THE ESTIMATING ANSWER
Estimate interior skim coating by measuring the defined two uneven wall planes, separating product allowances from labour and setting out the work sequence and exclusions. This fictional Brighton example uses 7 itemised lines totalling £3,630.11; its exact quantities and rates appear in the paired app PDF.
The worked job is two uneven wall planes in Brighton. The written scope is: Apply a skim finish to two prepared interior wall planes for a paint-ready surface, excluding major substrate reconstruction. Its matching itemised example shows how that description becomes quantities, allowances and a PDF. These figures are fictional inputs for learning the method, so check the real site, specification and supplier or subcontractor costs before quoting.
1. Define the measured job
Apply a skim finish to two prepared interior wall planes for a paint-ready surface, excluding major substrate reconstruction. Measure actual wall surface and record bowing, existing texture and edge conditions. Record the measurements and existing condition in the estimate before turning quantities into line items. The scope should make clear why this is a separate project from a broader renovation or maintenance quote.
Measure for this job: Measure actual wall surface and record bowing, existing texture and edge conditions. Record the measured basis next to the relevant cost lines, since a room count, fitted length and purchased product quantity may each use a different unit.
2. Build a product and labour schedule
Identify bonding preparation and chosen finishing compound separately from final painting. This example has 7 distinct lines, including protection and surface check, bonding preparation, skim material allowance. Use actual supplier prices and labour inputs for a customer job; the displayed amounts are fictional document inputs.
Choose before pricing: Identify bonding preparation and chosen finishing compound separately from final painting. Keep a named allowance when the selection is open, and replace it once the actual product and delivery terms are known.
3. Sequence the work and handoffs
Agree the required finish under realistic site lighting before application and sanding. Show which task depends on access, a selected product or another trade. If that dependency is still open, label the price preliminary and identify the information needed before a firm quote.
Plan the handoffs: Agree the required finish under realistic site lighting before application and sanding. State which stage needs access or inspection before the next can begin, especially if a concealed condition might stop the work.
4. Set a change boundary
Unsound previous coating or large deviations can require removal or board replacement. The example excludes structural wall straightening, new plasterboard or finish painting. Record the discovery, agree the revised work and update the estimate before adding it to the job.
Change trigger: Unsound previous coating or large deviations can require removal or board replacement. If this happens, write down the revised quantity and responsibility before adding an item to the customer estimate.
Worked project calculation
The paired PDF has 7 cost lines. For example, Bonding preparation is 39 sq m × £17.22 = £671.58; First pass application is 39 sq m × £34.44 = £1,343.16. Each amount is the stated quantity multiplied by its unit rate. Recheck whether a line describes installed work, a material purchase allowance or a distinct visit before changing its quantity.
| Work item | Quantity | Unit rate | Amount |
|---|---|---|---|
| Protection and surface check | 1 lump sum | £132.00 | £132.00 |
| Bonding preparation | 39 sq m | £17.22 | £671.58 |
| Skim material allowance | 1 lump sum | £200.00 | £200.00 |
| First pass application | 39 sq m | £34.44 | £1,343.16 |
| Finish pass application | 39 sq m | £25.83 | £1,007.37 |
| Sanding and defect check | 1 lump sum | £196.00 | £196.00 |
| Waste and final clean | 1 lump sum | £80.00 | £80.00 |
| Illustrative total | £3,630.11 | ||
Adding the 7 exact line amounts gives £3,630.11. The PDF uses a 0% tax input and no markup solely to display this arithmetic. Decide the appropriate tax, overhead and profit treatment for an actual job; the fictional rates are not local averages or price recommendations.
Scope and price boundaries
Apply a skim finish to two prepared interior wall planes for a paint-ready surface, excluding major substrate reconstruction.
Outside this example: No structural wall straightening, new plasterboard or finish painting.
The role in this brief is painter. Confirm who supplies the selected products, makes the site safe, removes waste and signs off the work. Where opening up reveals a different condition, document it and issue a revised scope and price rather than silently extending the base estimate. Also check access, drying or curing time, and the client handoff described in the work sequence.
Before you send
- Measure actual wall surface and record bowing, existing texture and edge conditions.
- Identify bonding preparation and chosen finishing compound separately from final painting.
- Agree the required finish under realistic site lighting before application and sanding.
- Unsound previous coating or large deviations can require removal or board replacement.
Compare the written scope with every line in the interior skim coating PDF example. The preview below is the first page of the actual app export; open the PDF to inspect its full scope, notes and amounts.
Questions about this job
Which quantity controls this interior skim coating estimate?
Measure actual wall surface and record bowing, existing texture and edge conditions.
When should this interior skim coating quote be revised?
Unsound previous coating or large deviations can require removal or board replacement. No structural wall straightening, new plasterboard or finish painting.
FROM SITE NOTES TO AN ITEMISED PDF
Build your own interior skim coating estimate
Enter the project boundary and your measured lines in Estimates on iPhone or Android. Edit the fictional quantities and rates, add the actual business and client details, then inspect the PDF before sharing it.
