VELUX Support

Vertical duo

Find all support information for your vertical duo solution here, from installation and maintenance tips to troubleshooting and repair advice.

Self-service guides for vertical duo

Important product safety warning & replacement information for VELUX sloped roof window

What should I do when I have condensation on my window?

I cannot open / close my manual VELUX roof window

What shall I do when my manual operated window (incl. roof balcony or roof terrace) will not stay open?

Find all support information, from installation and maintenance tips to troubleshooting and repair advice for multiple window solutions.

Find all support information, from installation and maintenance tips to troubleshooting and repair advice for sloping and fixed roof windows.

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