Fitting downlighters in a ceiling?

Stick a traditional flower pot over each on. That will allow some heat to vent and stop them getting smothered in insulation.

Hi,

Also use NON dichroic bulbs if you want any heat from the bulb to go down into the room and not heat the ceiling/loft.

cheers, Pete.

They should be sealed boxed in above the light to stop the damp from the bathroom going up their and rotting the roof timbers. You can leave the insulation above the box the heat can dissipate downwards into the room. Use plasterboard and fire proof mastic to construct the box.

Someone's been watching too much facile TV. Reasonable striplight(s) if a large room or if smaller, a ceiling located CFL is adequate.

What I choose to install in my own bathroom is not your concern. If you wish to post some useful advice on installing downlighters then please go ahead. Otherwise f*ck off, muppet.

Almost about all the downlighters you can buy are designed to dump the heat above the ceiling. Don't do this with one of those.

If you were particularly concerned about compromising a fire break, then there are products that address this as well:

Not wanting to get this wrong so what size?

I've got some 50W in the bathroom and kitchen ceilings that seem to attract woodlice which are subsequently grilled on the glass cover after falling into the fitting!

Its not that critical - a terracotta flow pot won't melt, and has a hole in the top. So long as it is big enough to cove the back of the fitting with a bit of space to spare it will allow some heat to escape.

Make the eclosure big enough and it wont be a problem.