Insulating garage breeze block wall

Mark M

Mark M

Mark M

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Joined
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Newcastle upon Tyne
I have a large utility room at the back of the garage that Id like to make more use of but it gets quite cold as one of the walls is a single skin breeze block wall that divides it from the garage with a heavy wooden door into the garage. The other 2 walls are exterior brick and block and the forth wall is a stud wall into the kitchen.

Can I achieve a good result for somewhere in the region of say £500 or am I way off? Happy to do most of the work myself where possible.

I had thought about building a timber frame and then filling this with rockwool or similar but I dont know what type or depth insulation I'd need? Ideally Id like to lose as little as possible from the garage side but appreciate its a trade off between insulating factor and space

I've got things hung up on the wall on the garage side so I'll need to put them back up once everything is completed.

Edit - just seen that you can get insulated plasterboards. Are they any good?
 
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Solid foam insulation glued directly to the block wall will do you - a 2"/50mm thickness is probably a good compromise between insulation value and cost. That said with a timber frame it may well be cheaper to just use rockwool instead.
 
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Thanks for the replies, I'll go with the timber frame option!

Couple of other quick queries:

What size timber do I need to use if I go with the 50mm insulation?

How far apart do I place the timber?

Whats the best way to fix this to the blocks? Do I need plugs or can I just drill straight into the block?

Can electrical cables be ran in the void? There are a couple of sockets on that wall already. Do I need a sparky or can I do this myseld?
 
what about aerogel insulation?

timber frame, thin aerogel then insulation boards over the top then plasterboard. aerogel is supposedly the bee's knees for insulation properties
 
Psycho Sonny said:
what about aerogel insulation?

timber frame, thin aerogel then insulation boards over the top then plasterboard. aerogel is supposedly the bee's knees for insulation properties
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I came across some when I was looking for Celotex a while back, the place was selling it for something like 20x the price of celotex!
 
Just debaiting about this my self.

My garage has become my workshop. It's bloody cold in there now. The building is completely stand alone bar 1 wall is nextdoors garage also.

From a quick google about using kingsman, celotex or alike is the way to go.

I was thinking of batons vertically just off the floor (maybe 18mm off the deck) to the rafters going across. Via google it was advised to use a damp proff layer between wall and baton. Keeping it simple to fix them in place concreat screws.

Spaced 600mm apart as it's only a garage and keeps costs down but is still keeping some regs.

Then insert between the timber the insulation. No plans to run any cables or anything behind wall.

To go over the top is 18mm OSB. Screwed into the timber batons every 300mm so nice and solid.

So that's the walls. Just unsure what to do about ceiling and garage door.


Here is where I got some info

http://blog.kingspaninsulation.co.uk/insulate-garage-conversion-part-2-wall-insulation/
 
This might help with my downstairs being so cold.

Of the house you perverts.

Don't need any kind of planning eh?
 
Maccapacca said:
Insulation won't make an unheated room warmer. I'd assume you're going to add some kind of heating
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Not sure if this is aimed at me or Lisapete but if its me then I wont be heating the garage, its to try to prevent the cold from the garage cooling down the utility room. The utility is heated with a large radiator but loses heat so fast.
 
Celotex and the like are all well and good, but what they dont tell you is its only rated for i think around 10 years max, its performance slowly drops to the same level as polystyrene, which is vastly cheaper. In a garage i would be tempted to just use that with some plasterboard over the top.
 
Mark M said:
Not sure if this is aimed at me or Lisapete but if its me then I wont be heating the garage, its to try to prevent the cold from the garage cooling down the utility room. The utility is heated with a large radiator but loses heat so fast.
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I agree what you doing as is better than doing nowt.
 
robj20 said:
Celotex and the like are all well and good, but what they dont tell you is its only rated for i think around 10 years max, its performance slowly drops to the same level as polystyrene, which is vastly cheaper. In a garage i would be tempted to just use that with some plasterboard over the top.
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Any source? My whole house is insulated with Celotex so if thats true it'd be pretty bad.
 
There are a few threads around on various forums argueing about if it exists and to what degree.

It sounds like there is some level of deterioration over a substantial period of time, but that it's taken into account when they work out the thermal conductivity values.
 
Siliconslave said:
There are a few threads around on various forums argueing about if it exists and to what degree.

It sounds like there is some level of deterioration over a substantial period of time, but that it's taken into account when they work out the thermal conductivity values.
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This is what i have found as well, its still better than polystyrene, but arguable not worth the extra for a garage. For the house definitely, i'm going to be using 140mm in the loft.
 
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