No more disruptive that fitting a central heating system where access must be gained underneath floor boards and in loft areas. A typical installation would take approximately three days. However, if your house is very large or there are special circumstances it could take a little longer.
Yes. Statistics show that your chances of surviving a domestic fire where domestic fire spinklers are installed are 95%, in comparison to only 60% where there only smoke detectors fitted.
This is true, however, in most cases the fire would be controlled at an early stage resulting in less combustion, also the water droplets consideraly reduce the amount of smoke emission.