Floating Floors light at the end of the tunnel - TilersForums.com

[baht'at]

This may not be a solution if the floor is already laid due to the height increase but could be useful information to know if your involved prior to completion of the floor.
"No More Ply "are producing a 22mm 2400 x 500 tongue and groove board now which they say would need Solid Bed adhesive to the foam plus the tongue and groove glued,which would provide a suitable ridged base for tiling on
For those going to install UFH matting there would be no need to over board the chipboard,so could save time and possibly money.
Unfortunately having spent some time searching the Net there is very little information out there yet but on the site of STS-Uk.Com in Leeds there is a little info or they are willing to talk about the product on 01132022010.
Fermacell products were mention yesterday but I think this would be a lot stronger and more ridged.

 

[One Day]

Solid bed adhesive to the foam! That's the key to it working. Not because it's a brilliant magical product. Think about it...!

 

[J Sid]

surely this is still a floating floor, the foam/insulation board is not stuck to the substrate

 

[Chalker]

Screed, is in essence a floating floor. Only the weight and low expansion keep it there. Chipboard has low weight and high expansion. Add to that its only glued together by a small ammount, it's a recipe for disaster.
The 25mm thick gypsum boards like Knauf and fermacell, act like a 25mm thick screed and having a 50mm wide joint for the boards to be glued and screwed together. This is used a lot in Germany and they tend to know how to make a decent product.

 

[baht'at]

Screed, is in essence a floating floor. Only the weight and low expansion keep it there. Chipboard has low weight and high expansion. Add to that its only glued together by a small ammount, it's a recipe for disaster.
The 25mm thick gypsum boards like Knauf and fermacell, act like a 25mm thick screed and having a 50mm wide joint for the boards to be glued and screwed together. This is used a lot in Germany and they tend to know how to make a decent product.

 

[baht'at]

The reason for mentioning the No More Ply boards was as this is a Cement based product my interpretation was that this would be heavier and have a better structural integrity over a Gypsom based product,as mentioned by Chalker.

 

[J Sid]

I think the question then should be, "when is a float floor safe to tile?" , If a concrete floor on kingspan is viewed as a floater!

 

[Dumbo]

The thing is as I see it 75 mm sand cement screed approx 127 kg PSQM is enough to weigh down the Kingspan to follow contours of substrate and take all the bounce out of it. Not sure screed panels would have enough weight to do this . German you say maybe their subfloors are better than ours .

 

[One Day]

Uk floating floors should be renamed 'lazy' floors. They're never built correctly. Just thrown in.