Lighting Services in Manchester

Specify by lumens and colour temperature, not by wattage

Wattage told you how bright a bulb was when everything was incandescent. With LED it tells you almost nothing. Brightness is lumens; a traditional 60W bulb is roughly 800 lumens. What matters as much is colour temperature, measured in kelvin: around 2700K is warm and yellow and suits living rooms and bedrooms, 3000K is a natural white that works well in kitchens and bathrooms, and 4000K and above reads as cold and clinical in a home but is right for a workshop or garage.

The specification most people miss is colour rendering, or CRI. A low-CRI lamp makes skin tones and finishes look flat and grey. Above CRI 90 is worth paying for anywhere you cook, get dressed or apply makeup, and it is the difference people notice without being able to name it.

Where LED retrofits go wrong

The most common failure is dimming. A lot of older dimmer switches are leading-edge units designed for a filament load, and most LED lamps want a trailing-edge dimmer. Put the two together and you get flicker, buzzing, a very narrow usable dimming range, or lamps that fail early. Swapping the dimmer is usually the fix, and it costs a fraction of replacing the lamps again.

The second is integrated fittings. Many modern downlights and battens have the LED bonded into the unit with no replaceable lamp, so when the diode or driver fails the whole fitting has to come out. That is fine if you knew going in, and infuriating if you did not. If a fitting is going somewhere awkward to reach, choose one that takes a replaceable lamp.

The third is heat. LEDs fail from heat at the driver, not from being left on. A downlight packed tightly into insulation, or a fitting with no ventilation gap, will die years early no matter what the box claimed.

Downlights, fire ratings and loft insulation

Cutting holes in a ceiling removes part of the fire barrier between floors. Fire-rated downlights contain an intumescent seal that closes the hole in a fire and restores that barrier, which is why they are the right choice in any ceiling with a habitable room or a loft above it.

Separately, check whether a fitting is rated for insulation contact. Many are not, and covering a non-IC fitting with loft insulation traps heat around the driver and creates both a fire risk and an early failure. Where insulation cannot be held clear, a fitting rated for direct contact or a proprietary loft cap is the answer.

When new fittings are not the answer

Sometimes a room is not badly lit, it is badly switched. A single ceiling pendant controlled from one switch will always feel flat, and no amount of upgrading the fitting changes that. Splitting the lighting into layers on separate circuits - ambient, task and accent - usually transforms a room more than any lamp specification will, and it is a wiring job rather than a shopping exercise.

It is also worth saying plainly that if the existing circuit has no RCD protection, or the ceiling rose wiring is brittle and cracking, that is the job that needs doing first. Fitting new lights onto tired wiring hides the problem rather than solving it.