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 Lister Beare
Manor Court 26 Bancroft, Hitchin, Herts SG5 1JW (and London, Oxford and Southampton)
Tel 01462 420668 Fax 01462 438630
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.
Avanti Architects
361-373 City Road, London EC1V 1AS
Tel 020 7278 3060
Avanti Architects are an award winning design practice, established in 1981 with a broad portfolio of work in conservation, commercial, health, residential and education. Founded on providing strategic design advice based on innovation, flexibility and sustainability, we redefine established ideas of building use and challenge traditional working practices. Avanti have worked on over 150 listed buildings, ranging from an Elizabethan manor house in Hackney, to Jesus College Cambridge to the Penguin Pool at London Zoo. These buildings have comprised houses, public buildings, schools, universities, railway stations and churches and have included several estates of Georgian and Victorian housing.
Heritage Testing Limited
Unit 43, The Old Brickworks, Station Road, Plumpton Green, Lewes, East Sussex BN7 3DF
Tel 01273 891785 Fax 01273 256545
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 Fax 01952 231251
Keim Mineral Paints have had a significant role in the restoration of our heritage since 1878. Keim Mineral Paints are environmentally friendly, sustainable, colourfast protective and decorative surface coatings. They provide a wide range of solutions to common problems associated with conventional film forming acrylic coatings in addition to being highly decorative. 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 Ltd
11 Enterprise Court, Seaham Grange Industrial Estate, Seaham, Co Durham SR7 0PS
Tel 0191 5214552 Fax 0191 5214612
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 humane bird deterrent systems to prevent roosting birds.
TRAC Structural Ltd
23 Belvoir Road St Andrews Bristol BS6 5DQ
Tel 0117 924 0224 Fax 0117 924 8574
TRAC Structural Ltd was formed in 1998 and is highly regarded within the construction industry as specialists in structural repairs, including works to Listed Buildings and historic structures. We work for a wide range of clients from individual house owners to companies of all sizes. We are installers of Helifix for masonry repairs and Rotafix for structural timber frame resin repair. Other specialist services include glulam beam repair, concrete structural repair and precision diamond drilling for stabilisation and core samples and Abseil Access for structural survey and repair.