Hi I'm looking for something to waterproof roofs on some refrigerated lorry trailers that are used for storage they are mostly fiberglass with aluminium edges, which of your products would be most suitable and how bigger containers do you do, Each container is 2.8 meters by 13.5 meters Thanks Andy
Assuming the roof is bare, clean, dry, sound and prepared as detailed in the technical data sheet you could consider Rust-Oleum Mathys Fillcoat.
The coverage rate is 0.5m² per litre, for 37.8m² you would require approximately 75.6ltr.