1000g Builders Polythene 15 x 3.5mt also used as a vapour barrier.
The Laydex 1000 gauge polythene - black is a non-reinforced polythene film.
This roll of heavy duty sheeting is used on building sites, home, and in the garden.
Black polythene deteriorates at a much slower rate than clear polythene when exposed to UV light.
Laydex polythene is also tear resistant.
 
(Don't forget carriage)