Condensation On Outside Of Patio Doors

[Marijn]

I have condensation on the outside of my new double glazed patio doors. I'm glad it's on the outside as at least it means I can go into the garden and wipe it off, but I don't have this problem with any of my old double glazed windows, so I wondered what's causing it.

[rockyracoon]

We get it on our new double glazing at the front

[pixie373]

I imagine just the weather outside, warmer inside. It's really nothing to worry about if it's on the outside.

[Marijn]

I'm wondering if that means it's warmer outside than it is indoors, but that doesn't make sense, does it. It's not happening on my older double glazed windows that are only three foot away on the same wall.

[Mosaic]

I'm guessing that means you're older windows are not as efficient at insulating as your new ones.
This phenomenon must surely disappear as the morning progresses - which means as the outer skin of glass warms up.
I get condensation on outside of windows one side of the house at present, in certain types of weather - it soon disppears. I'm certain I will not be wandering outside to wipe it off.
There's only a problem if the condensation is inside the house or between the panes of glass.

[The Builder]

New glazing uses "low-E" (low emissivity) glass, Marijn. It's just a technical thing.

To save me a load of typing, have a read here...............

http://www.pilkington.com/EUROPE/uk+and+ireland/english/building+products/forhouseholders/frequently+asked+questions/windows+technical.htm

[Marijn]

Thanks so much Builder and Mosaic. Don't worry I won't bother wiping it off, I only do it when there's slugs and snails on there. I expect they clamber up on the glass for a drink of dew.