Shed interior

Jupiter01 · 23 Jan 2020

I am planning to build a timber shed which is wrapped with OSB boards and wooden cladding on the exterior.

The shed will have a tumble dryer and chest freezer amongst other stuff...

how should I finish this internal to ensure it doesn’t develop mould or smell stale? Do I for instance use the moisture resistant plasterboard sir something else?

Also, should I wrap the studwork with breathable felt (or something else?) before externally lining with OSB boards?

Thanks in advance.

foxhole · 23 Jan 2020

No reason it should develop mould or stale smell.?Use the osb internally , clad exterior.

sircerebus666 · 23 Jan 2020

If you are planning to vent the tumble dryer to outside there shouldn't be any problems

Robbox · 25 Jan 2020

What are your winters like? There are freezers that work better in freezing conditions. It's possible that a dryer will also use more juice heating up a colder air intake.
Insulating the walls. floor and roof with Celotex or rockwool batts and making sure the doors/widows are reasonably draught proof, will mean the heat output of the freezer will maintain a reasonable ambient temperature and the dryer will use less juice heating the air.

Jupiter01 · 3 Feb 2020

I am just outside London - in terms of weather.
A couple of questions please:

Robbox said:
Insulating the walls. floor and roof with Celotex or rockwool batts and making sure the doors/widows are reasonably draught proof, will mean the heat output of the freezer will maintain a reasonable ambient temperature and the dryer will use less juice heating the air.

Given that there will be no heating in this shed, would it be helpful to use insulation in floor and walls? I was thinking that once the cold has penetrated the insulation, the interior will remain cold. Having no insulation will mean, that we immediately reach that temperature. Have I understood this correctly?

foxhole said:
Use the osb internally , clad exterior.

I've seen this being used internally on various Youtube videos. Is there any particular rationale to using OSB externally, followed by cladding on top? Also, do you recommend the use of a breathable membrane.

Finally, is it advisable to use moisture resistant plasterboard internally?

Notch7 · 3 Feb 2020

Jupiter01 said:
I've seen this being used internally on various Youtube videos. Is there any particular rationale to using OSB externally, followed by cladding on top? Also, do you recommend the use of a breathable membrane.

You could put the OSB board on the inside.

externally the best construction is:
put breathable membrane onto external studwork.
then fit 50 x 25 treated battens vertically
then fit your cladding

the membrane will give you a draught free, weathertight sealed room, but water vapour can still pass through
the cavity created by the battens is very important -it allows any water getting through the cladding to run down and out.

I built a large shed this way -I used tyvek housewrap for the outside.
It is perfectly dry inside, justs gets a little bit of condensation on the glass and on metal of say garden tools -but very little and only on frosty days which are then sunny.

if its going to be unheated, insulation will only slow the temperature variation and would probably eliminate and condensation issue at all.

Jupiter01 · 3 Feb 2020

Notch7 said:
then fit 50 x 25 treated battens vertically

what distance apart do you recommend these to be fit?

and...

Notch7 said:
then fit your cladding

What cladding did you use please?

JohnD · 3 Feb 2020

There will be a tiny but consistent amount of heat from the freezer, so if you draughproof and insulate the shed, it will be fractionally warmer than outside, which will reduce damp and condensation risk. A vented drier will blow the steam outside (condensers always add some water vapour to the room)

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Shed interior

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