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Good finishing shows in light, shadow and every detail

Interior Skim Coat Calculator

Estimate the indicative cost of skim coating walls and ceilings, including surface preparation, priming, Q1-Q4 finish level and material class.
This calculator is for those who want to understand the cost of a truly even, refined base for further finishing works.
A perfect wall does not start with paint. It starts with the substrate.

Walls, ceilings and finish level in one place

Estimate Skim Coat Scope

Enter rooms, wall height and scope. The calculator will estimate the billable surface area and the net and gross cost.
Treat the result as a reference point before a conversation and an individual quote.

Wall and ceiling surface area
  • Walls - floor area and room height are converted into an indicative wall surface area.
  • Surface adjustment - the calculator applies a simplified adjustment for typical openings, recesses and room layout.
  • Ceilings - you can leave them outside the scope or add them as a separate work item.
Pricing elements
  • Substrate preparation - no preparation, developer standard, washing and minor repairs, or comprehensive preparation.
  • Priming - a separate cost for surfaces that require stabilisation before skim coating.
  • Q1-Q4 finish level - from basic levelling to a more demanding finish for light-sensitive surfaces and high-quality painting.
  • Material class - your own material or Comfort, Prestige or Luxury class materials.
How to read the result
  • Gross and net cost - the result shows the full indicative value and a breakdown of the key items.
  • Price per m² - the average rate makes it easier to compare simple levelling with a higher finishing standard.
  • Indicative estimate - the final cost depends on unevenness, cracks, substrate type, corners and the amount of sanding.
1

Rooms and heights

Enter the floor area and wall height. The calculator will estimate wall surface area with an adjustment for openings and layout.

How does the conversion work? For simplicity, the calculator assumes a room close to a square and applies a 0.9 adjustment for openings, recesses and a typical wall layout.
2

Substrate and skim coat standard

Here you set the key cost elements: preparation, priming, Q standard and material class.

3

Skim coat on ceilings

Ceilings are calculated separately because they require different work and a different pace.


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