"Steve Jones" wrote in message
...
I am sat here watching some roofers on the house opposite. Instead of
roofing felt they are using some thin plastic type stuff which is green on
one side and white on the other. What is this stuff? Surely it won't
provide as much insulation as traditional felt?

Steve

I presume you mean under the tiles. There are several super duper types
nowadays which are breathable one way , insulated, extremely strong 25 yr
guarantee etc.
I think screwfix list one type.

mrcheerful