If it is a truck tarp you want then you must have a Rip-Stop canvas. There are two types of Rip-Stop canvas that we recommend:
10440 – Waterproof and rot resistant, medium weight fabric designed for use
in tarpaulins with the added strength of two way Ripstop.
End use recommendations for medium to heavy duty road transport
32411 – Exceptionally strong canvas containing high strength corespun yarn
in the body of the fabric as well as two way Ripstop woven in.
Waterproof and rot resistant.
Premium quality fabric for heavy-duty tarpaulin used in road transport.
However for Curtainsiders you need a heavy duty PVC, we recommend 900gsm.
PVC gives flexibility and stretch enabling curtainsiders to work uninhibited when opening and closing, and give a good tight seal when closed.