Insulation for a domestic garage (man cave)

[Jev88]

If I can sort out my mortgage I should own an old house with separate garage at some point in the new year (ex wifey not agreeing to my generous offer of what I want as my share of the house we jointly own).
Suggestions for simple/cheap insulation of the brick garage walls and is it worth considering the floor before I move loads of assorted bikes and other crap in there?

Thanks.

 

[Silver-Fox]

If you are using it to inhabit for a good few hours in a day and not driving anything heavy in there.
You need to insulate the floor.

Personaly I would use Kingspan for floor and walls.

Not cheap but very good.

 

[Kannon Fodda]

Depends on the standards you want to achieve and how long you expect to be in the man cave. Floor will be more comfortable insulated than bare concrete, but it's the least important for heat loss. Roof then walls is the consideration.

Walls easiest DIY is probably rigid batts of rockwool or similar pushed to a timber stud frame which you can then cover with any form of boarding. If you are using a stud I'd recommend laying the bottom stud plate on a bit of DPC material over the floor and get a bit of DPM type sheet between the stud and brick as well as plastic sheeting between insulation and your boarded finish. Will limit risks of some damp either from brick into the insulation, or condensation as warm air moves into the insulated wall.

Foam based walls - Celotex / Kingspan, available in the likes of Wickes may be a bit more costly, but will be more effective for the overall thickness and you might get away without the stud and thus plastic sheet, with some fixing or even "no nails" to the brick, but still need a way to fix your internal sheet to the wall, so some sort of battening at least.

 

[Jev88]

If you are using it to inhabit for a good few hours in a day and not driving anything heavy in there.
You need to insulate the floor.

Personaly I would use Kingspan for floor and walls.

Not cheap but very good.

A friend of mine is a Kingspan rep!! Never thought about that..... Thanks .

 

[Silver-Fox]

A friend of mine is a Kingspan rep!! Never thought about that..... Thanks .

?

I missed saying the roof it obviously needs doing ?

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[Treeeev]

If you are thinking of using Kingspan or Celotex, it might be worth looking at Seconds and Co as they deal in second grade and damaged sheets. When I built my extension, they were substantially cheaper than other suppliers. The only downside is that you cannot specify a delivery date, they give you a date when they have a lorry load for deliveries near you

Cheers

Trevor