Barn conversions
Guttering for barn conversions
Barn conversions rarely have a conventional eaves line. Open verges, exposed rafter feet, stone copings, wide roof planes and long uninterrupted runs all change how a rainwater system needs to be detailed.
We specify and install cast iron, zinc, copper and seamless aluminium systems on barn conversions across the Cotswolds, Oxfordshire, Wiltshire and Berkshire.

Why barn conversions need a different approach
Agricultural roofs shed a lot of water from a large plane onto a short run of gutter. Standard domestic sizing overflows in heavy rain, particularly where rooflights concentrate runoff or where a valley discharges into a single outlet.
We calculate the drained area and specify gutter capacity, outlet positions and downpipe sizes to suit — then detail the fixings to whatever the barn actually offers: rafter feet, wall plates, stonework or a new fascia.
- Capacity sizing for large roof planes
- Fixing to exposed rafter feet and stonework
- Deep-flow and box gutter options
- Concealed and minimal downpipe routes
- Seamless aluminium in long unbroken runs
- Zinc, copper and cast iron for heritage schemes
Choosing the material
Where a conversion sits in a conservation area or beside a listed farmhouse, cast iron or zinc usually reads best and is often what the planning officer expects. Copper suits schemes where a patina is wanted.
On contemporary conversions, seamless aluminium is the practical choice: long runs with no joints, a wide colour range, light enough for awkward fixings, and effectively maintenance-free.
Planning conditions and permitted development
Class Q and similar conversions frequently carry conditions on external materials, including rainwater goods. Plastic is often expressly excluded.
We supply the material, profile and colour detail needed to discharge those conditions, and can work directly with your architect or contractor on the rainwater package.
In summary
- What we do
- Specification and installation of cast iron, zinc, copper and seamless aluminium rainwater systems on barn conversions and converted agricultural buildings.
- Why it differs
- Large roof planes, open verges and exposed rafter feet mean capacity sizing and fixing detail matter far more than on standard housing.
- Where we work
- The Cotswolds, Oxfordshire, Gloucestershire, Wiltshire and Berkshire, from our base in Highworth.
- How to start
- Call 01367 248417 for a site survey, or upload drawings and we will return a rainwater specification and budget cost.
Related pages
Begin a Project
Let's start a conversation.
Share a little about your property and requirements. We'll be in touch personally within one working day to arrange a site visit.
- 7a High Street, Highworth, SN6 7AG
- 01367 248417
- guttering@austendawson.co.uk
