Replacing Greenhouse glass

I've got a few replacement polycarbonate sheets in mine - mainly because I find it easier to cut to size and I happen to have some used sheets laying around from when the house had secondary glazing. Mine let the same amount of light through I think.

I've never worked with that twin walled stuff, I suppose you cut it to size with a saw. You should get an insulation benefit. I was also going to say it would be difficult to fit on my greenhouse because of the thickness, then I see it's only 4mm thick so the glazing clips should work OK. However I wonder how strong it is, it might be very flimsy.

 

I think there are quite a few threads on this one, mowgley There's definitely a difference of opinion in whether you should replace glass with glass or with polycarbonate!!

 

Twin walled polycarb can't let as much light through due to the structure between walls. Doubt it would make a huge difference but it might be important to some?

Not considering the acrylic/perspex route?