Cavity or solid wall for workshop?

[cwr]

So, the plan is to build a single skin block outbuilding that will be used as a store as the house is built. Later on it will have an external render (white sand, cement and lime) and I'll dry line the inside with about 50mm of PIR and it'll become a workshop.

Just wondering about whether it is worth the extra expense and effort of a cavity wall for a better job? I'd still apply internal insulation, so perhaps not?

Thanks
Chris

[Declan52]

Build it in soapbar blocks so it's 150mm wide. Will be more sturdy that a 100mm wall.

 

[Russell griffiths]

Depends how comfortable you want your workshop. 

Mine is built to the same spec as the house. 

Insulated floor, walls, roof. 

[cwr]

I hadn't thought of using 150mm soapblocks, was to now only considering 100mm with piers as per building regs guidelines. I'll look into that option.

 

I want it to be reasonably comfortable. There'll be insulated floor from the start, as well as roof. My thought process behind internal insulation is that I will likely spend short periods there potentially infrequently, so wanted it to warm up relatively quickly (so without having to warm up a block wall), and would not keep it constantly warm.