Norcross have only just got on board. You would, I am sure, be fine to stick ditra down with their addy but as it is gypsum you probably woud not need it.
Remember that you can stick to these adhesives with cement. The issue is compatibility which forcesarequirement fr a primer. It is here that starts to trip up. The adhesive does not stick to the screed it sticks to the primer. If the primer to screed bond is weak for any reason the bond will fail taking the tiles with it. If the primer is not applied thick enough you can get chemical reactions which cause delamination.
To be fair BAL do have a system that works provided their rules are followed to the letter. So do many other manufacturers.
Problem is that the rules don't fit with the industry requirements and practices. There is a fundamental issues in that the majority of cement/primer systems are not robust and will not tolerate abuse, even of the smallest kind.
Now I know that all tilers are perfect tradesmen and do everything by the book and properly........ But do they really. This is not a dig at the tiling trade. It is a simple statement of fact. Things happen on site which cause us all to take risks...... Yes I know I am going to get the "I always do it right" brigade going now.......
If we all did everything perfectly then there would not be failures. If we do everything by the book and there are still issues then the book use be wrong.
Simple fact is that whilst thy are more expensive at present gypsum adhesives are far more robust on gypsum bust rates than their cement/primer counterparts. They remove several risks altogether.
I await the righteous onslaught .....
Remember that you can stick to these adhesives with cement. The issue is compatibility which forcesarequirement fr a primer. It is here that starts to trip up. The adhesive does not stick to the screed it sticks to the primer. If the primer to screed bond is weak for any reason the bond will fail taking the tiles with it. If the primer is not applied thick enough you can get chemical reactions which cause delamination.
To be fair BAL do have a system that works provided their rules are followed to the letter. So do many other manufacturers.
Problem is that the rules don't fit with the industry requirements and practices. There is a fundamental issues in that the majority of cement/primer systems are not robust and will not tolerate abuse, even of the smallest kind.
Now I know that all tilers are perfect tradesmen and do everything by the book and properly........ But do they really. This is not a dig at the tiling trade. It is a simple statement of fact. Things happen on site which cause us all to take risks...... Yes I know I am going to get the "I always do it right" brigade going now.......
If we all did everything perfectly then there would not be failures. If we do everything by the book and there are still issues then the book use be wrong.
Simple fact is that whilst thy are more expensive at present gypsum adhesives are far more robust on gypsum bust rates than their cement/primer counterparts. They remove several risks altogether.
I await the righteous onslaught .....
