I wrote and article about French Doors with Built In Blinds awhile ago and numerous people have asked how to repair these type of window treatments if they get damaged. The answer is not one most people want to hear. Almost all of the doors and windows sold today with blinds between the glass are not easily repairable.
Most manufacturers are installing the blinds inside a sealed thermal window assembly. Because of this the only way to get at the blinds and therefore repair them is to take apart the thermal glass assembly, thus rendering it useless. For a majority of these windows and doors you’ll need to buy the sealed glass assembly and replace it.
This doesn’t mean the entire door or window must be replaced. This just means that you’ll be replacing the entire insulated window assembly just as you would if you broke the glass.
At least one manufacturer is building units that the shades are enclosed in a separate piece of glass and snapped into place. This allows for you to remove them, change them or replace them without needing to replace the main glass assembly. Having said all that we have two French Doors built by ThermaTru with blinds between the glass and so far after 4 years we’ve had no problems.
If you end up having trouble with the blinds I’d start by contacting the manufacturer to see which type of system you have. At the very least you should be able to buy a replacement assembly to replace the damaged blinds.
If you own a Therma-Tru door then here is the Customer Support Link.
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