Mapei Keraflex for wetroom floor

[frances.inglis]

Following tanking, is Mapei Keraflex a suitable tile adhesive for a wetroom floor?
Thank you in advance for advice.
Frances

 

[al strachan]

i cant comment, but the those in the know will need info on whats underneath, ground floor/second floor, wood/screed, type of tile you are using etc etc.

 

[frances.inglis]

Thank you Al.
Ground floor. Concrete floor with warm water (30 degree) UFH.
Sloped area shaped with screed. Tanking with Aquaseal Wet Room System Kit - Waterproofing membrane for shower and wet room.
Frances
[automerge]1573130361[/automerge]
Floor tile is 450mm square ceramic with water absorption 3% < E <= 6%.

 

[Italy]

normal keraflex is not a s1,
keraflex maxi is a s1, therefore adequate.

 

[frances.inglis]

Thank you Antonio. Why would I need S1 (deformable) please?

 

[Italy]

Thank you Antonio. Why would I need S1 (deformable) please?

heated floor serves an adhesive s1

 

[frances.inglis]

For reference, Here is the reply I subsequently received from Mapei technical.

From: Rowberry Luke [mailto:[email protected]]
Sent: 08 November 2019 11:09
To: frances
Cc: Technical-uk <[email protected]>
Subject: RE: Mapei large format porcelain tiles installation guide

Dear Frances,

Mapei Keraflex can be used on the walls without no issues providing the substrate is solid, dry and contamination free.

We unfortunately do not have any test results to confirm if any Mapei adhesives will work with the Aquaseal tanking system. However given the description the Aquaseal tanking system sound similar to our Mapei Shower Waterproofing Kit but it would be recommended to confirm with Everbuild what classification of adhesive they would suggest to adhere tiles to their system.

On the understanding that Everbuilkd have confirmed a C2TE adhesive is suitable and the underfloor heating system has been commissioned Mapei Keraflex could potentially be used to bond the 450x450mm tiles

We hope that this information is of benefit to you and if you require any further assistance please do not hesitate to contact us.

Kind Regards,

Luke Rowberry | Technical Services Advisor
T. +44 0121 508 6970 | M: 07342 052 058 | D: +44 0121 594 0952
Email [email protected]




Mapei UK Ltd, Mapei House, Steel Park Road, Halesowen B62 8HD
Company registered in England No 2391086
T. +44 0121 508 6970 | F. +44 0121 508 6960 | www.mapei.co.uk | follow us on





From: Horwath Tim
Sent: 07 November 2019 14:14
To: Technical-uk <[email protected]>
Subject: FW: Mapei large format porcelain tiles installation guide

Hi,

Can someone please respond to Frances’ technical query.


Kind regards,

Tim

From: frances
Sent: 07 November 2019 13:19
To: Horwath Tim <[email protected]>
Cc:
Subject: RE: Mapei large format porcelain tiles installation guide

Tim
A quick question.
Is Mapei Keraflex adhesive suitable for wet room with the following substrates?

It is
Ground floor
Concrete floor with warm water (max 30 degrees) UFH
Wet area shaped with screed
Tanking with Aquaseal Wet Room System Kit - Waterproofing membrane for shower and wet room
Tiles 450mm square ceramic water absorption 3% < E < 6%

Walls concrete
Water resistant plasterboard
Wall tiles 450mm x 318mm ceramic


Thank you
Frances

 

[Italy]

so I was always wrong 🙂
I didn't realize that the tile was 45x31
strange measure.
I did it even with normal keraflex
small tiles, but I prefer to go safe with a heated floor.

 

[Tony_C]

Why not just stick with Mapei for the shower proofing kit also for peace of mind of compatibility? can't be much difference in price, an extra £20 or something.

 

[frances.inglis]

Thank you antonio for your replies. I appreciate the helpfulness on this forum.
Tony_C - I understand the compatibility issue - especially with a wet room.