Flat roof quote template for UK builders and roofers.
Say what's under the felt before you price what goes on top.
Free flat roof quotation template for UK builders and roofers. Covers strip-out, decking, insulation, GRP or EPDM membrane, trims, flashings, guttering, waste, access, guarantees and exclusions.
What should a flat roof quotation include?
A flat roof quotation should state the area and the system (GRP, EPDM or felt), then split stripping the old covering, replacing deck boards, insulation and vapour control (warm or cold roof), the membrane, edge and drip trims, lead or flashings at walls, guttering, access and waste. Add a provisional rate for rotten joists or firrings found after strip-out, the guarantee you're giving, and the payment terms.
Source note: Use this as a quoting structure, then confirm measurements, the roof specification, current prices, VAT treatment and site conditions. Approved Document L covers England; agree who checks the applicable Building Regulations for the job.
Flat roof estimate example: 18 m² GRP warm roof
Fictional arithmetic example for about 18 m² over a garage or extension, warm roof in GRP. Not a roofing price guide. Replace every line with measured quantities and current prices. VAT not included.
| Cost or calculation | Amount |
|---|---|
| Access, skip and preliminaries | £370.00 |
| Strip-out and new OSB deck | £772.00 |
| Insulation, vapour control, GRP and trims | £1,719.00 |
| Flashing, guttering and site clean | £327.00 |
| Total cost | £3,188.00 |
| Markup (25% of cost) | £797.00 |
| Selling price before VAT | £3,985.00 |
Markup is calculated on cost. Gross margin is calculated on the selling price: this example gives 20.0% gross margin before VAT.
Check markup and margin with your own figuresMeasure and name the system
Area, falls, upstands and the membrane (GRP, EPDM, torch-on felt). Name the product so a change is a variation.
Strip-out and deck
Removing the old covering and boards, disposal, and new OSB3 or ply deck on firrings.
Warm or cold roof
Insulation thickness, vapour control layer and ventilation. Building Regulations may apply when more than a set share of the roof is renewed, so say who checks.
Edges and details
Drip and edge trims, wall abutments with lead or trims, outlets and gutters.
Hidden defects
A provisional rate per joist or per m² for rot found after strip-out, agreed before work starts.
Guarantee and terms
The guarantee you give, quote validity and payment stages.
Check the primary sources.
What to do before you send the price.
Step 1
Measure the roof and check falls and upstands.
Step 2
Price strip-out, waste and the new deck.
Step 3
Add insulation, membrane and trims.
Step 4
Add flashings, guttering and access.
Step 5
Add a provisional rate for defects, overhead, margin, VAT and terms.
Free download
Send me the flat roof quote template.
Enter your email to request the free flat roof quote template. Replace the example quantities and prices with your own before quoting.
Keep pricing the job properly.
flat roof cost calculator
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Roofer quote template
Scope access, labour, materials and terms for wider roofing jobs.
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Builder quote template
Structure a quote for the rest of the building work.
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VAT quote wording
Make the VAT treatment clear before the client agrees the price.
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Construction margin calculator
Check markup on cost against margin on the selling price.
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Quick answers.
GRP or EPDM, does the template change?
The structure stays the same. Swap the membrane, trims and labour lines for the system you use.
How do I price rot I can't see yet?
Add a provisional rate per joist or per m² and say it's only charged if found.
Should I include a guarantee in the quote?
Yes, state what's covered and for how long, and what would void it.
Is the flat roof quote template free?
Yes. Use the structure here and request the free template by email.
Who is this template for?
It is for UK builders and trade businesses checking a real job before they create a saved estimate or client quote.