120 THE BUILDING CONSERVATION DIRECTORY 2024 CATHEDRAL COMMUNICATIONS MASONRY CLEANING ◼ BULLEN CONSERVATION LTD Lowerhouse Works, Lowerhouse Street, Oldham, Lancashire OL1 3NN Tel 0161 633 6528 Fax 0161 633 7064 Email sales@bullenconservation.co.uk www.bullenconservation.co.uk BUILDING CONTRACTORS, STONE, TERRACOTTA AND MASONRY CLEANING: See also: display entry in Building Contractors, page 49 and profile entry in Stone, page 74. ◼ D B R CONSERVATION 83 Victoria Street, London SW1H 0HW Tel 020 7277 7775 Fax 020 7635 0556 Email info@dbrlimited.com estimating@dbrlimited.com www.dbrlimited.com MASONRY CLEANING: See also: display and profile entries in Interiors Consultants & Conservators, page 136 and 137. ◼ D B R LONDON 83 Victoria Street, London SW1H 0HW Tel 020 7277 7775 Fax 020 7635 0556 Email info@dbrlimited.com estimating@dbrlimited.com www.dbrlimited.com Contact Adrian Attwood/Alan Bilham MASONRY CLEANING: See also: display entries on the inside back cover, and in Tiles, page 146 and profile entry in Building Contractors, pages 54. ◼ D B R SOUTHERN Lower Chancton Barn, Wiston, West Sussex BN44 3DD Tel 01273 309618 Email southern@dbrlimited.com www.dbrlimited.com MASONRY CLEANING: See also: display and profile entries in Stone, page 75 and 76. c EXPERTS IN CONSERVATION LASERS SINCE 1994 • Sales • Rentals • Training • Testing Supplying quality laser cleaning systems worldwide Lynton Lasers Ltd Tel +44 (0)1477 536977 Email info@lynton.co.uk Web conservationlasers.com laser cleaning can now offer a high degree of selectivity and control, and has an increasingly important role to play in the cleaning of historic buildings. The development of high-power fibre lasers in the last 5–10 years has proved a significant step forward by making the technology viable for larger-scale heritage cleaning projects, but there is a place for both low and high-power lasers in conservation. What is important is that the laser parameters (wavelength, pulse length, average power and so on) are appropriate to the nature of the problem and the scale of the job. As always with conservation treatments, success depends on the skill and experience of a welltrained practitioner, and on their understanding of the surfaces being cleaned. Recommended reading Cowan, J, ‘Laser Cleaning Sculpture on Lincoln Cathedral’s West Front’, The Building Conservation Directory 2021, Special Report on Historic Churches, 28th Annual Edition ‘Laser Cleaning the Petrie Museum’s Plaster Cast Bust of Amelia Edwards’, http://bc-url.com/BCD242 Weeks, C, (1998) ‘The Portail de la Mere Dieu of Amiens Cathedral: its Polychromy and Conservation’, Studies in Conservation, 43, 101–108 Dajnowski, A, (2018) ‘Laser Cleaning of the Nickerson Mansion: the first building in the US to be entirely cleaned using laser ablation’, Lasers in the Conservation of Artworks: Proceedings of the International Conference Lacona VII, Madrid, Spain, 17–21 September 2007, Taylor and Francis Group (2008), 209–214. MARTIN COOPER has been researching laser cleaning of stone sculpture since the early 1990s. After completing his PhD he published the first textbook on laser cleaning in conservation, and at the Conservation Centre of the National Museums Liverpool introduced a laser cleaning training course which ran for 15 years and trained many international conservators. A member of the Permanent Scientific Committee of the Lasers in the Conservation of Artworks (LACONA), Martin joined Lynton Lasers in 2013 as head of its conservation division. Figure 11: Laser cleaning being carried out on fragile carving at Christ Church Gate using a low-power laser handpiece; note the bespoke blue extraction nozzle attached to the end of the laser handpiece to collect particulates ejected during cleaning (Photo: Canterbury Cathedral)
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