Installation guides
VELUX support
Vertical duo
Find all support information for your VELUX vertical duo solution here, from installation and maintenance tips to troubleshooting and repair advice.
Quick links
Self-service guides for vertical duo
What shall I do when my manual operated window (incl. roof balcony or roof terrace) will not stay open?
What should I do when I have condensation on my window?
What should I do when my windows appear to be leaking?
I cannot open / close my manual VELUX roof window
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Products related to vertical duo
Multiple window solutions (2in1, 3in1, horizontal duo roof windows)
Find all support information, from installation / getting started and maintenance tips to troubleshooting and repair advice for VELUX multiple window solutions.
Sloping and fixed
Find all support information, from installation and maintenance tips to troubleshooting and repair advice for sloping and fixed roof windows.
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