On subjects of health and safety and legislation, and your question relates
to both, I prefer to point people in the direction of the best source of
advice. Health and safety in the construction industry as a whole is treated
very seriously indeed by all the bodies serving the industry and the
construction companies themselves. All subcontractors, and window installers
are such, are expected to be familiar with all aspects of health and safety
and the relevant legislation and have their employees formally trained. I
recommend that you look at the Improved Construction Health and Safety
website
wwt.uk.com where you will find many pages of valuable guidance on all
aspects of health and safety in the construction industry. I would also
suggest you consult with your local Construction Industry Training Board
(CITB) who will guide you as to where to receive the relevant training for
your staff.