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How to fix flush ceiling lights of 5–10 kg to a timber joist

On a timber joist, fix flush ceiling lights of 5–10 kg with screws into a joist or a timber noggin, rated for at least 20 kg in a ceiling — twice the weight. Have an electrician or fitter fix it. 25 models state a weight in this range.

a timber joist · 5–10 kg · flush ceiling lights · change
  1. Find what is behind the ceiling
    This page is for a timber joist.
  2. Use the right fixing
    Screws into a joist or a timber noggin.
  3. Rated for the weight
    Rated for at least 20 kg in a ceiling — twice the weight. Have an electrician or fitter fix it.

Lights for this

25 lights

The numbers for this situation

  • Weight5–10 kg
  • Rated load to look for20 kgtwice the heaviest weight in this class, never under 5 kg
  • Needs a joist or nogginyes
  • Models in this weight25
  • Price from£103

Worked out, not measured

Where these numbers come from

  • Weight as stated by the supplier; the fixing is rated for twice the heaviest weight in the class and never under 5 kg, the minimum the wiring regulations (BS 7671) ask of a light's fixing. Checked against 27 matching lights in our catalogue snapshot of 2026-09-27; 25 can be bought now. Same sums on every page, release families-2026-09-29.

All the numbers

Weight (kg)Rated load to look for (kg)Joist or noggin
5–1020yes

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