plastic shed and condensation

[marilynm]

Hello again, have just posted my first query, forgot about my shed query, here we go......I have a plastic shed in my garden and yesterday when checking for damage after high winds that inside the roof of the shed the ceiling was dripping with condensation! Can anyone advise on insulation for this type of shed....it has an integral plastic floor and sits on slabs...should I put a damp proof membrane under it, or would this not make any difference, I store seed products which should be kept dry and my house is very short on storage space so I need a dry shed, please can anyone offer help, many thanks, Marilyn.

 

[foxhole]

Plastic shed is a condensation trap, so unless you leave the door open store your seed elsewhere.

 

[big-all]

yep bad news plastic perspex metal all sweat/rain

not easy to insulate as there is usualy very little to fix to

your choices are insulate vent or cover whats in there with waterproof covering also worth placing on pallets

 

[Deluks]

Drill some holes in two opposite sides. Not too big and try to make them equidistant so it looks neat.

 

[marilynm]

Thanks for replies received, read and understood, my shed is a 'Keter' plastic garden shed with 4 ventilation ports in the back wall -2 equidistant at the top and the same again at the bottom. So, should I still have to drill holes? Marilyn

 

[Deluks]

Well if it already has vents that are doing no good then more probably won't make much difference. The moisture has to be coming from somewhere, do you put wet things in there or grow anything in there in moist soil?

If you can, fix some polystyrene sheet to the roof and south facing walls to keep the sun off.

 

[marilynm]

Hello again, no, I don't have anything planted inside the shed, I do have bags of multi-purpose compost, so suppose moisture might be being drawn from these, but, would it make a difference if I laid a damp proof membrane beneath the shed, and I will take on board polystyrene sheets on the roof....I could use the holes which are inside the mouldings on the plastic roof straps to fix with ties or wire.....I am so grateful for all the advice given so far....many thanks Marilyn.