Plastic Sheet - Roofing?

EKEA

What is the name of the black polythene sheeting you get for roofs?
"Polythene Sheet" doesn't show what I am looking for on B&Q. I am sure it's used for roofs to weather protect the underneath.

If anyone has any other cheap plastic sheeting (must be a colour not see through) then I would be happy to see links.

The size I need it about 5m x 5m

Prothet_of_Doom

Roofing Felt.

DevCoder

I know the stuff you mean as I got some to cover the walls of the bathroom whilst it was being refitted. It also served to cover the hedgehog house I did for my daughters school project. It just doesn't show up on the b&q search.

Came in pack of 4mx4m I think so you'd need two and some duck tape. It was in the tarpaulin section.

ian103

http://www.wickes.co.uk/invt/240059?

http://www.aqualinersdirect.co.uk/roof-liner/shed-roof-liners