Assess before removal
- Existing profile and sheet condition
- Corrosion at laps and cut edges
- Battens, purlins and fixing substrate
- Flashings, cappings and penetrations
- Insulation and condensation control
- Gutters, valleys and roof drainage
- Solar panels and other services
Specify the new roof
Record the selected product, profile, thickness, coating, colour, fasteners, underlay or blanket, flashings and cappings. Manufacturer requirements and site exposure affect suitability.
Old and new junctions
Extensions and retained roof areas create transition details. The quote should describe how profiles, levels, drainage and compatible materials meet.