Installation is generally
the responsibility of the specialist contractor. It may be undertaken
by directly employed labour or by a labour only installation subcontractor.
When using installation sub-contractors it is important that the installers
are competent to install the wall to the required standard and quality.
Competent installers have
both generic skills and knowledge and also specific knowledge of the cladding
system being installed.
The knowledge required comprises:
CWCT has established a training
scheme where installers may be trained by the system designers.
General knowledge of glass and
glazing, gaskets, sealants, hardware
Particular knowledge of how
the system being used is assembled including, joint assembly, drainage
Supervision of installation
It is essential that all
those who purport to supervise building envelope installatin have adequate
knowledge. CWCT run a course ‘Managing the cladding package’ that
is attended by architects, main contractors and specialist contractors
to teach an understanding of the ‘nuts and bolts’ of cladding and glazing.
CWCT have produced a guide to
installation that may be downloaded here.
It should be noted that this guidance is no substitute for proper training.
The better system suppliers
and specialist contractors are able to supply simplified site drawings
and/or exploded views of mullion-transom joints and the like. These
facilitate both installation and checking.