under floor board vent

[desrob]

the mi asks for a vent of 15cm2, so if going under the floorboards to an outside wall does that make the floorboard vent 22.5cm2

 

[diamondgas]

That's pretty tiny mate but haven't you got to duct any vent under the floor these days so there'll be no increase in size yeh? I'm shakin the grey matter ...lol

 

[villa_tom]

Any vent under floor space needs to be ducted DG. So your spot on. If its not then its NCS. but obviously only if you find it that way, we can't fit it that way and NCS it.

 

[desrob]

That's pretty tiny mate but haven't you got to duct any vent under the floor these days so there'll be no increase in size yeh? I'm shakin the grey matter ...lol

yes your right, 22.5cm2 is not that small,can you buy ducting kits ,because the vents on the opposite side of room to outside wall,long run,punters idea,

 

[Billy Bob Bob]

yes your right, 22.5cm2 is not that small,can you buy ducting kits ,because the vents on the opposite side of room to outside wall,long run,punters idea,

sure its not 225cm2?

 

[desrob]

sure its not 225cm2?

225mm2 it's for a gas fire

 

[Billy Bob Bob]

225 cm2 is a huge vent,in old money thats a 8 inch round hole

 

[desrob]

225 cm2 is a huge vent,in old money thats a 8 inch round hole

i know it's you and diamond fella saying my hole is to small.?

 

[stevetheplumber]

duh miscalc

 

[GrahamM]

Any vent under floor space needs to be ducted DG. So your spot on. If its not then its NCS. but obviously only if you find it that way, we can't fit it that way and NCS it.

A floor vent only needs to be ducted if the floorspace communicates with another property.

 

[Nostrum]

Since when?

 

[GrahamM]

Since when?

Since it stated it in BS5440-2!!!

 

[kirkgas]

Under floor vent from an individual property doesn't need ducted, a duct is only required if the solum is shared or if there is a potential for radon gas to draw through the ground and get into the appliance, this isn't a recent change