The thought is that if you cut a hole in the ceiling it provides a route for fire enter the ceiling void and may lead to damage of the supporting structure.
These fire rated downlights give 90 minutes or more protection reinforcing the fire protection and that's why they are used. More often than not fire rated downlights and fire protection is not necessary. The ECA website has an opinion we tend to agree with view their answer here
90 minute fire rating
Part E Acoustic Compliant
Tested to BS476 Part 23
Ventilated to reduce heat build up
Prevents fire from penetrating the ceiling void and retains ceiling's fire protection integrity. |