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Talkback: How to insulate a greenhouse

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  • Have just seen your comment, debeezdragon. I covered my little plastic greenhouse in horticultural fleece and bubblewrap - just held in place snugly by the outer plastic cover. This is the first year I have done this, so it remains to be seen how effective it is in protecting my plants
  • LoloLolo Posts: 1
    Half an hour to do the job!!!!!!!!!!!!!! No way.It would've been useful to read what temperature improvement there would normally be.
  • I was told that I could wet bubble wrap before fixing it to the greenhouse. I have tried this without a great deal of success. Can anyone tell me if they have tried this method and if they have had any success.
  • LynLyn Posts: 23,190

    Dont know why one should wet the bubble wrap, I  bought a big cheap roll of B.W. packaging and a couple of packets of standard clips and corner clips and away we went -- perfect, its worked well through our severe frosts nothing has died.

    Gardening on the wild, windy west side of Dartmoor. 

  • lolly2lolly2 Posts: 2
    just aquired a greenhouse and it has bubble wrap insulation should i leave it on or do i need to take it off during the summer
  • lolly2lolly2 Posts: 2
    I have just acquired a greenhouse which is insulated with bubble wrap,do I leave it on or do I take it off for the summer.
  • I agree; 30 minutes? Make that several hours if your green house is aluminium, as most are round our way, by the way. I suspect wooden greenhouses are an expensive luxury. Last year, I strung twister wire across the greenhouse and tented the bubble over it, then stuck shaped pieces either end with wide duct tape. Wasn't easy to get it to stick, and getting around the greenhouse shelf and door was very tricky. The bubble wrap (from a local garden centre) was quite expensive, and the method of fixing means that I am unlikely to be able to use it this year again. Not sure it was worth it, to be honest. Lost several nice plants which I would normally have kept indoors, had I not insulated the greenhouse, though it was an unusually cold winter. Did manage to overwinter a few herbs, but for the price of the bubble wrap, not to mention the time it took, I could have bought new herb plants this year instead
  • i did mine last year with bubble wrap..bought a big roll on line very cheap.. and cut it to the right lengths.. i held it in place with shading twist clips.. as used for aluminium greenhouses.. which mine is.. was easy to do.. didnt take long.. thou i only did half mine as large.. just sat all plants on one side... with window... and covered it and then made lift up door panels from teh top ridge down to teh floor weighted down.. it kept it very cosy.. and if it had been damp or bit too warm.. i could just lift up few door panels to get air round..

    will be doing it again this year..

  • figratfigrat Posts: 1,619
    I used to bubble wrap insulate the gh, but found it got quite damp with condensation. The last couple of winters I haven't bothered, but put fleece over stuff if it looks as though it's going to be really arctic. Mind you, bloke very kindly electrified one of my greenhouses so I also have the luxury of a heater which is meant to keep it frost free. Interested in idea of sectioning off a small area though.
  • @figrat.. yeah if you only have a small amount of plants to protect then doing half is better.. in otehr half were stuff that were as tough as nuts.. so didnt bother. i made sure i could open the window to aireate on warm days and kept condensation down along with the lift up doors.. i also put it on the shelves to help insulate that way.. give anything a go to see if it works meimage

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