Condensation on Breathable felt

Prior69 · 18 Jan 2011

I found that by getting air into loft by moving the insulation back from the soffit area worked.

Its been just as cold as it was last winter and I've had zero problems this year.

So I guess what I'm telling you is that you need to check the ventilation in the roof - if you cant make some ventialtion via the soffits you may need to get some vent tiles in.

datarebal · 27 Jan 2011

iyfvhvbjnl

Alastairreid · 28 Jan 2011

datarebal said:
iyfvhvbjnl

Thats what i was going to say

mgoo · 17 Mar 2011

"breathable" underlays are good but not magical.
They will allow a certain amount of moisture through but not a lot.
The secret to eliminating condensation in your roof is to stop the warm moist air getting into the loft in the first place.
Flush mounted cieling lights, poorly fitting loft hatches all will let vapour into roof.
You need to ensure adequate air movement in the roof ie ventilation.
Over fascia vents, vent tiles and vented ridge will all help.
ALso if you have upgraded your insulation make sure the insulation isnt touching the underlay over the wall plate.
Insulation interuptors are useful.

noseall · 17 Mar 2011

mgoo said:
"breathable" underlays are good but not magical.
They will allow a certain amount of moisture through but not a lot.
The secret to eliminating condensation in your roof is to stop the warm moist air getting into the loft in the first place.
Flush mounted cieling lights, poorly fitting loft hatches all will let vapour into roof.
You need to ensure adequate air movement in the roof ie ventilation.
Over fascia vents, vent tiles and vented ridge will all help.
ALso if you have upgraded your insulation make sure the insulation isnt touching the underlay over the wall plate.
Insulation interuptors are useful.

...er... i already said all that at the beginning of the thread..............LAST YEAR!

mgoo · 17 Mar 2011

noseall";p="1934558 said:
mgoo said:

"breathable" underlays are good but not magical.
They will allow a certain amount of moisture through but not a lot.
The secret to eliminating condensation in your roof is to stop the warm moist air getting into the loft in the first place.
Flush mounted cieling lights, poorly fitting loft hatches all will let vapour into roof.
You need to ensure adequate air movement in the roof ie ventilation.
Over fascia vents, vent tiles and vented ridge will all help.
ALso if you have upgraded your insulation make sure the insulation isnt touching the underlay over the wall plate.
Insulation interuptors are useful.

Click to expand...

...er... i already said all that at the beginning of the thread..............LAST YEAR![/quot

Err.....ok. medal? chest? pin?

freddiemercurystwin · 17 Mar 2011

mgoo";p="1934617 said:
noseall said:

mgoo said:

"breathable" underlays are good but not magical.
They will allow a certain amount of moisture through but not a lot.
The secret to eliminating condensation in your roof is to stop the warm moist air getting into the loft in the first place.
Flush mounted cieling lights, poorly fitting loft hatches all will let vapour into roof.
You need to ensure adequate air movement in the roof ie ventilation.
Over fascia vents, vent tiles and vented ridge will all help.
ALso if you have upgraded your insulation make sure the insulation isnt touching the underlay over the wall plate.
Insulation interuptors are useful.

Click to expand...

...er... i already said all that at the beginning of the thread..............LAST YEAR![/quot

Err.....ok. medal? chest? pin?

Click to expand...

The point is is there's no point just dragging up old threads for the sake of it!

mgoo · 17 Mar 2011

Understood. forgive me for trying to help.

noseall · 18 Mar 2011

mgoo said:
Understood. forgive me for trying to help.

If you are going to drag up an old thread at least add some new advice.....

Crack on Mags.

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Condensation on Breathable felt

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