why does my double glazing steamed up on the outside

We have discussed this before, but new windows are normally a fantastic way to improve both the appearance and thermal comfort of your home. New double/triple glazing tends to retain far more heat within the home, minimising the time your heating needs to be on as well as keeping rooms at a more stable internal temperature. New windows also tend to help reduce condensation on the glass, because the internal pane of glass is that much warmer than single glazing, so the moisture in the air doesnвt condense on it, helping keep the windows mist-free! Condensation forming between the panes of glass is common in slightly older double glazing в the reason for this is normally because the airtight seal on the double glazing unit has broken down, allowing air to enter the space between the two pains. A problem we are beginning to hear quite a lot about though is condensation appearing on the outside of the window, and as you might expect people arenвt happy about it! Imagine forking out thousands of pounds for new windows only for condensation to form on the outside of windows, ruining the views out of your home. Why does condensation form on the outside of new double glazing? Unfortunately, condensation forming on the outside of new double glazing is a natural phenomenon and it arises because the window is working so well at preventing heat loss from your home. Condensation is defined as the process by which a gas turns into a liquid. If the temperature of an object falls below what is known as the dew point temperature, then water vapour from the air will condense on the object s surface.


The dew point varies according the amount of water in the air (compare a shower room to a sitting room for example) and the temperature of the air. The warmer the air, the more water vapour it can hold в but it can only hold so much, so if this saturated air encounters a surface that is below the dew point temperature then it will condense. The reason water condenses on the outside surface of the glass is the temperature of the glass drops below the external dew point temperature. The new double or triple glazing units tend to have inner panes made up of low emissivity glass and this prevents the movement of heat across the glazing unit, so the outer pane never gets warm. As mentioned at the beginning of this article, condensation forming on the outside of your new windows is actually an indication that your new windows are performing very well, although we appreciate it is not ideal! Unfortunately, there is nothing that can be done to reduce this phenomenon occurring, however the good news is that it only occurs in very specific circumstances в a combination of high relative humidity and clear cold conditions normally experienced in Spring and Autumn. If you are experiencing this type of вexternal condensationв the only real way to get rid of it is to take a towel to your external windows. Or, when the sun rises andВheats the outer pane of glass, condensation will tend to evaporate.
Why is My Double Glazing Steamed Up?


Smears and drip marks down your clean glass is annoying to say the least, but constant condensation on your double glazing can be symptomatic of much bigger problem. There are many reasons why your double glazing may be steamed up and the first step to remedying your condensation problem is to identify where the condensation is forming. Condensation on the inside of your windows occurs when moisture from inside your home hits the coldest point of contact, which is usually your windows, and forms condensation. This moisture can come from hanging washing to dry inside your home, cooking or showering and can be an indication of poor ventilation rather than issues with your double glazing. Try opening your windows frequently to improve air-flow and prevent a condensation build up. Condensation on the outside of your windows is normal, and is actually an indicator that your double glazing is highly energy efficient, keeping the warm air in your home and preventing the temperature dropping to the same conditions that are causing condensation to occur outside. Condensation between the panes of glass in your double glazing is a big problem as it means that your double glazing is no longer functioning as it should. Condensation in between your glass panes usually only occurs in old units that need replaced, so If your unit is under 10 years old and showing signs of condensation between the panes, contact Lee Glass Glazing so that we can help perform a quick, efficient glass replacement service.


There are a number of reasons your unit may be developing condensation between the glass, including: Poor installation that left holes around the window seals which allow moisture to collect between the glass. If a unit isnвt installed correctly, this can occur within just 12 months of purchase. To avoid this, you should opt for fully qualified and reviewed fitters. Look for personal recommendations or Chemical damage can break down the sealant of a window over time, leaving it vulnerable to water seeping through. This damage is usually caused by harsh solvents, oil-based cleaning products or even washing up liquid. requires specialist help in the accurate measuring and installation of replacement units toВ ensure your windows are properly insulated. Look no further than Lee Glass and Glazing for a dedicated team of accredited experts to restore your double glazing back to a high standard. What s more, any double glazed unit supplied and installed by Lee Glass Glazing comes with a five year guarantee. Lee Glass and Glazing are one of the leading experts in glass products and servicing across Nottinghamshire. With over 45 years of experience in both domestic and commercial projects, you can rely on us to deliver outstanding customer service and expert technicians. For more information on our products and services, here and weвll be happy to help.

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