Ditra On Water Pipe Underfloor Heating

[Spare Tool]

That's what i was told by Dural.

Oh..I'm starting a floor weds, rapid drying screed over wet ufh, screed only went down Fri, was advised to use TM Ultimate S2 to stick dural down...??
Sorry for thread hijack Kyle

 

[hmtiling]

Oh..I'm starting a floor weds, rapid drying screed over wet ufh, screed only went down Fri, was advised to use TM Ultimate S2 to stick dural down...??
Sorry for thread hijack Kyle

I'd speak to dural and tm and get them to thrash that one out buddy

 

[Kyle Knowles]

No problem mate thanks for the help I've sent a email to schluter to just get there word on it also better to be safe than sorry

 

[J Sid]

use a adhesive suitable for the substrate

 

[LM]

The 70 meter area consists of 40 meter kitchen 20 meter utility room and 10 meter downstairs shower room do u still think I need a expansion joint ?

Kyle just be carefull, the size of the bay's regarding expansion are an approximate guide on standard screeds, your job is pushing it to the extremes, under floor heating with ply on top is stretching it. Considerations have to be made regarding the shape of the bay's ie: 8x5 or 2x20, these factors would make a massive difference as to where expansion joints should be placed, also factors like the colour and composition of the tile in relation to how exposed they will be to sunlight on a substrate like that should not be ignored as these factors will determine the extremities the tile will face. I'm just trying to make you aware of the things that will more than likely cause a failure on a floor like this unless properly planned for.

 

[SJPurdy]

use a adhesive suitable for the substrate

And for the tile!

The tiles here are 600 x 600mm porcelain so the adhesive must be able to bond to 600 x 600mm porcelain; as well as the substrate. A no flex adhesive will not bond sufficiently to porcelain and many of the slightly modified adhesives are only recommended for smaller size porcelain tiles.

 

[J Sid]

you us an adhesive suitable for ditra to substrate and can be a different one for tiles to ditra

 

[SJPurdy]

you us an adhesive suitable for ditra to substrate and can be a different one for tiles to ditra

Sorry i'd skipped over a few posts and thought thread was still about addy on top of Ditra
Yes to stick Ditra to its substrate use adhesive suitable for the substrate. I always overspec. on the sticky side so I have confidence in the bond to the fleece on the underside of the Ditra.

 

[Kyle Knowles]

I'm using weber spf rapid to stick the mat to the floor then weber spf slow to fix the tile

 

[Spare Tool]

That's what i was told by Dural.

H I rang TM and Homelux(that make Dural) today..
TM said ultimate S2 perfect for sticking Dural to newscreed.
Homelux said..."erm what's an S2"
I'm going with TM advice mate