I have never tiled a sky light well before, nor have I ever read any specifications on how it should be properly done. More red flags get raised than anything else when I tried to figure out the best options for tiling one of these sky light bulk heads or wells. Place the skylight inside the shower and the task gets harder. Make the shower also a steam shower and now there are many factors to consider.
The largest and most weighing factor I think is thermal expansion. You have a window in a steam room and at the very top you have glass. I wanted to seal my tile installation to the glass of the skylight but I wanted some room for movement. I elected to use an expansion strip (Dilex BWA White shown below) designed for this and order a couple different sizes to have options at install time.
One of the issues I had with the skylight was how to vapour proof it. Tying the skylight into the Hydro Ban Sheet Membrane Vapour proofing was not that hard, but at the very top I had only a 1/4" of seeming room. Here are nine photos I unploaded today to my private photo albums. The original files are all full size and around 3-4 MB each. You need the password I email out to open the folder. Anyone who has made a previous donation can view these new pictures and album as well.
Open Pictures in Private Album
I ended up using one piece of expansion strip installed the wrong way to act as a cap (lower left photo shows this) for the skylight's lip and another installed back to back (look and middle photo) with the first as my finished piece. This piece got sealed to the glass and the expansion strips themselves sealed to the vapour proofing.
Here is a look at some of the installation pictures. Remember, when you are looking at these there is no proper way of doing this. No specification from the TCNA or the TTMAC. None. It the big picture no window should be in the shower at all, but - this is not what people like so we are often asked to push the boundaries. I did not contact any of the suppliers of these materials for permission since I know all ready none exist.
|SkyLight Expansion Profile: Dilex BWA White|
The illustration above shows a cross section of a Dilex BWA tile expansion profile edge. The photo of the Dilex BWA the exact product I used. The entire product is made from one type of plastic and another type of rubber. I found cutting these strips super easy and just used my box cutter to do so.
I tried using these same profile for the other window in the steam shower and found that the sharp ninety degree edges made it impossible with my rolled Hydro ban Sheet Membrane. With the window however the install was much simpler.
In this photo you can see a tile mobile. I made this so I could measure the cuts for the ceiling tile. I want the edges perfect. No lips. No tilted sides. I used fishing line and set it when I set the Dilex BWA expansion strips. This work extremely well and I am so pleased with the simple use of basic tools to get such a killer end result.
Today I might start setting a few of the tile pieces for the skylight well. I will get some better pictures of the Dilex BWA strip. Show how I cut it and keep adding to this post as I go.
I got up on the roof the other day when the builder was there adding in grills to keep the roof drain's clear of debris. You can see the Dilex BWA strips in this photo. So the picture is of me looking down into the shower from the roof.