best roofing for lean to to avoid condensation

[shahgidog]

hello,

could anybody recommend a roofing material for a large lean to. was thinking of using some kind of corrugated metal, but was wondering whether there are better options for reducing condensation?

thanks for any help.

 

[stonegate]

You could try epdm flat roofing membrane. Sizes are manufactured to fit most flat roof applications in a single sheet. It is just bonded to the substrate with special adhesive

Have a look at: www.flat-roof-repair.co.uk

 

[JohnD]

is this an unheated outbuilding, or is it a habitable room?

If habitable, you will want to insulate the roof and put in a moisture barrier to keep the warm moist air away from the cold roof.

Is there a ceiling?

If it is an unheated outbuilding, justr ventilate it well so the outside is about the same temp as the inside. A floor with no DPM will bring moisture into the building which will cause condensation.

 

[shahgidog]

Thanks for the responses guys.

is this an unheated outbuilding, or is it a habitable room?

weeeelll. it started off as a simple rebuild of an existing (50 year old) leanto with an earth floor which has all but collapsed, but as is the way it has turned into something a little more complex...

It is now:
- 10mx4.5m pole-barn type leanto, against a 7m wall, so 3 metres sticking out.
- the 3m sticky out bit is to be a sun room, with french doors opposite each other on 10m sides, and mostly glazed along the 4.5m end.
- the 7m part i was going to leave with earth floor.

i suppose for sunroom i'll need to do a DPM under floor, insulate roof, some kind of moisture barrier, then ceiling.

was going to stud between the two parts, but i suppose i'll have problems, with condensation running down on the uninsulated side.

I will have to think this through a little more...

thanks again