TSRW, South Africas sole manufacturer of centre pivot Roof Windows, has 22 years experience in Roof Window manufacture and installation. TSRW owns a patent on the hinge mechanism and has developed products which are designed to withstand South Africas harsh conditions.Previously marketed as SOLIS, TSRW is known to most South African architects who have supported and specified our product over the past two decades.With the recent upsurge in Green Building practices, TSRW finds itself in an envious position to be a leader in servicing the residential market. By specifying roof windows the architect is introducing natural light into an otherwise dark area, thus saving on electricity as well as allowing extra ventilation when needed.