Just a garage (incl motorbike content)

Don’t write-off the cheaper options that do a pretty good job as well.

Although traditional stuff like rockwool is the go-to, you may find some cheaper synthetics are just as useful until you go spendy.

For example my shed has had that Thermawrap bubble-wrap foil stuff for a few years now and it’s actually excellent. Once the heat is in, it’s in. In the summer the space stays cool as well.

If I were doing a garage, I would gladly staplegun some rolls of the Thermawrap and see how it goes. Doesn’t hurt and doesn’t cost the earth, also super quick.

Edit: in the shed I did walls and roof then covered the walls with ply board. For the garage I mean, staple Thermawrap in the roof - you won’t see it anyway.