Plastering Quote Template: Skim, Render and Patch Lines With AI

A plastering quote should list each surface with its measured area in square metres and a rate for that job (skim, render or patch), then state preparation, protection, access, drying time, exclusions and payment terms. AI can draft the wording and spot gaps from your measurements, but the rates and totals should come from your own sheet, not the chatbot.

Plastering disputes tend to trace back to three gaps: the area, the condition of the surface, and what happens after the plaster goes on. A one-line quote ("skim lounge, render back wall, patch up, $5,000") leaves all three open. One job carries every figure below, from tape measure to finished page: a living room re-skim, a rendered rear wall with scaffold, and six patches left behind by rewiring.

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Measure first: the area rules that stop arguments later

Everything downstream depends on the area, so settle how you measure before you open a calculator.

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Measure each wall as length times height and each ceiling as length times width, and write the room name beside every number. Use gross areas, then deduct only large openings. A common rule, and the one used here, is to deduct openings over 2 square metres and ignore smaller ones, because skimming round a window takes about as long as skimming the glass area would have. Whatever you choose, print it on the quote: "Openings over 2 m² are deducted; smaller openings are not." That one sentence stops a customer with a tape measure from reworking your total. If your customers think in square feet, quote in square feet; the rules are identical, and 1 m² is about 10.76 sq ft.

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Reveals, the returns around windows and doors, are measured in linear metres and priced on their own line. They are slow, fiddly work that vanishes inside a square-metre rate if you let it.

Here are the measurements for the example job: a three-bedroom house where the customer wants the living room re-skimmed, the rear wall rendered, and six patches repaired after the electrician chased cables into walls. The figures are illustrative.

This is the step where AI is the wrong tool. A tape or laser measure and a sheet with formulas do it reliably. If your jobs run across several rooms, the room-by-room layout in the renovation quote template tutorial is a good frame for the measurement table.

Build each rate from your own costs, not a market average

A rate copied from a competitor's price list, or from a chatbot's "typical range", is the quickest way to lose money on a job you have won. Build each one from three numbers you already hold: what a day of your labour costs, how many square metres you finish in that day, and what the materials cost per square metre. Then add an uplift for the van, insurance, tools, admin and profit.

The figures are illustrative; replace them with numbers from your own job records. They assume one plasterer costing $240 a day on walls and ceilings and a two-person team costing $480 a day on render. The materials figure for skim comes from a data sheet: one widely used gypsum multi-finish plaster quotes about 10 m² per 25 kg bag at 2 mm, so a $14 bag works out at $1.40 a square metre. Read the sheet for the product you actually use, because coverage changes with thickness and with how absorbent the wall is. Consumables (bonding agent, scrim tape, beads, masking) are my placeholder of 65 cents.

Output per day is the number that moves most between jobs and the one most worth tracking. Time two or three jobs against the clock, including preparation, masking, clean-up and the second visit. A rate built on your best-day speed loses money on every ordinary day. The drywall pricing tutorial builds per-sheet and per-square-foot rates the same way for board-and-tape work, if you hang board as well as skim it.

Cross-check the result against bags, as you would in any area-priced quote such as the flooring quote template. Plaster is lost in the bucket and on the spot board. The living room needs 37.4 + 15.1 = 52.5 m², which is 5.25 bags at 10 m² each. Add roughly 10% for waste and you order six. Six bags at $14 is $84, or $1.60 a square metre against the $1.40 in the table. On a small job, price the whole bags rather than the average, or the materials line runs short.

Round each rate to a figure you can say aloud: $15, $18, $70. Rounding to the nearest dollar moves each rate by a few cents per square metre. What you must not let a chatbot round is the area or the total.

Skim lines: what each one assumes about the wall

A skim line is only as honest as the surface under it. The same 37.4 m² of wall is a quick job or a bad week depending on what the skim goes onto, so the line should say which. Put the assumption into the line itself rather than a footnote.

Three of those rows deserve a sentence more. A painted or glossy wall has little suction, so skim can fail to key to it. The usual answer is a bonding coat first, priced as a separate line so the customer sees why a painted room costs more than a bare one.

Skim also follows the wall rather than correcting it. A multi-finish coat is thin (the maker's data sheet gives 2 mm), so a wall that is out of true needs a base coat first, which is a different job at a different price. Say so, or the customer will expect a skim to flatten a bowed wall.

Older textured ceilings in some buildings contain asbestos. If there is any doubt, the quote should say that work on that surface starts only after a test result, and nobody should scrape or sand it to find out. That line costs you nothing and protects both of you.

Render lines: elevation by elevation, with scaffold priced apart

Render differs from skim in one way that matters for the quote: the weather is a party to the contract. Price it elevation by elevation, because each wall has its own access, sun and exposure, and write down what happens when the weather stops work.

Conditions. Manufacturers' data sheets for monocouche (one-coat, through-coloured) render set minimum application temperatures that vary by product: published minimums run from 5 to 8 degrees Celsius (about 41 to 46°F). They advise against rendering when frost is likely while the render cures, and ask for fresh render to be protected from rain, direct sun and wind for the first 24 to 48 hours, depending on the maker. Turn that into a clause: "Render is applied only in suitable conditions. Weather delays move the start date; they do not change the price." The concrete quote template tutorial has a similar weather clause for slabs that you can adapt.

Access and scaffold. A two-storey rear wall needs scaffold or a tower. Price it as its own line at the supplier's quote plus a handling percentage, state the hire period (two weeks in the example), and say what happens if bad weather keeps it up longer: "Extended hire is charged at the supplier's weekly rate." Scaffold buried inside the square-metre rate makes that rate look wrong beside a quote for ground-floor work.

Reveals, beads and finish. List the reveals in linear metres (14 m at $12 a metre in the example), the corner and stop beads, and the finish: "float finish" or "through-coloured, colour [name]". Do not promise a crack-free surface; say that fine hairline cracking can appear as render cures and is not a defect.

Protection. Say who protects what: "We mask windows and doors and sheet the patio. The customer moves plant pots and garden furniture at least 1 m clear of the wall."

The second visit. A two-coat system means at least two visits with a wait between coats, and for a few days the wall will look unfinished. Say so in the quote, and take the wait from the render maker's data sheet rather than from habit. A customer who expects a finished wall on Tuesday and sees bare base coat on Wednesday phones the competition.

Patch repairs: three sizes and a minimum visit charge

Patches are where plasterers lose the most money per hour, because set-up, mixing and travel cost the same as for a full wall. Price them per patch in size bands, and add a minimum visit charge for patch-only work.

In the example job, three small, two medium and one large patch come to $165 + $190 + $160 = $515. They are done in the same visit as the living room skim, so the minimum visit charge does not apply. If the customer had called you out for only the three small patches ($165), the minimum would lift the price to $180, and the quote should say that before the customer is surprised by it.

My rule of thumb, which you should replace with your own: more than three medium patches on one wall, or any patch over 1 m², is quoted as a re-skim of the whole wall. Skimming a wall in pieces leaves visible joins and takes longer than skimming it once. Put the rule in the patch line so the customer reads it before they ask for "just a few more".

Add one sentence about the result: "Patches are made flush with the surrounding plaster. The patched area will show a different texture or sheen until painted, and colour matching is a decorating matter." The decorators' quoting tutorial shows the other side of that hand-off.

The drying-time sentence customers need before they pick up a brush

New plaster looks finished long before it is. A customer who paints too soon traps moisture, the paint blisters or the finish dries patchy, and the plasterer gets the phone call. One paragraph in the quote prevents most of those calls.

The maker's position is a useful model. One multi-finish data sheet says to make sure the plaster is thoroughly dry before decorating, although a coat of permeable paint can go on in the interim. That sheet gives no number of days, which is the honest position: drying depends on thickness, heating, ventilation, the weather and what is behind the plaster. So do not promise "dry in three days". Promise to say when it is ready.

Drying and decorating
New plaster must dry fully before it is painted. It looks darker where it is still damp and lightens evenly as it dries. How long that takes depends on thickness, heating, ventilation and weather, so we will tell you when it is ready. Please do not paint before then. If you want a first coat sooner, ask the paint maker which permeable paint it recommends for new plaster and follow its instructions. Avoid forcing the drying with strong heat; keep the room ventilated instead. Decorating is not included in this quote.

Notice the last sentence. Decorating is excluded in plain words, and the timing is the customer's decision once you have confirmed the plaster is dry.

Exclusions and access, written so a customer cannot miss them

Here is the one-line quote again, and a realistic way it goes wrong: "Skim lounge, render back wall, patch up after electrician. $5,000 all in."

The customer assumed the hall ceiling counted as part of the lounge, that scaffold was covered because the price said "all in", and that the room would be ready to paint by the weekend. The plasterer assumed none of it. Nobody lied; the quote was silent. Each gap has a line that closes it:

• Scope boundary. "Living room only: walls and ceiling as measured above. Hall and landing are not included."
• Furniture and floors. "The customer clears the room to bare walls, or we move furniture at an hourly charge." Say who lifts the carpet edge if the skirting needs removing.
• Electrics and plumbing. "Sockets, switches and lights are isolated and removed by a qualified person before we start and refitted once the plaster is dry. Radiators are drained and lifted by a plumber."
• Decorating. "Not included, including the first coat."
• Power and water. "Clean water and power within reach of the work area, at no charge to us."
• Waste and parking. "Waste removal is the allowance shown. We need parking for the van and room for a skip or bags."
• Working hours and access. "Weekdays, 8 a.m. to 5 p.m. The side gate and a 1 m clear strip beside the rear wall must be open."
• What lies behind. "If we find loose or blown plaster, damp, or a coating we cannot identify, we stop, show you, and price the extra before continuing."

The last line is the most valuable and the one customers accept most readily, because it promises to show them the problem rather than send a bill. It is also the only protection you have on a house older than you are. If the extra becomes real work, put it in writing at the point you find it, in the same format as the original lines.

The finished quote: seven lines, one total, payment terms

Put the areas, rates and policies together and most of the quote is already written. Every figure below comes from the earlier tables; none was typed twice.

Say the sum out loud once: 561.00 + 271.80 + 515.00 + 2,674.00 + 168.00 + 990.00 + 85.00 = 5,264.80. Payment terms in this example: a 20% deposit of $1,052.96 to order materials and book the scaffold, and the balance of $4,211.84 on completion. The price is valid for 30 days, and the start date depends on scaffold availability and the weather.

Here is the page structure as a skeleton you can paste into your own template, in the order a customer meets it:

QUOTE [number]    [date]    Valid for 30 days
Customer and site address

1. Scope: one short paragraph per line
2. Price table: surface | detail | quantity | rate | amount
3. Measuring policy: "Openings over 2 m2 are deducted; smaller are not."
4. Assumptions: surface sound; access; power and water on site
5. Preparation and protection: who does what
6. Weather and access clause (render and scaffold)
7. Drying and decorating paragraph
8. Exclusions list
9. Hidden-conditions rule: stop, show, price the extra
10. Payment terms: deposit, balance, when due
11. Acceptance: name, date, signature or a reply of "accepted"

If your quoting app has AI drafting built in, check what it can see and which plan carries it. Tradify's pricing page lists SmartWrite (descriptions and improved writing) on its Plus plan, as of November 2026. Jobber's pricing page describes a "Draft for me" button that auto-drafts quotes, without saying which plans include it, so ask before you assume. ServiceM8's current pricing page names AI reporting and AI image generation but no quote-writing feature, so check its help centre if that is your app. These tools save typing. They do not know your output per day or your measuring policy, so the rates and the policy sentences still come from you.

A drafting prompt fed from your sheet, and four edits to its answer

Once the sheet holds the numbers, hand them to the AI and tell it what it may not touch. This prompt works as written in ChatGPT or Claude. No customer name or address goes in.

You are helping a plasterer write a customer quote. Use ONLY the figures in the table below. Do not invent, change, round or recalculate any area, rate or total, and do not add prices for anything that is not listed.

JOB: Three-bedroom house. The customer wants the living room re-skimmed, the rear wall rendered, and six patch repairs after rewiring.

LINES FROM MY SHEET:
1. Living room walls, skim: 37.4 m2 at $15.00 = $561.00
2. Living room ceiling, skim: 15.1 m2 at $18.00 = $271.80
3. Patches: 3 small at $55, 2 medium at $95, 1 large at $160 = $515.00
4. Rear elevation, two-coat render, float finish: 38.2 m2 at $70.00 = $2,674.00
5. Reveals: 14 m at $12.00 = $168.00
6. Scaffold, two weeks: $990.00
7. Waste removal: $85.00
TOTAL: $5,264.80

POLICIES:
- Openings over 2 m2 are deducted; smaller ones are not.
- Skim assumes sound plaster or board. A bonding coat is priced only for painted or glossy walls.
- Render goes on only when no frost is forecast, and is protected for 48 hours.
- Plaster must dry fully before painting; we say when it is ready.
- Payment: 20% deposit, balance on completion. Valid 30 days.

WRITE:
(1) one plain-English scope paragraph per line, using the quantities above exactly;
(2) an Assumptions list;
(3) an Exclusions list that includes anything a customer could reasonably assume is included;
(4) a drying-and-decorating paragraph that does not promise a number of days;
(5) payment terms;
(6) three questions I should ask the customer before sending.
Never promise a result such as "crack-free" or "perfect".

This is an illustrative excerpt of the kind of answer that comes back:

SCOPE
Line 1, Living room walls (37.4 m2): skim coat over sound existing plaster, prepared and sealed first, to a smooth, crack-free finish ready for decorating.
Line 4, Rear elevation (approx. 38 m2): two-coat render with a float finish, with patio doors deducted.

EXCLUSIONS
- Decorating
- Electrical and plumbing work
- Furniture removal
- Any work not listed above

QUESTIONS TO ASK THE CUSTOMER
1. Are any of the ceilings textured, and roughly when was the house built?
2. Can the room be cleared to bare walls before we start?
3. Who will remove and refit the sockets and switches?

It is a decent first pass and still not sendable. Four edits turn it into one:

1. "Smooth, crack-free finish ready for decorating." That is a promise, and it is wrong, because the plaster is not ready for decorating until it has dried. Replace it with "a flat finish; decorating can start once the plaster has dried" and let the drying paragraph carry the detail.
2. "Approx. 38 m²". The sheet says 38.2. Rounding looks harmless, but 0.2 m² at $70 is $14 and, more to the point, a customer who spots one changed figure stops trusting the rest. Restore the number.
3. "Any work not listed above". A catch-all line rarely persuades anyone; specific lines do. Replace it with the exclusions from the earlier section: hidden conditions, scaffold extension, hall and landing, parking and power.
4. Keep the questions. The first one, about textured ceilings and the age of the house, is worth the whole exercise. It prompts you to ask the customer something you might otherwise discover on the ladder.

Without the "only these figures" rule, chat tools can add lines of their own, such as a protection charge or a contingency, and produce a total that no longer matches your sheet. The rule helps; the checks below are what you rely on.

Six checks before the quote goes out

Run these in order. They take about ten minutes and catch nearly everything an AI draft gets wrong.

1. Re-add the amount column in the sheet and compare it with the total on the page.
2. Compare every area and rate with the sheet. Drafts round, reorder and "tidy" numbers.
3. Search the draft for any figure that is not in your sheet: percentages, numbers of days, prices, thicknesses.
4. Read the exclusions as the customer would. What might they expect that is not listed?
5. Read the drying paragraph aloud. If it promises a number of days, rewrite it.
6. Check the terms: validity period, deposit amount, balance, and how the customer accepts.

A second AI pass helps with check four, because a fresh reader spots assumptions the author no longer sees. Paste the finished quote into a new chat and ask:

Read this plastering quote as a customer who has never had plastering done. List five things I could reasonably assume are included but are not stated, and three sentences that could be read two ways. Do not rewrite the quote.

Add the items that are real and ignore the rest. Then keep the finished page as your template: next time, only the measurements, the rates you have updated and the site-specific exclusions change. For anything the customer adds once work starts, the same line-by-line format works for the extra: what was found, what it costs, how long it adds and a yes before you carry on.

Plastering quote questions that come up on site

Should a plastering quote be per square metre or a lump sum?

Show both. Price skim and render by measured area so the customer can see how the total is built, then state the lump sum the customer pays. Patches work better per patch with a minimum visit charge. A lump sum alone hides the area and invites arguments about what was included.

How do I stop a patch repair turning into a free re-skim?

Write a size limit into the patch line and say what happens beyond it. For example, patches up to a stated area are priced per patch, and more than three on one wall, or any patch over one square metre, is quoted as a re-skim of that wall. The customer then knows the rule before work starts.

Can AI work out the areas and the total?

Let a spreadsheet do that. Chat tools write fluent quotes but can mis-add or quietly round a figure. Put the measurements and rates in a sheet with formulas, then give the AI the finished numbers and tell it not to change them. Check every figure in its draft against the sheet before sending.

What drying time should a plastering quote state?

Do not promise a number of days. Drying depends on thickness, heating, ventilation and weather. State that the plaster must dry fully before decorating, that you will tell the customer when it is ready, and what the paint maker allows in the meantime. Check your plaster's data sheet for its own wording.

Further reads

• Kitchen Installation Quote Template: Scope and Exclusions With AI — Another trade quote built on scope lines and exclusions.
• Insulation Quote Template: Material, Thickness and Area Lines With AI — Area-based lines with thickness stated, a close cousin of skim and render.
• Electrician Quote Template: Can AI Write a Domestic Quote You Can Send? — The electrician's side of the rewiring that leaves your patches behind.
• Can ChatGPT Write a Builder's Quote? A Worked Example — A full builder's quote drafted with ChatGPT, step by step.
• Following Up Silent Quotes With AI: A Decorator's Playbook — Chasing a quote that has gone quiet, written for decorators.
• Electrical Change Orders Written With AI: Ask for Extra Work Clearly — Wording for asking to be paid for extra work found mid-job.
• Loft Conversion Quote Template: Stages and Provisional Sums With AI — How provisional sums handle costs you cannot see yet.
• Drywall Estimate Template: Scope Lines and Exclusions Written With AI — Scope lines and exclusions for board-and-tape work before the skim.
• Damp Survey Report: Write Findings and Quote Lines With AI — Turn readings and site notes into a clear damp report and quote lines in ChatGPT or Claude, while the surveyor keeps the diagnosis and checks every line.
• Siding Estimate Template: Squares, Trim and Waste Lines Written With AI — A siding estimate laid out line by line, with the squares, trim and waste sums worked from wall measurements and a ChatGPT pass for missing items.
• AI Tools and AI Development: The Complete 2026 Guide — the AI hub, including every tutorial in the AI-for-business series.

Sources: Thistle MultiFinish product data sheet (coverage, thickness, decoration); K Rend winter-working guidance and a Vimark monocouche data sheet (application temperatures, protection after application); Tradify, Jobber and ServiceM8 pricing pages.