts and/or Labour applied.

📝 The Formula values provided in this article are for example purposes only.

Term | Explained |
---|---|

`count` | total counts |

`len` | total metres measured |

`area` | total square metres measured |

`count, len or area / x` | total count/length/area divided by an `amount` |

`count, len or area * x` | total count/length/area multiplied by an `amount` |

`ceil(x)` | rounding up a decimal value to the next whole number |

## Internal Walls

Example Parts for painting a single-sided wall with a 2.4 high ceiling Length Measurement:

Part | Explanation | Formula | UMO |
---|---|---|---|

Undercoat | How many litres are required when the ceiling is divided by an averaged `2.4m high` `1 litre based on covering 6m2` | `ceil(len*2.4/6)` | Litres |

Undercoat (20L bucket) | How many 20L buckets are required when the ceiling is divided by an averaged `2.4m high` divided by a `1 litre based on covering 6m2` `20L bucket` | `len*2.4/6/20` | Buckets |

Top coat | How many litres are required when the ceiling is divided by an averaged `2.4m high` multiplied by `1 litre based on covering 6m2` `2 coats required` | `ceil(len*2.4/6*2)` | Litres |

Top coat (20L bucket) | How many 20L buckets are required when the ceiling is divided by an averaged `2.4m high` multiplied by `1 litre based on covering 6m2` divided by a `2 coats required` `20L bucket` | `len*2.4/6/*2/20` | Buckets |

Cornice | How many measured`total metres` | `len` | m |

Skirting | How many measured`total metres` | `len` | m |

Total wall area | Total length measured multiplied by the for the total m2`height of 2.4m` | `len*2.4` | m2 |

## Exterior Cladding

Example Parts for painting exterior cladding using an Area Measurement:

Part | Explanation | Formula | UMO |
---|---|---|---|

Undercoat | How many litres are required for the area measured divided by an averaged `1 litre based on covering 6m2` | `ceil(area/6)` | Litres |

Undercoat (20L bucket) | How many 20L buckets are required for the area measured divided by an averaged divided by a `1 litre based on covering 6m2` `20L bucket` | `area/6/20` | Buckets |

Top coat | How many litres are required for the area measured divided by an averaged multiplied by `1 litre based on covering 6m2` `2 coats required` | `ceil(area/6*2)` | Litres |

Top coat (20L bucket) | How many 20L buckets are required for the area measured divided by an averaged multiplied by `1 litre based on covering 6m2` divided by a `2 coats required` `20L bucket` | `area/6/*2/20` | Buckets |

Total exterior wall | Total after door / windows were removed`exterior area measured` | `area` | m2 |

## Removals

There are different ways to calculate window and door removals using Parts with negative formula applied. All involve Grouping of Parts. Alternatively, if usage permits, use the Area Cut-Out Tool to remove windows from elevations Plans as well.

## Sliding Door Removal

Example Parts for the removal of a 2400mm x 2200mm sliding door using a Count Measurement:

Part | Explanation | Formula | UMO |
---|---|---|---|

Total wall area | Calculating of the total area covered by a sliding door `negative m2` to be removed from the `2400mm x 2200mm = 5.28m2` Total wall area Grouped Part | `-count*5.28` | m2 |

## Window Removal

Example Parts for the removal of any length window with a height of 1.2m using a Length Measurement:

Part | Explanation | Formula | UMO |
---|---|---|---|

Total wall area | Calculating a of the total area covered by a window with a height of `negative m2` to be removed from the `1.2m` Total wall area Grouped Part | `-len*1.2` | m2 |

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Download a PDF copy of Using Formulas within Groundplan here.

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