The Parry Semi Sheet is well suited to larger buildings.
Four Semi Sheets are required per square metre coverage.

Semi Sheets are usually made in 8mm thickness, but 10mm sheets can be produced.

Semi Sheets can be used with a fairly light support structure and a batten spacing of 50cm.

Hand powered and electric versions are presently available for the production of Semi Sheets.  They consist of a large vibrating table which, due to the size of the moulds and the screed, is provided with traversing arms to hold the moulds in place for the screed transfer and also a tilting screed table to ease transfer of screed to mould.

Hand Powered and Electric versions are available

The scale of production depends upon the number of moulds supplied and the number of workers employed.  In practice, a single Semi Sheet could fill a maximum of 250 moulds in an 8-hour working day, employing 5 workers.

Typical plants usually include moulds in the region of 50 (starter plant), 80, 100 or 200 per machine with an output of 250, 400, 500 or 1000 Semi-Sheets per week.