Discovered en-suite extractor fan vents to attic

dr_bogenbroom

Whilst laying additional insulation I discovered the extractor fan just terminates in the attic - can I resolve this DIY by terminating it out of the gable end or should I get a pro in to vent out of the roof? 

Grenage

I would opt for the gable.  Less interference with the roof.

ThisIsWeird

What are your options, DrB?
I
Do you have clear access to the eaves, for example, and could you cut and fit a grill to your soffit for this? By 'gable', do you mean core-drilling through the wall? If so, could you do this neatly?

dr_bogenbroom

ThisIsWeird said:

What are your options, DrB?
I
Do you have clear access to the eaves, for example, and could you cut and fit a grill to your soffit for this? By 'gable', do you mean core-drilling through the wall? If so, could you do this neatly?

No clear access to the eaves unfortunately- gable or roof are the only options. Could I core drill neatly?? I’d have thought not! But I can practise…

FFHillbilly

try not to use flexible ducting, it reduces the amount of air the fan can move.
solid ducting to the gable end would be a good idea, how far is it from the fan?

Nobbie1967

dr_bogenbroom said:

ThisIsWeird said:

What are your options, DrB?
I
Do you have clear access to the eaves, for example, and could you cut and fit a grill to your soffit for this? By 'gable', do you mean core-drilling through the wall? If so, could you do this neatly?

No clear access to the eaves unfortunately- gable or roof are the only options. Could I core drill neatly?? I’d have thought not! But I can practise…

You can core drill very neatly if you can drill from both sides and have a powerful SDS drill. You just need to be patient and let the drill do the work.

FreeBear

Nobbie1967 said:

dr_bogenbroom said:

ThisIsWeird said:

What are your options, DrB?
I
Do you have clear access to the eaves, for example, and could you cut and fit a grill to your soffit for this? By 'gable', do you mean core-drilling through the wall? If so, could you do this neatly?

No clear access to the eaves unfortunately- gable or roof are the only options. Could I core drill neatly?? I’d have thought not! But I can practise…

You can core drill very neatly if you can drill from both sides and have a powerful SDS drill. You just need to be patient and let the drill do the work.

If you are working at height outside, think very carefully before using a ladder. A much safer option is a scaffold tower or a scissor lift platform. If you must use a ladder, put a couple of eye bolts in the wall high up and use a length of rope to tie the ladder in.

jonnydeppiwish!

I’d go for a tile vent to be honest. To me it would be simpler and possibly a shorter distance to outside

GDB2222

Can I ask a question to demonstrate my ignorance. What is wrong with venting into the roof space, assuming that it is well ventilated? Is it causing damp problems? Smells?

ThisIsWeird

GDB2222 said:

Can I ask a question to demonstrate my ignorance. What is wrong with venting into the roof space, assuming that it is well ventilated? Is it causing damp problems? Smells?

Both, I guess! But mainly the risk of damp - condensation.
But, as you suggest, with certain wind conditions, the air in the loft can be driven down to some rooms, but I guess DrB hasn't knowingly had that issue.

GDB2222

ThisIsWeird said:

GDB2222 said:

Can I ask a question to demonstrate my ignorance. What is wrong with venting into the roof space, assuming that it is well ventilated? Is it causing damp problems? Smells?

Both, I guess! But mainly the risk of damp - condensation.
But, as you suggest, with certain wind conditions, the air in the loft can be driven down to some rooms, but I guess DrB hasn't knowingly had that issue.

From his original post, he wasn’t aware of the problem until he started to put in some more insulation. Most lofts have plenty of air flow from the eaves. 

I was wondering whether a short length of duct to take the exit above the insulation but staying in the loft would suffice? If it saves hiring a scaffold tower, that’s quite MSE.