Soil stack airtightness

[Selfbuildsarah]

Our timber frame is nearly up and we have a roofer and builder lined up for external work. I don’t think our roofer is familiar with airtight, timber frame or our builder 😬 We have been advised to use ProClima Roflex gasket and Tescon Vana tape to seal soil stack. Apologies if this is a silly question (mine usually are) but is this for penetration through the roof tiles or lower or both? Should we also be using a special flashing? Our roofing will be Danum TLE system. We are going to have to explain this clearly to roofer and builder this morning!

[Bramco]

Would it be possible to run a soil stack up the side of the house? We did this to avoid having a penetration through the roof.

 

All internal soil locations have air vents. The external one runs vertically parallel to a downpipe, so isn't too out of place. It connects to the sump where all the internal ones come together.

[Selfbuildsarah]

Thanks Branco. We did think about this. We will have a further chat with builder this morning.

Presumably we will have to get the OK with building control first if we choose to do that?

Edited 2 hours ago by Selfbuildsarah
Omission

[Russell griffiths]

Where is your technical drawing showing the location of your airtight layer. 
is it showing the vcl at ceiling level or roof level. 
you need to imagine and show the roofer/ builder an image of a continuous line around the whole property with no gaps or breaks in it. 
from ground floor to roofline a continuous air barrier.