My lovely greenhouse was trashed in the strong winds we had earlier in the year.  I lost about half of the glass.   :'(
Can someone explain to me the difference between using horticultural glass and 4mm glass - is it the same?
Also, can I mix glass and perspex/plexiglass with glass if I decide to replace the broken glass with that?
Thanks
			
			
			
				QuoteCan someone explain to me the difference between using horticultural glass and 4mm glass - is it the same?
Well the obvious difference is thickness. The 4mm is generally used in domestic windows and is of a better quality making it more expensive.
QuoteAlso, can I mix glass and perspex/plexiglass with glass if I decide to replace the broken glass with that?
There is no reason why you cant! but I wouldnt mix them in the same panel because the plastic types are more flexible than glass this flexing may loosen the more rigid glass.
Regarding costs;  the plastic alternatives work out more expensive and do not last as long!