HOW MUCH CEILING SPACE DO I NEED FOR RECESSED DOWN LIGHTS?
The instructions provided with the downlights that you purchase will usually specify the minimum space needed in the recess above the ceiling in order to be able to fit the lights.
As a general rule aims for a minimum of 120mm of space in the recess above to allow for any movement of directional fittings and to accommodate any fire hoods and ensure ease of installation. Allow for a minimum of 50mm clearance all around in other directions for good ventilation.
The insulation should be cut back not pushed back as it will creep back if not cut.
If you have low-voltage downlights DO NOT cover the
transformer.
