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From Heritage Link:
EH seeks support over dichloromethane (DCM)
A Directive under consideration in the European Parliament will, if agreed, result in the partial ban of products containing dichloromethane (DCM). Methylene Chloride, the basic ingredient in 90% of paint strippers, has been used as a solvent for paint stripping for at least 70 years. It has proved to be highly effective at removing the paint, stain or other coverings with minimal harm to the surface or material of the building or artefact. The EU is proposing a ban on the sale of paint strippers containing dichloromethane to commercial users (i.e.: the general public). Although industrial users will not be restricted, professional users such as contractors and conservators would have to undergo specialist safety training, which English Heritage considers impractical and difficult to implement effectively.
English Heritage strongly opposes the proposed ban for commercial users and additional requirements for professionals. It is calling for a derogation for the use of DCM strippers on protected monuments (scheduled ancient monuments, listed buildings and buildings within conservation areas). There are of course a great many traditional buildings which are of local historical importance which should also expect to see included in this derogation.
Heritage Link members have already been asked to contact Alexandra Coxen if they share these concerns and/or are involved in lobbying on this issue. Readers are invited to contact her at alexandra(dot)coxen@english-heritage(dot)org(dot)uk