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Cost of installing velux window

How much would fitting a small velux window to the stariwell (staircase to loft room) cost approx (labour + window + flashing)?

5 Answers from MyBuilder Window & Door Fitters

Best Answer

I would say in the region of £650 to supply and fit a velux window including all the necessary flashing, to make good externally and to line reveals internally as per the velux recommendations ie splayed so as to allow the maximum amount of light through the opening and to plaster the reveals internally.


Answered 21st May 2011

I would agree with last post regarding cost, please remember to inform Local Authority Building Control concerning the forthcoming project as you will require extra timber supports and robust detail to include insulation. VELUX supply something called a BDX collar, installed correctly this will allow the new window to comply with regulations. They also provide a thermal rating certificate for all windows.


Answered 11th Jan 2012

Aprox £300.00 depending on size and make of window


Answered 16th May 2011

Approx £400 for a 780x550 Velux window fitted


Answered 17th May 2011

Of course depending on the size of te window, but for an average size velux window installation you are looking at £320.


Answered 12th Dec 2022

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