Safety nets are less effective
A complicated system that requires the correct sag and fall height to be calculated correctly makes the product very difficult to install. A timely installation process with individual nets needed for separate rooms and regular inspections are necessary.
Safety nets are hired and reused, and are therefore an extra cost to the building structure itself. Delays often occur due to safety nets being installed prior to the roof trusses and then removed on installation of the roof cladding.