bronzefury
New Member
Hi,
I'm currently doing a 24 hour leak test on my recently installed kerdi shower. I noticed that there is a small bubble forming that appears to be going through a kerdi band patch.
A little more background - while I was attaching the kerdi membrane to the mud bed, I might've created a small hole in the kerdi membrane due to a small, tiny pebble puncturing through the membrane while I was trying to squeeze out the thinset from below the kerdi membrane.
After removing the tiny pebble, I immediately put a square kerdi band to patch it and continued to waterproof the rest of the shower pan. I
Now, I'm doing a 24 hour leak test. Its probably been 4 - 5 hours now since the beginning of the test. I noticed a small bubble forming where I put the patch. The bubble eventually surfaces to the top of the water. It takes about 20-40 minutes to form (hard to tell exactly how long because I have to kneel by the shower pan and look at it for a long time).
I don't think this is normal. This is the only place where a bubble is forming. I don't quite understand why a bubble would form on the kerdi band patch. Shouldn't the kerdi band be completely waterproof?
So far, the level of the water has not gone down. I've been using Bostik Ditra-set as the thinset. I mixed 1 quart of water to 7.6923 lbs of Bostik Ditra-Set so that it would be "fairly fluid but still hold a notch".
In the image below, I drew a thin red arrow pointing to the bubble.
I tried to upload video but file is too large. So, for now, a jpg will have to do.
My questions are:
Raul
I'm currently doing a 24 hour leak test on my recently installed kerdi shower. I noticed that there is a small bubble forming that appears to be going through a kerdi band patch.
A little more background - while I was attaching the kerdi membrane to the mud bed, I might've created a small hole in the kerdi membrane due to a small, tiny pebble puncturing through the membrane while I was trying to squeeze out the thinset from below the kerdi membrane.
After removing the tiny pebble, I immediately put a square kerdi band to patch it and continued to waterproof the rest of the shower pan. I
Now, I'm doing a 24 hour leak test. Its probably been 4 - 5 hours now since the beginning of the test. I noticed a small bubble forming where I put the patch. The bubble eventually surfaces to the top of the water. It takes about 20-40 minutes to form (hard to tell exactly how long because I have to kneel by the shower pan and look at it for a long time).
I don't think this is normal. This is the only place where a bubble is forming. I don't quite understand why a bubble would form on the kerdi band patch. Shouldn't the kerdi band be completely waterproof?
So far, the level of the water has not gone down. I've been using Bostik Ditra-set as the thinset. I mixed 1 quart of water to 7.6923 lbs of Bostik Ditra-Set so that it would be "fairly fluid but still hold a notch".
In the image below, I drew a thin red arrow pointing to the bubble.
I tried to upload video but file is too large. So, for now, a jpg will have to do.
My questions are:
- Has anyone else seen this?
- What is the best way to fix this - a dab of kerdi fix?
- Is this something to worry about?
Raul