Sealing Tile Backer Board Joints ~ Roger’s Tips

Abacus Bathrooms Elements Board
https://www.abacus-bathrooms.co.uk/#!/search?q=elements

Aquaseal Wet Room Waterproof Tanking Membrane
https://amzn.to/3HXsRAz

CT1 Multi-Purpose Sealant & Adhesive
https://amzn.to/4bFq7VS

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Roger is on familiar ground. He loves a bit of Elements Board and knows just what to do with it.

Our message from Michael:

I have installed tile backer boards but am confused about sealing the joints. I was advised to use a tile adhesive between where the boards join and then a tanking kit with tape to seal the joints. Is this correct, or should I be using different products? Any help is greatly appreciated. Best Regards, Mike