How can I repair cracked greenhouse glass?

We’ve had an email from Siobhan:

I’ve got a repair question for you. A pane of glass in my greenhouse cracked over winter and I want to make it safe. Is there anything I can do short of replacing it? Thanks!

You can fix it temporarily with tape – duct tape works apparently or you can get special transparent UV stablised repair tape – but from what I’ve read, they’re really supposed to be temporary measures until you replace it ASAP, lest a giant shard of the weakened glass break off and spear you through the eye. (That said, I’m pretty sure my dad had broken glass panes in his greenhouses for the bulk of my childhood without any problems. No eyes gouged out here.)

Random pieces of glass come up quite regularly on my local Freecycle/Freegle group and from local sellers on eBay so if your area is anything like mine, you should be able to pick up a replacement quite cheaply.

Any other suggestions?

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One Response to “How can I repair cracked greenhouse glass?”

  1. paul says:

    i repair greenhouses it is always better to replace the glass but if not you can use a tube of clear silicone sticks to glass and you cannot pull it off.

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