Cold bridge with new Ali Patio Door

[purplemonkey]

Hi,

we probably had this issue before but we had old wooden patio doors which have now been replaced with 4 Aluminium Patio doors, 2 middle openers with 2 fixed panes.

As its winter and we've had heating on, I noticed yesterday the whole bottom of the door set is dripping with water. I'm assuming this is a cold bridge. The bottom of the door set sits on an existing, raised uninstalled concrete slab which is between 1/2 and 2 inches (sloping) above floor level both inside and out. I assume this is causing the horrible bridge. My question, is there a way to retrofit something to solve this problem, or am I gonna have to remove the new doors and build a new structure? if the latter, I can't imagine thats going to happen so whats my best way forward, at the moment we are looking at just drying it when we notice, or leave towels there during winter.

 

[Bonni]

Water only condenses on cold surfaces, that's why I never have any kind of metal framed window or door. It's a case of getting plenty of heat on and wiping any condensation.

If mould appears, it means a lack of heat and/or ventilation.

 

[Notch7]

Even though ali window and door franes have a thermal break, they are still cold.

Maybe having the cill direct onto the concrete is making it worse too.

I suppose you could try an anti fog or rainx type product which makes it more difficult for moisture to stick onto hard surfaces -its a long shot, but for tge cost it might be worth a try.