In the Spring and Autumn we get thousands of visitors trying to find answers to their problem with internal and external Condensation it is that time of year again.
I have written about condensation elsewhere and the Glass and Glazing Federation (GGF) have free data sheets on (myglazing.com a new consumer website) explaining it in detail but there have been very few remedies for Internal and External Condensation .
This site is privately owned and it has very little income, however we never receive any sponsorship deals, kick backs or payment for advertising, so any article is entirely self generated on its own merits because we think it may help you to find a solution.
Internal and External Condensation, what’s the difference?
Internal condensation, (between the two sheets of glass) generally occurs because the perimeter seal has failed allowing moisture and air to be sucked into the cavity. once inside globules of water form and the unit is considered to have failed.
Undoubtedly the unit will not be working to the same efficiency as a perfect unit, but there is still two sheets of glass compared to one, so some efficiency remains. Traditionally there’s been just one solution, remove and replace the offending unit. That requires the original company doing it for free under their guarantee or finding a new installer who may see the opportunity to charge for a days work!
Well there is now an alternative but be careful there are some worrying comment on blog sites about claims being made concerning some of the systems being employed.
Put simply, the alternative is to drill a small hole into the failed unit, then wash the cavity with a high pressure jet and special formula, so that all the internal surfaces are coated which then prevents the units from remisting. There are a couple of companies now offering these services do try these people “Mist be Gone” or another company “Get the fog out”
Then there is the newer phenomenon of super efficient sealed units, getting condensation forming on the outside surface, over night know as external condensation. This is no different from car windscreens, but we are far less tolerant about it forming on windows!
Again there is very little that can be done, we have heard of some people putting cling film onto the outside and taking it off in the mornings, whilst others are resigned to wiping it dry with a cloth.
We have suggested a company called Ritec and their clearshield in the past, as they have a system that can be applied to glass, so that rain is dispersed immediately, either forming globules which run down the glass or dispersing like oil on water. It can be applied onto windows insitu or ordered with your new windows.
We have yet to have any feedback regarding the success of these products so please don’t take this as recommendation, simply helping point you towards companies that claim to provide solutions on condensation problems.