DIY Doctor UK DIY Forums

Hi guys,
Have an existing loft conversion that has an uninsulated eves in one side for storage with a small hatch on the purlin wall for access.

The Purlin wall is insulated, but the small door seem to let in cold air.

I want to use the eves for storage, but its not insulated and gets very dusty as this side of the roof is facing the road.

here is a picture as I would describe it.(ignore the bad drawing)
Please see -1St Picture

So, over the weekend, in my wisdom I decided to insulate the underside of the roof timber with foil insulation, and I think I have stopped most of the draft and dirt coming in. In my head there is still plenty of ventilation above the foil to keep the timber healthy? Have I thought this right?

Here is where I have added a foil .
Please see 2nd picture - with fil location

here is a picture of my foil work. :)
Please see photo

Have I thought this right? Its nor perfect, I just wanted draft & dust to stop, it probably isn't fully wind-proof, but thats ok.

Is this going to cause issues of condensation in the roof rafters? Have I messed up?

I could have used PIR insulation between the rafters, but the hatch door is small and would have made the job very difficult. I mainly want the wind and dust to stop and am aware that the foil won't stop the cold coming in.

But now I am concerned that its going to cause condensation.
Or am I over thinking this? as there is over 100mm ventilation above the foil and the roof tiles?

Hi shock999,
Since you have breathable felt fitted both under the tiles and under the rafters with ventilation between the two you should not have any issues with condensation.
.Regards S