Suspended floor insulation.

[excited]

Thinking of a suspended timber floor in the new extension, What is the minimum distance needed to allow air to circulate beneath the suspended floor insulation.


Thanks

 

[tony1851]

Min. 150mm below the underside of the joists.
Underside of insulation would presumably be higher than the underside of the joists?

 

[excited]

Ah that's not good Tony, I have in total 150mm. Out of that there would be 100mm for the joists with 100mm insulation between joists.

So really only about 50mm air gap. Wonder if I could get away with 50mm, if I have a few more airbricks'.

Thanks