Drone roof inspection in France: method, defects and report template

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October 2026latest revision of this guide

• Primary sources: Légifrance, EUR-Lex, Géoportail, DGAC.
• Every figure linked to its source, dated in the last chapter.
• Dated updates: you always read the latest version.

Who it is for

• Roofing and waterproofing contractors, French or foreign, who want to survey and quote without climbing, or to subcontract inspections to a drone operator
• Professional drone operators and remote pilots selling roof inspections in France who want to deliver a report a roofer, an expert or a property manager can use as it is
• Building surveyors and insurance loss adjusters who commission or receive roof imagery and need to know what it proves
• Property and facility managers, landlords and corporate real estate teams following the condition of several roofs over time

In pictures

Illustrative photos, published by their authors under free licences.

Contents of the complete guide

1. What the drone replaces, and what it never will (free extract below)
2. Preparing the mission: consents, neighbours, privacy and flight framework
3. The standard flight plan: passes, angles, distances and resolution
4. Tiles and slates: the checklist for small-element roofs
5. Zinc, metal sheet, fibre-cement and flat roofs: the checklist for continuous coverings
6. Roof details: ridges, verges, valleys, flashings, gutters, stacks and equipment
7. Thermography and asbestos: two topics that change the set-up
8. Organising photos and plotting defects on a plan
9. Writing the report: structure, severity, recommendations and limits
10. Using the report for quotes and insurance claims
11. Ground safety and common mistakes
12. Seven templates to copy
13. Sources and consultation dates

Included: 68 checklist items and 11 decision or reference tables.

Introduction

A drone roof inspection rarely fails because of the flight. It fails because the photos are useless: taken too far away to show a cracked tile, with no overview to tell which slope you are looking at, with no reliable date, dumped in a folder of four hundred files. The roofer cannot price the work, the loss adjuster cannot link the damage to the storm, the property manager cannot compare with last year. The flight happened; the inspection did not.

This guide sets out a complete method, from the first call to the handover of the report, for the remote pilot who flies the inspection, the roofing contractor who uses it before quoting, the expert who relies on it as evidence and the manager who orders it every year. It covers the line between what a drone can observe and what it cannot verify, preparation in France (consents, neighbours, privacy, flight framework), a standard flight plan with the ground sample distance calculation, defect checklists for each roof covering and each roof detail, how to file photos on a roof plan, the structure of a ranked report, how the report is used in a quote and in an insurance claim, ground safety, common mistakes and seven templates ready to fill in.

The guide is up to date as of 31 October 2026. The texts cited were checked on that date; their current version is on Légifrance, the official French legal database. French terms are kept where you will meet them in French documents and correspondence (préfecture, cerfa, DTA, commissaire de justice). Good practice for each roof covering is set by the French NF DTU standards and the technical assessments of the product installed: this guide helps you describe what you see; it does not define what a compliant roof is.

What the drone replaces, and what it never will

Seeing is not verifying

A drone is a remote visual inspection tool. It takes photos and video, sometimes thermal images, and photogrammetry lets you measure areas and lengths. It touches nothing. Anything that needs contact, load, removal or a physical measurement is out of its reach:

• no tactile check: it cannot probe a batten, lift a tile, test whether a fixing is tight or whether a flashing upstand is bonded;
• no watertightness test: it cannot flood-test a flat roof, run a smoke or tracer test, or measure the moisture content of insulation (thermography shows surface temperature differences, not moisture content);
• no view under the covering: underlay, battens, boarding, timbers and insulation are only visible from the loft or by removal;
• no structural judgement: a visible sag in the roof plane is an observation; its cause and seriousness are for a structural engineer;
• no material analysis: a drone cannot tell whether a sheet contains asbestos (chapter 7).

The report must say so: a drone inspection records the apparent condition of the roof, from outside, on a given date. It is often the first time anyone has seen every slope, valley and chimney stack. It is not a diagnosis.

The decision table

The most efficient sequence is almost always the same: drone first, to see everything and locate precisely; access at height second, only where the report justifies it. Access methods are compared in the guide roof inspection: drone or cherry picker.

Why stop climbing just to look

Falls from roofs are among the most serious accidents in construction. A study by Dong, Choi, Borchardt, Wang and Largay published in 2013 in the Journal of Safety Research (doi:10.1016/j.jsr.2012.08.024) analysed fatal falls in the US construction industry from 1992 to 2009: falls from roofs accounted for one third of them, and 67% of those deaths occurred in firms with 1 to 10 employees. The data are American, but the pattern is familiar: some climbs are not work, they are a visit to have a look. Those are the climbs a drone removes. It does not remove, for the work that follows, the protection French labour law requires for temporary work at height (Article R4323-58 of the Labour Code).

Five conditions for a useful inspection

1. A referenced overview: every defect is tied to an identified slope and a position.
2. A calculated resolution, based on the smallest defect to be seen (chapter 3).
3. Complete coverage: every slope, verge, valley and penetration, including those not visible from the street.
4. A reliable date: clock checked, original files and flight log kept.
5. A ranked report that states its limits: what was seen, what was not, what must be checked by hand.

Without all five, it is just a set of photos.

How it works

1. You pay on StripeBy card, Apple Pay or Google Pay, in one go, on the checkout page hosted by Stripe: your card details never go through our servers.
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3. Guaranteed contentAs described, or your money back: email devis@c-drone.fr and we restore access or refund you (terms of sale, in French).

Frequently asked questions

What does “Drone roof inspection in France: method, defects to spot and report template” contain and how much is it?

For €29 VAT included (€24.17 excl. VAT), you get drone roof inspection in France: method, defects to spot and report template: 12 chapters online, about 32 printable A4 pages and 7 ready-to-copy templates, to carry out or commission a usable drone roof inspection in France: know when a drone replaces a cherry picker and when it does not, prepare the consents and the flight framework, build a slope-by-slope flight plan with the right ground sample distance, record the defects of each roof covering and each roof detail, file the photos on a roof plan, write a ranked report that states its limits, and produce dated evidence for a roofing quote or an insurance claim.

How do I receive the guide?

Right after payment you are redirected to the complete guide's page. Bookmark it, or print it to PDF (Ctrl+P or Cmd+P, “Save as PDF”). Stripe also emails you the receipt.

Do I get an invoice?

Yes: Stripe generates the invoice and emails it. You can enter your company name and VAT number at checkout. Seller: Lacangel Group (VAT FR21995268018); prices VAT included.

Is the guide kept up to date?

Yes. The guide's page is updated when the rules change; your access stays valid and you always read the latest version.

Which texts is the guide based on?

On the official texts in force (EU regulations, French decrees and codes), cited and dated with their links: you can check every rule at its source, which is authoritative. C-DRONE is an independent publisher.

Which device can I read it on?

Computer, tablet or phone: it is a web page, with no app or account to create. Print it to PDF to archive it or share it within your team.

What guarantee do I get?

The content matches its description, or you get your money back: email devis@c-drone.fr and we restore access or refund you (terms of sale, in French). This also applies to business purchases.

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Instant access to your guide after payment · terms of sale (in French). Questions before buying: devis@c-drone.fr.