SHS Integrated Services Ltd, based at Barry, Vale of Glamorgan, has kept on 11 staff to assist with the winding-up.
Administrator Deloitte blamed poor trading over the past two years with talks under way over the sale of contracts and assets.
The company, that also provided insulation and cladding, has other bases in Pembrokeshire and Doncaster.
A scaffolding firm has made 148 people redundant after going into administration, it has been confirmed.