PANIC! Mould found...

[JohnD]

yes, it is called duct

put a slight slope in it, downwards towards the outside so that any condensation runs outward, and flop loft insulation over the duct to keep it warm.

I recommend the cowel outlets with a single anti-backdraught fap, not the ones like miniature venetion blinds that rattle annoyingly. You can get white, black or brown or paint to match with non-drip gloss.

http://www.screwfix.com/prods/14789/Heating-Cooling/Ducting/Manrose-Square-Brown-140mm-Cowl-Vent

 

[jeds]

In fact, mould is always caused by condensation. The reason being that mould does not grow easily on contaminated water but likes clean pure water - i.e. condensation.

So what is causing the condensation? Most likely cold bridging through the adjoining party/external wall. So cavity insulation - as long as it carries some way along the party cavity - might well be very helpful.

Of course dampness can also cause - or at least worsen - cold spots on walls. So dampness may well be contributory, but is not likely to be the primary cause.

My advice is insulate, ventilate and keep the room a bit warmer. In the meantime, prevent the bed from touching the external wall. This will allow ventilation against the wall surface which will help prevent the mould growth.

 

[Milo19]

I've contacted several companies to get quotes for cavity insulation.

I was reading through my survey report for the house and the surveyor recommend some additional ventilation in the loft. Namely the soffit boards. I was looking at fitting the circular soffit board vents but I've got a feeling the soffit boards are asbestos. Surely I cannot drill through these?!

Im not prepared to risk it.

Can i not fit air bricks instead.

 

[jm2000]

I've contacted several companies to get quotes for cavity insulation.

I was reading through my survey report for the house and the surveyor recommend some additional ventilation in the loft. Namely the soffit boards. I was looking at fitting the circular soffit board vents but I've got a feeling the soffit boards are asbestos. Surely I cannot drill through these?!

Im not prepared to risk it.

Can i not fit air bricks instead.

Yes....if you have room. or a gable end.

 

[Milo19]

do i need a cavity tray?

Also, when venting the bathroom fan Im going to fit....Can i vent through the fascia rather than soffit for the reason mentioned before?