The Heritage Directory

Articles :

Concrete Protection & Remedial

Historic reinforced concrete buildings often suffer from corrosion of the reinforcement due to carbonation, being a reaction between carbon dioxide and concrete, chloride corrosion of the reinforcement, as well as the thinness of construction or unsuitable aggregates.

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Companies supplying goods or services for Concrete Protection & Remedial
AKS Ward
7 Bancroft, Hitchin, Hertfordshire SG5 1JQ
Tel 01462 420668
As well as the typical work of conservation structural engineers with minimal alteration, other services included advice on cleaning and repairing masonry, finite element analysis of existing structures, forensic engineering, historical mortar analysis and building stones identification. We have also assessed, advised and co-ordinated the sympathetic cleaning of terracotta and faience including Harrods. AKS Ward have been synonymous with the assessment and treatment for the corrosion of steel frames behind masonry elevations since the 1970's, with its common sobriquet "Regent's Street Disease". Conservation projects have included the Tower of London, Kensington Palace, Kings Cross and St Pancras.
Heritage Testing Limited
Unit 43, The Old Brickworks, Station Road, Plumpton Green, Lewes, East Sussex BN7 3DF
Tel 01273 891785
Heritage Testing Ltd is a specialised consultancy and laboratory testing service in support of construction, conservation and remediation. The cases range from vernacular cottages to historic churches, castles and ruins, including Westminster Palace, Syon House and the Royal Pavilion. Services include structural materials analysis of lime mortar, render, plaster, wattle and daub, cob, as well as historic cements and concretes. Defects within concrete structures can be diagnosed, as a precursor to an effective repair solution, including corrosion of embedded reinforcement, depth of cover, carbonation, half cell potential, chloride ion and sulphate ingress and total alkalis.
Keim Mineral Paints Limited
Santok Building, Deer Park Way, Donnington Wood, Telford, Shropshire TF2 7NA
Tel 01952 231250
Keim Mineral Paints have had a significant role in the restoration of our heritage since 1878. Keim Mineral Paints are natural, water-borne liquid silicate paints which produce an extremely durable, colourfast, sustainable protective finish with high vapour permeability, which work in harmony with the environment. Keim Mineral Paints give specifiers confidence in the longevity of decoration and are ideal for use in restoration and conservation due to the high breathability of the paints, compatibility with lime and use of all natural ingredients. Render, concrete and stone repair materials are also available.
St Astier Limited
11 Enterprise Court, Seaham Grange Industrial Estate, Seaham, Co Durham SR7 0PS
Tel 0191 5214552
St Astier is a historic building conservation contractor operating across the North of England. The company has a wealth of experiencing in conserving and repairing Grade I and II listed properties, Scheduled Ancient Monuments, masonry ruins, ecclesiastical buildings and other structures of historic importance. Specialist building conservation services include natural stone repair and conservation, sensitive masonry cleaning, hidden/non-invasive structural repair and reinforcement, historic timber preservation, concrete repair & protection, and the installation of non-invasive helical screw piles and ground anchors for stabilising retaining walls.
Avanti Architects, 361-373 City Road, London EC1V 1AS Telephone 020 7278 3060 Website: