floating floor and celotex

jaj · 1 Jun 2007

Hi, i wonder if anyone can assist with a little advice. I'm about to float an oak floor in my newly built room measuring 6mtrs by 4mtrs, boards are approx 180mm wide 20mm thick. I hope to lay straight onto 100mm Celotex that has been overlaid with a DPM. The question is does that sound ok or does anyone think I need an underlayment of some sort? and any other advice about expansion shrinking etc.

Any advice greatly appreciated.
Cheers
Jon

noseall · 1 Jun 2007

rigid inso' boards such as cellotex and kingspan can have flooring grade material, 18mm or thicker, laid straight on top.

mattysupra · 1 Jun 2007

Cant see a problem.

jaj · 1 Jun 2007

Thanks guys for your speedy help; gonna start it htis weekend so hope all goes well

Barry123 · 6 Feb 2010

How did it go?

Were you laying tongue and grooved planks or clip together (laminate style) one metre sections ?

I'm wondering about a wood laminate floor, maybe direct onto Celotex.

Barry

Spiceworld · 12 Feb 2010

I would love to know if this went Ok to.

I have a concrete floor that needs to come up by about 85-90mm and a plasterer mentioned that i could do the floor this way as i was thinking on laying 20mm oak flooring.

If anyone has advise i would appreciate it.

Cheers

twillmo · 21 Jan 2021

Barry123 said:
How did it go?

Were you laying tongue and grooved planks or clip together (laminate style) one metre sections ?

I'm wondering about a wood laminate floor, maybe direct onto Celotex.

Barry

Spiceworld said:
I would love to know if this went Ok to.

I have a concrete floor that needs to come up by about 85-90mm and a plasterer mentioned that i could do the floor this way as i was thinking on laying 20mm oak flooring.

If anyone has advise i would appreciate it.

Cheers

Did either of you mange to find a solution to this for give it a go?

catlad · 22 Jan 2021

I would advise you to use ply under your flooring even if its only 6mm thick because if your boards or laminate starts rocking slightly over time it will cause issues if its laid straight on celotex.

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floating floor and celotex

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