Roof tile repairs (slipped / broken tiles, ridge, verge): calculator for UK builders
Answer the measurements this calculation needs and JobBosh works out the materials with wastage and pack rounding, the labour hours by role, the plant, the waste and the site needs - then prices them from your own figures, a supplier's quotation or a dated price you record. Free, no account needed to start.
What it works out
- Material: Replacement tiles to match existing
- Labour: Tile, ridge and verge repairs
- Plant: Mobile tower hire
- Waste: Broken tiles, old mortar
The questions it asks
| Question | Unit / choices | Required? | Help |
|---|---|---|---|
| Tiles to replace | nr | required | |
| Ridge / hip to re-bed | m | optional - default 0 (labelled assumed) | |
| Verge to re-point | m | optional - default 0 (labelled assumed) | |
| Storeys | nr | optional - default 2 (labelled assumed) | |
| Access | one of: ladder short, tower, scaffold | optional - default tower (labelled assumed) |
The norms behind it, with their sources
Coverage, productivity and wastage defaults you can edit; each carries where it comes from and is shown as assumed until your own benchmark replaces it.
| Norm | Value | Source | Tier |
|---|---|---|---|
| Replace a tile (groups of a few) | 0.2 hr/tile | trade practice | assumed |
| Re-bed ridge per metre | 0.6 hr/m | trade practice | assumed |
| Re-point verge per metre | 0.4 hr/m | trade practice | assumed |
| Mortar per metre of ridge | 8 kg/m | trade practice | assumed |
A worked example
Answers used: Tiles to replace 2 nr; Ridge / hip to re-bed 0 m; Verge to re-point 0 m; Storeys 2 nr; Access tower. These are the recipe's own quantities for those answers - the prices are yours, the supplier's or a quotation's, never a figure typed on a web page.
| Kind | Line | Quantity | How it is worked out |
|---|---|---|---|
| material | Replacement tiles to match existing | 2.2 nr 3 x nr - each | 2 tiles +10 % |
| labour | Tile, ridge and verge repairs | 0.4 hr | 2 x 0.2 h + 0 m x 0.6 h + 0 m x 0.4 h |
| plant | Mobile tower hire | 1 hire-day | hire-days = labour days |
| waste | Broken tiles, old mortar | 0.01 m3 | 2 x 0.003 + 0 x 0.01 m3 |
Labour on this example: about 0.4 hours across the roles; at your rates it becomes money.
Site questions this work raises: Access equipment and temporary works, Parking and traffic, Site access and neighbours.
Working at height: the access choice is a safety decision, not a cost line.
Then what
Price the lines from your crew rates and your material prices (each with its source and date), answer the site questions (parking, skip, welfare, power, water, protection), let JobBosh draft the supplier enquiries you approve, and issue a branded quotation your customer accepts on a secure link. Guest work is kept for 14 days; a free account keeps it for good.
Start a roof tile repairs (slipped / broken tiles, ridge, verge) job now