Aluminium greenhouse with asbestos panels - restoration job!
I have an old but mostly serviceable 'Guernsey Glasshouse' greenhouse which, at a guess, is around 40 years old. The main structure is fine and in good condition, but a couple of the bottom panels are damaged - in fact, one cracked the other completely missing. These bottom panels - each about 24" by 12" in old money - appear to be made of asbestos cement. I don't want to replace these by glass given the fact that I need to mow close up to each side. Does anybody have any ideas for suitable material to use as a substitute?