Activent Glass Roof Windows and Skylights for Sheds, Cabins, Summerhouses and all Timber Garden Buildings

For the cost, I expected better. Bought the double glazed version with screw opener. DoubleGlazed panel doesnt seal all the way round when shut which defeats the purpose of fitting double glazing to an insulated roof. Bracket that the screw opener attaches too is to thin and flimsy, when you get the window shut, it continues to bend. Not convinced it would stand up to someone trying to force it open from the outside. So while it successfully provides light and ventilation, I feel it compromises insulation and security so I will have to tweak the window to resolve these.