black on a hot tin roof

[stevewilliams]

Hi experts
I've got an outbuilding which I intend to convert to a workshop. It has a corrugated iron roof and once I put some warmth in there I am worried about condensation. There is no ceiling and I have been told there is no point doing this and insulating on top because it will obviously still 'rain' inside the cold space. I've had two suggestions - one is to bitumen the whole roof outside which sounds completely impractical and I've never seen another example anywhere (hot day, stink of tar!) and the other is to get someone in to spray the underside with foam to insulate and seal any cracks.

Your comments will be gratefully received.

Steve

 

[oilman]

Hi experts
................... I have been told there is no point doing this and insulating on top because it will obviously still 'rain' inside the cold space. ...........

Put in ceiling, vapour barrier, insulation and ensure there is ventilation between the insulation and the existing roof, that way water vapour will be prevented from getting from the workshop to the roof.

 

[Freddie]

Cold in winter and fry eggs on it in the summer---i leave the doors open to keep all the swallows that nest there cool in the summer

 

[greengrass]

Try this site they will come back with some ideas from experts or advice on what to buy and may be where to buy.

www.diydoctor.org.uk