non breathable felt

[topgunhorse]

Your comments please.
My parents house was re tiled and the felt used was black plastic. The loft suffers from terrible damp due to condensation on the plastic.
I have limited experience with rooves, but the ones I have worked on tyvek or similar was used.
I know it's exceptional weather we are are having, but the question is this: What are the advantages of plastic felt that made them use it in the first place?
My mum n dad have a large bungalow. I guess I'd like to be able to say the wrong felt was used. So to get the other side of the coin, what is your view?
Thanks for reading. Kind regards Andy

 

[freddiemercurystwin]

There is no need for a breathable membrane provided the existing roof had adequate ventilation. What ventilation has it got?

 

[RoofingPro]

The condensation will more than lightly be down to poor ventilation, this can easily be solved by venting the soffits to allow a flow of air between the rafters, addition tile or ridge vents can also be installed. This should be the quickest and easiest solution.

 

[noseall]

The condensation will more than lightly be down to poor ventilation, this can easily be solved by venting the soffits to allow a flow of air between the rafters, addition tile or ridge vents can also be installed. This should be the quickest and easiest solution.

Isn't that what Freddie said...?

 

[RoofingPro]

just reinforcing freddys comment, have you any constructive advice???

 

[freddiemercurystwin]

Calm down dear!

 

[RoofingPro]

No Probs

 

[sparkykink]

Is the old bitumen type felt still available, it seems these problems are with all newer types of felt?
my house has been partially re-roofed. I have the original tar based felt on one half of my roof with plastic on the other and it's raining with condensation on the half with the plastic.

 

[Alastairreid]

Is the old bitumen type felt still available

Type 1f underslating felt.

http://www.wickes.co.uk/Reinforced-Slaters-Felt/invt/240007