6" too deep?

[r896neo]

has anyone ever used 6" (or more i suppose) of polystyerene sheets under a concrete floor? It for a garage with 5" ot concrete and no screed? I have not used more than 4" before so can anybody reassure me it will be fine? or if not what problems do you see?

Cheers

 

[noseall]

Current building reg's are asking for 5" of jablite or polystyrene anyhow.

One more inch ain't gonna hurt.

..."for a garage"?

Why do you want to insulate a garage floor?

Do you intend parking a car in it?

 

[kevindgas]

Why do you want to insulate a garage floor?

Do you intend parking a car in it?

must be an attached one if you need to insulate?

 

[noseall]

A garage is considered as cold space and can not be otherwise unless something is done with the garage door.

 

[karlosmaximos]

i think buidling inspectors must have diferent views all over the country and work to what they feel like
i poured a new conc floor for an extension a few weeks ago and they only insisted on 100mm with 25mm perimeter,same for another one this week
seems strange they want in a grage though.