Velux trickle vent

PoGee

We get a bit of a breeze through the attic hatch into the hall  in winter. I usually block it off with insulation board and tape during this time of year. Should the velux trickle vent be open or shut? The roof is 2-3 years old and has around 5 vents and multiple vents on the soffits. 

WIAWSNB

The Velux trickle vent is for ventilating your room, and not the roof. 

If your roof is only 3 years old and has numerous soffit vents, that's good - just ignore it. The loft space will be cold and draughty, and that's exactly what you want - it'll be dry. As long as you have good 'loft insulation', then the loft has nothing else to do with ventilating your house. Ignore it. 

The Velux vent is to keep your room fresh, and remove excess moisture which would otherwise condense as droplets on the panes - is there any in the morning? 

Does this vent simply close by pushing the hinged cover back into place? That's what mine does.

Edit - I think I misunderstood. Where is this Velux? In the loft?! In which case it doesn't really matter if the Velux vent is open or closed, as the soffit vents already provide more draught than that! 

But, you need to get your trapdoor sealed properly. Does it lock down? If so, I'd have thought a strip of foam seal would do the job? And, is it insulated on top? 

Explain where this Velux is, please. 

PoGee

The velux is in the attic. I'd asked the roofers to fit the velux, in case I decided to make it into a loft roof. It's just used for storage at the moment. Yes, it's like a hinge that when pushed, seals the window. I wondered whether closing it would result in condensation within the attic. The attic insulation is farely thick.