Paint Systems for Exterior Historic Metalwork

Cast iron hopper head and downpipe part-way through repainting, fresh matt black over old flaking paint and primer

A conservation guide to preparation, coating selection, colour and maintenance on historic ironwork, railings, rainwater goods, gates and architectural castings. Building Restoration Index — Technical Library. By Paul Stenning and Mike Walters, Historic Buildings Advisors, Tuscan Foundry Products. In summary Coatings on historic metalwork fail predictably: at edges and arrises where film thickness is lowest, […]

Blasting Cast Iron Rainwater Goods: The Casting Skin You Cannot Put Back

Sandblasting cast-iron gutters.

Discover the hidden dangers of grit blasting historic cast iron rainwater goods and learn why preserving the casting skin is crucial for longevity. This conservation-led guide reveals low-impact methods that clean without destruction, the risks of conventional grit blasting, and when replacement is the better option.

Cast Iron Corrosion Protection: Rust, Humidity and the Right Paint System

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A technical guide to how cast iron corrodes, why relative humidity above 65% accelerates attack, and how linseed oil and epoxy paint systems compare for heritage and industrial ironwork. Written for architects, conservation officers and specifiers making paint system decisions on listed and non-listed cast iron rainwater goods. Technical Summary Cast iron corrodes through an […]

Cast Iron Gutters and Downpipes in Somerset and Bath: A Heritage Specification Guide

Cast iron gutters and downpipes remain the correct specification for listed and period buildings in Somerset and Bath. No other material matches cast iron for longevity, authenticity, and conservation compliance across the wide range of building types found in this part of England. From the steeply-pitched medieval churches of the Somerset Levels to the long […]

Restoring Heritage with Tradition: Linseed Oil Paints for Cast Iron Guttering and Pipe Systems

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Preserving the Past: The Importance of Authentic Traditional Paint Finishes Authentic paint finishes preserve the historic character and charm of listed buildings and period properties. They protect the structure and ensure the building’s original aesthetic is maintained, respecting its heritage. Traditional paints — such as linseed oil-based paints — allow the building to breathe, preventing […]

Specification for Painting Cast Iron Gutters and Pipes Using Linseed Oil Paint

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This specification covers the surface preparation, priming, and painting of cast iron gutters and pipes using an environmentally friendly linseed oil-based system. It ensures a durable, breathable, and protective coating appropriate for heritage and conservation projects. 1. Scope This specification applies to cast iron gutters and downpipes on period, listed, and traditional buildings. It covers […]

Linseed Oil Paints for Cast Iron Guttering: The Heritage Finish Guide

Traditional paint finishes for cast iron guttering_linseed oil paints

Linseed oil paint has been used to protect cast iron for centuries. On listed and period buildings, it is not simply one option among many — for conservation officers and heritage specifications, it is frequently the required finish. This guide explains why, and how it should be applied correctly. Why Linseed Oil Paint for Cast […]