Telescopic vent in porch

[mrbg07546]

hi I have a telescopic vent for a porch which my brick layers are fitting tommorow.

The bit which goes on the inside, at what level should it be(given a concrete floor). Above or below (or level) with ground level?

 

[endecotp]

I remember your previous thread. I've no idea why you think you need a vent for a solid concrete floor. But I've never built a porch!

 

[mrbg07546]

Ok. Maybe for general ventilation? So I guess above ground level for vent?

 

[^woody^]

If it's for ventilation of the porch, then it should be at high level, 300mm down from the ceiling and 225mm in from a corner.

You're better off with a trickle vent in the windows though.

Or are you venting a timber floor in the house?

 

[mrbg07546]

Ok great. Thanks. No the timber floor in house Has a separate vent. That's all arranged.

I just wanted to confirm I didn't need any subfloor ventilation for concrete.