Shed insulation

I bought my shed supplied in sections and it came with a wooden floor. I covered the floor with polystyrene backed, tongue-and-grooved, chipboard flooring panels.

I covered the walls with polystyrene sheets (over the vertical timbers, leaving an air-gap to the cladding), covered over with hardboard. I wish I'd used ply though, but money was tight at the time.

I now want more insulation and better protection from the elements (the shed's been up for about 15 years) and am thinking of cladding the whole thing with insulation backed metal cladding - I have already clad the roof after patching the felt a few times.

First shed I built (well posh shed / entry level workshop) I insulated with 2" EPS sheets in the roof and walls. I did not do the floor - but it was a suspended timber one in a somewhat protected location. That was

If I were doing it now I would probably use 2" PIR foil faced foam boards, and also use them on the floor and just board straight over them. If you get them from a discount / seconds supplier, they are not much more that EPS, and give you better insualation as well as a vapour seal.

I converted the back end of my 40m2 garage into an office room. The garage is a timber framed structure sitting on a brick plinth. Like you the floor is concrete I covered the floor with Visqueen as a vapour barrier although the concrete is already sitting on a vapour barrier and there has been no evidence of moisture coming through the concrete. On top of that I laid

As for the walls including the dividing wall again 75mm PIR pushed in between the studs and roof trusses. PIR gun foam to fill any gaps and to complete the vapour barrier all the joins and studs were covered with foil tape before attaching PB.

I completed the office last summer just before the few hot days we had and despite having a south facing DG window the office remained remarkably cool despite the rest of the garage becoming a bake house as normal whenever it gets hot. Over the winter I used a small 2.5Kw heater fan to warm the place up and after 20 mins of heating I found myself turning it off as it got too hot. So far no evidence of condensation but the trickle vents are permanently open. One bit of advice is to get a window blind (Venetian or roller) as although I sit at a desk that faces the window so do not get any direct sun on the computer screen I do suffer some issues with reflections.

I have a well insulated home office. The heat of me and my computer are enough to keep it comfortably warm on the coldest of (Cambs) days.

I was working in there all through lockdown, and it was nice and comfortable.

Except on Monday morning when it was ****ing freezing.

You might want to think about a low powered heater with a frost stat. If we ever get a winter again it can freeze inside any unheate4d building.

Andy