Panel Lights in insulation...

South Spark · Nov 18, 2019

Does anyone know about how much of a void in insulation is required for lights like these?

Putting downlights in a loft conversion and if I install standard size ones I'll be creating some serious cold spots.

LED Slim Round Panel Light

Low profile downlights • Cool white 4000K• Non dimmable• 20mm depth• Average life 25000 hours6W: Diameter 120mm, depth 20mm, cut-out 105mm8W: Diameter 145mm, depth 20mm, cut-out 130mm12W: Diameter 170mm, depth 20mm, cut-out 155mm18W: Diameter 225mm, depth 20mm, cut-out 210mm

www.toolstation.com

Tony Way · Nov 18, 2019

Just buy the metal insulation guards from screwfix and lay the insulation over the top. No cold spots and the lights are protected from the usual important items (junk) stored there.

Baddegg · Nov 18, 2019

Would’ve matter with leds to be fair as the heat is practically non-existent,but you never know if some lunatic will replace em for halogens...is the ceiling already up? If not just cut a 100mm hole out,if the ceiling is already up you’ll have a job cutting out for the retaining springs as the biggest hole you’ll make is the same size as the lamp cutout....how is the cable run because that does matter?

South Spark · Nov 18, 2019

Tony Way said:
Just buy the metal insulation guards from screwfix and lay the insulation over the top. No cold spots and the lights are protected from the usual important items (junk) stored there.

It's a loft conversion ( not a very good one) 4x2 roof joists and felted ply so only 100mm to play with.

Tony Way · Nov 18, 2019

South Spark said:
It's a loft conversion ( not a very good one) 4x2 roof joists and felted ply so only 100mm to play with.

Ouch.. - Just realised what you are trying to do. have to say, cold spots might be the only answer, although as badegg says, you can go pretty tight with LED, although drivers still need a bit of breathing room to prevent early failures.