What to discuss
Choose a covering around the roof shape and existing build-up, then compare fastening, connections and maintenance needs. A material name or price per square metre does not describe the whole job. Edges, outlets and penetrations should be identifiable in every proposal you compare.
Agree what is included
A clear proposal distinguishes what stays, what is removed and what is newly installed. Ask which connections and finishes are included and which findings remain uncertain. Record changes and their price before giving approval.
What affects the price?
Compare the same roof sections and tasks before comparing prices. The total should explain materials, preparation, removal, access equipment and finishes, with clear exclusions and a process for approving additional work.
Preparing the work
Take photographs only from a safe place. Do not climb onto the roof yourself.
Tell us about your roof
Give the address, affected roof section and when the problem occurs or what you want to improve.
Inspection and proposal
Agree the inspection and its fees, then review materials, tasks, costs and any open questions.
Agree the work and access
After approval, arrange access and scheduling. Changes and additional work are discussed before proceeding.
Completion and maintenance
Review the completed work, keep the documents and agree how to report concerns and arrange maintenance.
Main roof material families
| Material | Application | What to check |
|---|---|---|
| Bitumen: APP en SBS | Flat and low-slope roofs | Base and cap sheets, safe installation, seams |
| EPDM | Synthetic-rubber waterproofing | Adhesive, substrate and details as one system |
| PVC | Plastic roof membranes | Material compatibility and welded seams |
| TPO / FPO | Thermoplastic polyolefin membranes | Product-specific welding and fastening |
| Liquid-applied waterproofing | Details or a specified complete roof system | Substrate, thickness and curing |
| Clay and concrete tiles | Pitched roofs | Profile, pitch, underlay and wind fixing |
| Natural slate | Pitched roofs and decorative work | Stone quality, coverage and fixings |
| Fibre-cement slates | Pitched roofs and facades | Product dimensions and permitted use |
| Zinc and copper | Metal roofs, gutters and flashings | Expansion, underside and material contact |
| Aluminium and coated steel | Standing-seam, profiled and panel systems | Coating, fastening, noise and condensation |
| Thatch | Purpose-designed pitched roofs | Specialist build-up, maintenance and fire safety |
| Timber shingles | Specific pitched-roof designs | Timber species, ventilation and details |
| Glass and polycarbonate | Glazed roofs and canopies | Support profiles, movement, safety and solar gain |
| Green / sedum roof | Planting over suitable waterproofing | Saturated weight, root protection, drainage and care |
| Solar roof / integrated PV | Power generation combined with roofing | Waterproofing, ventilation and installer responsibilities |