No felt under roof slates - possible to retro-fit?

[ilikewatchingtv]

Hi all, I am currently boarding out my loft to allow for some storage, however, there is no felt under my roof slates, and lots of dust and muck gets blown into the loft under the slates.
I was wondering if it would be possible to fit a breathable membrane under the rafters to keep the interior of the loft a bit cleaner - I was thinking of something like Permavent Eco stapled to the underside of the rafters - does anyone know if this is adviseable, or would it create a new set of issues?

 

[^woody^]

You can do it without any issues

 

[ilikewatchingtv]

You can do it without any issues

Excellent, - thanks for the reply!

My next question is how I should attach the membrane to the rafters. In option 1 in the picture below the membrane is flat across the bottom of the rafters, in option 2 it is "wrapped" round the rafters - is either of these methods preferable to the other?

[/img]

 

[SurreyRoofingEstimator]

Option 2 would be a complete PITA to do and wouldn't gain you anything as far as I can see

 

[ilikewatchingtv]

Option 2 would be a complete PITA to do and wouldn't gain you anything as far as I can see

Thanks - i thought option 2 would be a PITA, and would also require twice as much membrane, just wondered whether option 1 would be more vulnerable to getting ripped off by heavy wind. Will give option 1 a go!

 

[SurreyRoofingEstimator]

If option 1 got ripped off in heavy wind then you'd have much more of a problem than dust lol