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0 pointsthrow0101a3y ago0 comments

> I do see your point, you believe the air near the uninsulated wall will have even more moisture because it’s now the only cold wall out of 4 walls. So all the moisture goes there instead of being split in 4.

The air will not have more moisture, but rather all the moisture problems will be towards/on the uninsulated wall.

> But a wall will stop condensating water when reaching a certain degree of humidity. So I’m not entirely convinced one can simply divide the amount of humidity in the air by the amount of uninsulated walls (or sqm).

Condensation will never stop on a cold wall until all the moisture in the air is removed. If you boil a pot of water the air will fill with moisture, and the entire house will have a high humidity. But because one particular wall is cold because of a lack of insulation the condensation (water going from vapour to liquid phase) will be concentrated on that particular wall.

The condensation will continue to occur as long as you continue to add moisture to the air via cooking and bathing (hot showers, baths).

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illiac7863y ago

Say you have a room completely insulated except for 1 sqm. Will the entire moisture condensate on 1sqm? That could represent 1cm of water on the wall, that's physically impossible. There's a maximum amount of moisture that can condensate per unit of surface, it cannot be infinite. Where does the water go after condensating? Even if you consider it drips down and stays on the floor, the amount of water on the wall at any given time still has a maximum.

That's the bit I am missing here, it just does not add up, condensation is not something that simply keeps accumulating water on a wall if it's cold enough, there's a saturation at some point. The question is, how fast is this saturation reached? If it's fast, then isolating one out of 3 walls may not create additional moisture on the non-insulated wall.

Sorry, I hope I don't come over as being stubborn, I'm genuinely interested in insulating (I have to do it at some point), I just like to understand things and so far I do not understand why isolating 3 walls out of 4 would generate additional moisture on the remaining wall.

ClumsyPilot3y ago

'That could represent 1cm of water on the wall, that's physically impossible. There's a maximum amount of moisture that can condensate per unit of surface, it cannot be infinite. '

' I do not understand why isolating 3 walls out of 4 would generate additional moisture on the remaining wall.'

you gey problems with mold way before you are anywhere near 'the physical limir of condensarion'. You dont want to be near it.

The question is not whether the amount of consensation will double or quadruple. It is weather you will have mould problems. If your wal starts getting wet, you will have mould peoblems.

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