How to route ducting down from the loft

[Post and beam]

Good morning guys.

I have been playing with a design of ducting. The Plenums will probably been in the loft and i intend to use 90mm Ubink.

There should be space in the stud walling, not certain of that bit but thats another question.

Assuming i can drop vertically within the studwork how do i deal with the top and bottom stud work horizontals? Have i even explained that well?  The intermediate floor is made of P10 253mm Posi joists so that should be ok.

Thanks in advance as always

[crispy_wafer]

hole saw. try to remember where the ducting drops so you don't fix skirting there. 

 

I was going to do similar, but I built in a cupboard  and framed a section of it off for dropping ducting between floors and other stuff.

[Post and beam]

1 hour ago, crispy_wafer said:

hole saw. try to remember where the ducting drops so you don't fix skirting there. 

 

I was going to do similar, but I built in a cupboard  and framed a section of it off for dropping ducting between floors and other stuff.

I get the idea of a cupboard of some kind to hide the drop.

Cannot see how a hole saw would help. Ducting is 90mm and i guess the framing of the stud wall is 100mm as the most. Sort of destroys the stud frame from what i cant imagine

[markc]

Just now, Post and beam said:

I get the idea of a cupboard of some kind to hide the drop.

Cannot see how a hole saw would help. Ducting is 90mm and i guess the framing of the stud wall is 100mm as the most. Sort of destroys the stud frame from what i cant imagine

Unless it’s a structural wall then cutting the header and footer is frowned upon but not a problem. If the wall is structural then you shouldn’t do it.

[crispy_wafer]

As my receeding hairline has found out, unless designing something in from the start, with the person who is doing your drawings, then the odd compromise, or change from the normal lines of thinking is absolutely needed to make your dreams a reality.

[SBMS]

6 hours ago, markc said:

Unless it’s a structural wall then cutting the header and footer is frowned upon but not a problem. If the wall is structural then you shouldn’t do it.

This is what we did with two vertical

drops. Holesaw through the header and footer. In hindsight might as well have just left a 100mm gap when building stud wall! Wall not structural, both sides being plasterboarded so boards bridged the ‘gaps’ (there weren’t actually gaps as there was about 5mm of timber left each side of the hole). 

[Post and beam]

On reflection i think i will have a double thickness stud wall with a small gap between. It will drop down through the first floor landing between one of the bedrooms. Should only add 180mm to the thickness of that wall.