Breeze block garage

[Tedglen]

Hello, I have a single sling breeze block garage, rendered on the outside. what would be the best method to insulate the walls. do I need to create and air gap? what boards would I use.

also is there anything I can use to insulate the floor before I put wooden flooring down

I am trying to turn it into a home office.

Thanks in advance

 

[noseall]

Think DPM membrane, battens and insulation 'cell'. My advice would be to run DPM across the floor and allow it to drape up the wall 600mm. Float T&G boards over say 50-100mm of Celotex for the floor and then trap 100mm Celotex and DPM behind 50mm x 25mm battens for the walls.

Or summat like that.

 

[Tedglen]

sorry I am very new to this. for the walls I would use 100mm Celotex. do I need to leave a gap for air to flow. can the be dot and dabbed to the wall? can these be plastered or does plasterboard sit on top of a wooden frame?

 

[noseall]

No ned for air. Foil tape all insulation joints. Plasterboard fixed to studs, taped and skimmed.

 

[Tedglen]

what size patterns do I need for 100mmCelotex. how much do I space patterns out

 

[Tedglen]

any pictures of how this should look ?

 

[noseall]

any pictures of how this should look ?

Foil3

• noseall
• 2 Apr 2019

Foil1

• noseall
• 2 Apr 2019

DPC1

• noseall
• 27 Sep 2018

Garagecon1

• noseall
• 22 May 2016

Bow3

• noseall
• 24 Apr 2016

Bow5

• noseall
• 24 Apr 2016

Bow6

• noseall
• 24 Apr 2016

 

[noseall]

what size patterns do I need for 100mmCelotex. how much do I space patterns out

Do you want me to pop around and build it for you?

600mm max c/c. I prefer 400mm or 450mm centre's.

 

[Tedglen]

lol - sorry, so I batten the walls 600mm apart, 50mm deep using 25by50mm, do I then cover the wood in-between with the foil ?

 

[Deleted member 292770]

Think DPM membrane, battens and insulation 'cell'. My advice would be to run DPM across the floor and allow it to drape up the wall 600mm. Float T&G boards over say 50-100mm of Celotex for the floor and then trap 100mm Celotex and DPM behind 50mm x 25mm battens for the walls.

Or summat like that.

where does the moisture that penetrates the single block go?

 

[noseall]

where does the moisture that penetrates the single block go?

The same place it always went.

 

[Deleted member 292770]

it won’t be the same place though. It’ll be trapped behind his insulation.
with the ‘no air’ that you recommended.
sounds like a recipe for mushrooms and a bad smell to me.

 

[RandomGrinch]

it won’t be the same place though. It’ll be trapped behind his insulation.
with the ‘no air’ that you recommended.
sounds like a recipe for mushrooms and a bad smell to me.

It might be just me, but I don't see a difference between this method and full-fill cavity insulation (not that everyone recommends that!).
Or am I missing something?

...although, would the battens need better protection from water ingress, if attached directly to the single skin?

 

[Tedglen]

what would the other method be ?

 

[Dereekoo]

it won’t be the same place though. It’ll be trapped behind his insulation.
with the ‘no air’ that you recommended.
sounds like a recipe for mushrooms and a bad smell to me.

Its rendered so moisture should not be an issue not unlike the Kingspan K118 spec