avabanana Posted February 7, 2021 Share Posted February 7, 2021 Hi guys, This winter has seen our van practically raining inside over all the tools. I am looking into preventing this from happening and looking for opinions on the cheapest most effective methods. I really only need to do the roof to stop droplets dropping down into opening boxes and electrical items on shelves etc. Ta Link to comment Share on other sites More sharing options...
Russell griffiths Posted February 7, 2021 Share Posted February 7, 2021 I would go with 100mm rockwool and then battens and plasterboard how tall are you? Link to comment Share on other sites More sharing options...
SteamyTea Posted February 7, 2021 Share Posted February 7, 2021 Can you plug in a small, cheap, dehumidifier every evening? Link to comment Share on other sites More sharing options...
PeterW Posted February 7, 2021 Share Posted February 7, 2021 How old is the van ..? Cheapest and quickest way (which is permanent so not suitable for leased vans..!) is to buy some of the yoga or camping mats and cut them to shape then glue to the roof panels with contact adhesive. Best to try and get the fire retardent ones but that will stop condensation forming. also be aware it may be due to high humidity in the van due to a leak letting rainwater in, or even a heater matrix leak which is increasing the humidity causing condensation. Link to comment Share on other sites More sharing options...
SteamyTea Posted February 7, 2021 Share Posted February 7, 2021 2 minutes ago, PeterW said: even a heater matrix leak which is increasing the humidity causing condensation Had that once, took ages to work out what it was. Link to comment Share on other sites More sharing options...
Nick1c Posted February 7, 2021 Share Posted February 7, 2021 I put a solar powered fan in the roof of my van. Obviously no good at night, but helps keep moisture levels down. Are you sure you have no leaks? Link to comment Share on other sites More sharing options...
nod Posted February 7, 2021 Share Posted February 7, 2021 52 minutes ago, avabanana said: Hi guys, This winter has seen our van practically raining inside over all the tools. I am looking into preventing this from happening and looking for opinions on the cheapest most effective methods. I really only need to do the roof to stop droplets dropping down into opening boxes and electrical items on shelves etc. If you add a Fletner air circulator It will cure the problem overnight £72 on eBay Link to comment Share on other sites More sharing options...
joe90 Posted February 7, 2021 Share Posted February 7, 2021 Funny but when I bought a shipping container for tools and building stuff I always had plans to insulate the roof but never required it, not a drop of condensation, could not believe it, no idea why? Link to comment Share on other sites More sharing options...
scottishjohn Posted February 7, 2021 Share Posted February 7, 2021 thin stick on polystyrene wallpaper ? Link to comment Share on other sites More sharing options...
ProDave Posted February 7, 2021 Share Posted February 7, 2021 A joiner I was working for recently fitted a small diesel heater to heat his van, not sure if it was an Eberspacher or which make, but often used as cab heaters and boat heaters. Link to comment Share on other sites More sharing options...
dpmiller Posted February 7, 2021 Share Posted February 7, 2021 ^ chinese clones of those are outstandlingly good value. Link to comment Share on other sites More sharing options...
scottishjohn Posted February 7, 2021 Share Posted February 7, 2021 a heater will only work when its on - stopping the cold surface from getting condensation ,by insulating it is a better idea +cheaper--unless your going to run the heater 24/7 in winter why do think you car does not get wet oninside of roof ? cos of the headlining Link to comment Share on other sites More sharing options...
avabanana Posted February 10, 2021 Author Share Posted February 10, 2021 Thank you all for your input. Frankly struggling at the moment to stay on job schedule with inundated tool/ machine/ vehicle/ staff problems. Prolly gonna wait out this winter and sort the problem during the summer. Link to comment Share on other sites More sharing options...
Dave Jones Posted February 10, 2021 Share Posted February 10, 2021 On 07/02/2021 at 11:12, joe90 said: Funny but when I bought a shipping container for tools and building stuff I always had plans to insulate the roof but never required it, not a drop of condensation, could not believe it, no idea why? no heat inside it ? Link to comment Share on other sites More sharing options...
joe90 Posted February 10, 2021 Share Posted February 10, 2021 1 hour ago, Dave Jones said: no heat inside it ? Nope, frankly I don’t understand, but then again it’s in good Nick and the door seals are in good condition. Link to comment Share on other sites More sharing options...
Big Jimbo Posted February 10, 2021 Share Posted February 10, 2021 Only guessing, but my vans over the years have been fine when new. A bit of condensation at about 5 years old. By 10 years i'm scraping ice off the inside of the windscreen. My thoughts are the door rubbers go flat, and perhaps start to rot out a bit. That lets the moist air in. Link to comment Share on other sites More sharing options...
SteamyTea Posted February 11, 2021 Share Posted February 11, 2021 (edited) I have noticed that if I use the A/C in the car, during certain times of the year, after it has been parked up for a while, mist is on the screen. Usually happens in the summer after I have been at work for a few hours in the evening. 10 hours ago, joe90 said: I don’t understand It is because it is at the same temperature and humidity as the ambient air and there is no liquid water in it to evaporate. Edited February 11, 2021 by SteamyTea 1 Link to comment Share on other sites More sharing options...
Dave Jones Posted February 11, 2021 Share Posted February 11, 2021 10 hours ago, joe90 said: Nope, frankly I don’t understand, but then again it’s in good Nick and the door seals are in good condition. no heat = no condensation. Link to comment Share on other sites More sharing options...
scottishjohn Posted February 11, 2021 Share Posted February 11, 2021 14 hours ago, Dave Jones said: Funny but when I bought a shipping container for tools and building stuff I always had plans to insulate the roof but never required it, not a drop of condensation, could not believe it, no idea why? plenty of drafts - same temp inside as out- so no condensation Link to comment Share on other sites More sharing options...
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