Garage Door "Insulation"

[Hudson1984]

After some advice for my garage.

It's cold. bloody cold! not helped by the fact I could put my hand through the gaps around the up and over door!!

Now, plans are afoot to:
a) in the short term, make a new door that fits the gap.
b) in the long term we're extending so it'll be replaced with a new one anyway.

Plan "a" is still a couple of months off as we've some other building works going on around our house which means the summer house is in the garage - until that's out, the door is staying as it is.

So, colder months are looming and I need a bit of a solution.
Thick Curtain?
Sheet Insulation (pricey)
Rockwall rolled out and stapled to ceiling rafters?

I don't really use the up and over door too often but I do use it every now and then so don't want to do anything that's too much of a pain in the arse to remove when required.

any thoughts?

 

[foxhole]

Insulation retains heat , there is none in a garage .

 

[Hudson1984]

Insulation retains heat , there is none in a garage .

true, ok perhaps not "insulate" maybe "draught exclude" was more apt

 

[scbk]

Post photos. If the gaps are that big you can get your hand through, maybe some strips of wood to narrow the gap would be a good start.