Blocking a Velux Ventilation Flap to Stop Noise Post questions and find answers on glazing, double glazing, upvc glazing, conservatory glazing, fixtures and fittings etc....

[PiP59]

Nearly all veluxes come with a ventilation flap. The double or triple glazed acoustic benefit is lost as noise trickles in (unfortunately I have 8). Can anyone please suggest how these vents may be effectively blocked and sealed?