Foamlite G. Foamlite G is a PE-HD-based lightweight plastic sheet. With a density of 0.75 g/cm³, Foamlite G has a weight advantage of more than 20 per cent mpared with mpact polyethylene at 0.95 g/cm³. The material boasts a superior surface quality, is optionally available with a smooth or grained finish and is very easy to process.