Browse Forums Bathrooms and Laundry Re: What is this under shower tile adhesive? 11Apr 30, 2017 11:05 pm Hi all it's been a while but I thought I had better report back on how I went and show some pics as it might help someone else in the same situation and I have to give a big thankyou to James Mason who helped me with along the way. The first pic shows the tiles and old screed have been removed and the damaged Villaboard. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ The next pic shows where the damaged Villaboard has been replaced and sealed with marine Sikaflex. The Villaboard has been flashed down over some plastic angle I bought from Bunnings from memory it was 75x50mm. Fortunately the floor around the drain was much lower than the rest of the floor so I was able to cut the drain pipe low enough to fit a puddle flange then I primed the lower surface with Dunlop primer and filled it with a cement and sand screed. I also leveled a couple of spots near the edges and fortunately the floor falls to the drain. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ In the next pic I have given all surfaces two coats of primer and then two coats of membrane with membrane cloth on all joins and corners. I found that buying a “Shower waterproofing kit” was cheaper than buying the products separately. In the kit you get membrane, primer, membrane cloth, a tube of silicone, and an instruction sheet. The products I used were Dunlop from Bunnings but I believe Ardit also make them as probably do other brands so shop around. I found that the joins in the Villaboard that I sealed with marine grade Sikaflex and smoothed with my finger. In some places where the groove was deep the membrane cloth didn’t go into and I later, when it was dry, had to carefully cut it out with a razorblade utility knife refill the grooves with Sikaflex and then cover with membrane and membrane cloth. I found the membrane cloth was stiffer than fibreglass cloth so a smooth surface is important. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ In the next pic I have followed the instructions on Bunnings YouTube instruction clip https://www.youtube.com/watch?v=QhLOhTlJ_Ro and put down the screed and as in the clip the next day filled in where the wood wedges were. My screed was much deeper than the one in the Bunnings clip. As you can see in the next pic I got a PVC coupling with a piece of wood dowel in as a handle for removal. This was cut to the depth of the screed at the drain and the diameter was similar to the diameter of the black pipe on the shiny grate and so that the screed hole was a little larger than the black pipe on the grate I got a piece of thin 75mm PVC down pipe and cut a split in it so that it went over the coupling and I filled the split with some duct tape. My idea of this was to have a little gap between the screed and the black pipe on the bottom of the chrome grate so that if any water seeps out of the screed it can find it’s way into the drain. I also put a very thin smear of Vaseline on the outside of the piece of down pipe and the between the piece of down pipe and the coupling. When the screed was dry because of the Vaseline I was able to grab the coupling by the dowel and it slipped out of the down pipe and with the split in the piece of down pipe I was able to collapse it in and remove it. I did find it a little difficult laying the tiles with the different levels that the the wooden wedges left because I wasn't prepared to diagonally cut my 200x200mm tiles but I managed but if I had big tiles then diagonal cutting would be the way to go. If I ever did it again with small tiles I might lay the screed as I have seen some on YouTube in one hit and not use wood wedges. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ The next pic shows the finished job. I hope this might help someone doing the same job and thanks again to James Mason for your help as this is the first time I have done this. Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ To err is human but to really mess things up, you need a computer. Hi everyone, Could you help me with some advice? I’m renovating my home and have removed the old tiles from my living and hallway areas (around 80 square meters).… 0 109 Hiya, I’ve just had a reno done in my bathroom and the hot water pipe is visible through the tile where moisture evaporates - see the pic as I don’t know how to… 0 8012 Yeah my reasoning is just that those house posts are designed for vertical load not lateral. I just didnt want to risk interfering with the existing house… 4 19948 |