Expanding Foam

[Conkers]

Would that actually work? Maybe some improvement with side impact, but if the type of expanding foam that builders use, it would just flex and give and turn to mush..... I filled the cavities in my glass fibre gp bodykit that I got from chester with expanding foam, and it keeps the gravel out of the side skirts, but thats about it... 2 months in and it is falling apart.

So no.... I doubt it would do much good. What about concrete?

Conk