Thread: question about cladding insulation

Originally Posted by Marke

I am in the process of planning for a shed and was intending to clad in it first in ply
then screw the colour bond cladding over the ply. Are there any drawbacks to this or
any thing else I should be adding between the colourbond / ply or the ply / frame ?
Thanks..

Mark

You would be better off using the ply on the inside and putting some insulation in between the ply and the colorbond. Even rockwool is better than nothing. If you put the plywood direct onto the colorbond the plywood would heat up and reradiate it into the shed.

Thanks I had thought about that but wasnt sure how much heat the ply would radiate.
What about between the sheeting and ply - notice I am trying to avoid doing the inside
of the walls

Originally Posted by Marke

Thanks I had thought about that but wasnt sure how much heat the ply would radiate.
What about between the sheeting and ply - notice I am trying to avoid doing the inside
of the walls

Try it out, get a sheet of colorbond and put it directly on top of a sheet of ply and do the same with a 50 mm air gap and a 50 mm insulation gap. It will be fairly obvious.

Why avoid doing the inside walls?

I was trying to avoid it due to it being a bit more troublesome and that the roof will be on rollers - it rolls back - and easier to weather seal it on the outside than just colourbond alone . I may need to rethink it tho by the sounds of it.
Mark

Originally Posted by Marke

I am in the process of planning for a shed and was intending to clad in it first in ply
then screw the colour bond cladding over the ply. Are there any drawbacks to this or
any thing else I should be adding between the colourbond / ply or the ply / frame ?
Thanks..

Mark

I agree with Bob on this one. Seems to me that the ply would be a total waste of ply, when for less than the cost of the ply, (although interior cladding would still be needed) good quality insulation can be bought and self installed. Keeps he heat down in summer and the coild out in winter.

When I did my shed, I used the lowest profile top hat section (battens ?) I could find (about 20mm from memory) and cut and screwed these to the frame of the shed. I then lined the walls with batts from the hardware (whatever was on sale at the time) and screwed plywood to the battens.

I kept an eye on the second hand builders yards and got the ply very cheaply (auctions are another source of cheap plywood). The advantages so far are that the shed is cool in summer (some times cooler than the outside temperature when I open it after getting home from work), warm in winter, the shed is fairly well noise insulated and running cables and conduits in the shed was very easy (I'm an electrician.)

Insulating the shed for noise was not the primary aim, but there seems to be a noticeable difference compared to pre-insulation days.

Good luck with the shed. The rolling roof sounds interesting, but wouldn't that defeat the insulation in the walls ?

Regards

The insulation is just to keep the inside temps reasonable during the day when its not being used - This will actually be an used as an observatory 3mx3m hence the ror so at nite the insulation is pretty irrelevant . More important is that it can remain dry or not hold in dampness after the roof is replaced . The idea of the ply was to help reduce any moisture from rain getting in and help seal the ends when closed . Couldnt I put air-cell between frame and ply ? . I am happy to rethink the inside lining as long as the outside can be done up tight.

Originally Posted by Marke

The insulation is just to keep the inside temps reasonable during the day when its not being used - This will actually be an used as an observatory 3mx3m hence the ror so at nite the insulation is pretty irrelevant . More important is that it can remain dry or not hold in dampness after the roof is replaced . The idea of the ply was to help reduce any moisture from rain getting in and help seal the ends when closed . Couldnt I put air-cell between frame and ply ? . I am happy to rethink the inside lining as long as the outside can be done up tight.

Air cell works MUCH better if it is has a gap between it and colorbond which is the recommended way of installation.

Thanks for the feedback , looks like I will go with straight clourbond , wrap the frame in insulshed and then clad the inside walls . Is it easy to do the inside cladding before putting the wall panels up or after the fame and external cladding is done.

Originally Posted by Marke

Thanks for the feedback , looks like I will go with straight clourbond , wrap the frame in insulshed and then clad the inside walls . Is it easy to do the inside cladding before putting the wall panels up or after the fame and external cladding is done.

If you looks at the installation drawings Insulshed looks like it is designed to be put onto the fram before the colorbond. But either way it need a gap between it and the colorbond.

I realise that Bob thanks , I will just hang it loosely then screw the cladding over it .
Have to do the inside now as I cant have reflective surface visible .

Originally Posted by Marke

Have to do the inside now as I cant have reflective surface visible .

Good point (I work with Astronomers).