Kerdi board

**jadnashua** · 04-18-2012, 04:10 PM

The steam line should be insulated. It should not be in direct contact with the material. This is for two reasons: to keep the line hot possibly making the surface dangerously hot to occupants, and to preserve the material. A steam line run in direct contact with any surface that is tiled could put some really bad stresses on the ceramic or stone tile on the surface - especially in a commercial steam room that may run extended hours. It could get hot enough to burn someone and be a safety hazard as well.

Steam is the vapor created by boiling water. Water boils at 212 at sea level. Steam CAN be significantly hotter. Since it originated from boiling water, which was 212, on the outlet to only be 110, most of it would have condensed, and you won't have much steam...saturated air, certainly, but not steam. So, you could have lots of heated mist at 110, but not steam. The mist is liquid droplets of water, steam is a colorless vapor. The mist forms when the steam hits the cooler air of the steam room. So, how does a steam generator making at least 212-degree steam vapor at the source, ensure it is only 110 at the outlet?

The foam won't melt at 212, but the rest of the structure might have problems. I did find in the spec sheet a maximum of 158-degrees F - missed that the first time through.

No idea how hot the actual steam pipe got, but it wouldn't surprise me if it exceeded that if ran uninsulated against the back. Depending on where the steam generator is located, it's likely to exceed that for at least some of the run, if not all.

**johnfrwhipple** · 04-19-2012, 07:01 AM

Jim how do you check the manufacture date of Kerdi Board? And where it was made?

Over at the John Bridge Tile Forum John Bridge himself writes that in 2008 there where defective boards with problems. How do we know our stock is not the old stock? How do we know that some are still not being made that way?

Could it be in the shipping? Maybe the containers get to hot when they are being transported in ships and trucks from Europe to North America, like a car does in the summer maybe???

Please let us know how to check when the Kerdi Board was made and where?

Thanks.

JW

http://www.johnbridge.com/vbulletin/...3&postcount=47

**Hackney plumbing** · 04-19-2012, 07:46 AM

Everyone that has common sense knows that a paper based products are inferior to a cement product. Mr.Whipple........it is very difficult to defeat "stupid".....I have defeated it in the past but it takes many posts......as your finding out.

**jadnashua** · 04-19-2012, 10:11 AM

Since I've never seen Kerdiboard except in pictures, I don't know if it has a code stamped on it like some food products, or other items for batch control. If it does have a printed number on it, the manufacturer would probably know how to decode it.

**johnfrwhipple** · 04-20-2012, 06:32 AM

Originally Posted by Hackney plumbing

Everyone that has common sense knows that a paper based products are inferior to a cement product....

Thank You. I agree. The internet is full of repetition of full of garbage advice. Most of it poor quality. Hell you have people that have never even installed products or for that matter seen or touched it telling the world how to install it properly. You even have people defending products and install advice that don't even build showers for a living. How can this be a good thing. You might as well go to Home Depot and ask the guy in flooring how to build a shower. I'm sure he got 2 hours training back in January.

Our internet world is merging with corporate america. Advice online is now the next big radio jingle. Careful who's advice you follow and see who they are before jumping into your next renovation.

Me I'm an open book.

My business name is By Any Design Ltd. here in Vancouver. I carry 4 million liability insurance with Willis Louie insurance on Davie street. I pay into WCB or workers compensation board and have a contractors licence in Vancouver, North Vancouver, West Vancouver and the District of North Vancouver. I have been incorporated for almost 12 years. All these facts are easily confirmed.

Who's giving you your advice?

JW

**LLigetfa** · 04-20-2012, 03:11 PM

Originally Posted by Hackney plumbing

...it is very difficult to defeat "stupid"....

One of my favorite quotes:

Strange as it may seem, no amount of learning can cure stupidity, and formal education positively fortifies it.
Stephen Vizinczey

**Cookie** · 04-20-2012, 04:05 PM

The stupidest I have ever seen are women managers, those, in jobs, where an education is not necessary and they thrive on what they seemingly see, as power. They fear losing it for then, they go back to flipping burgers. Might be the same for men managers, but, I know for sure, it is with women. Those with the least amount of education has the most need to prove their self-worth in their job.

This is why I stay in the man's world, women on the whole has not evolved enough for me.

**johnfrwhipple** · 04-21-2012, 06:42 AM

Originally Posted by Cookie

The stupidest I have ever seen are women managers, those, in jobs, where an education is not necessary and they thrive on what they seemingly see, as power. They fear losing it for then, they go back to flipping burgers. Might be the same for men managers, but, I know for sure, it is with women. Those with the least amount of education has the most need to prove their self-worth in their job.

This is why I stay in the man's world, women on the whole has not evolved enough for me.

Them fighting words Cookie. I work with many women here in Vancouver and some of them would slap you upside the head for a quote like that.

I have a new question for Jim. Why is the KerdiBoard Problem thread on JB's site Non-Searchable by Goggle? It seems odd that you can look at their thread titles and search those keywords and the JB thread comes up first page in a google search. But if you search "KerdiBoard Problems" or "Kerdi Board Problems" the thread on John Bridge showing the failing steam shower is nowhere to be found?

Turns out it's just Google switching the KerdiBoard to Kerdi Board. Thanks to Greg for showing me my error.

JW

**Cookie** · 04-21-2012, 12:45 PM

Those are words spoken in truth. I am 58 years old, have worked a lifetime in various positions ( ones needing education & diplomas, and then, others you just got to show up) and given a choice of the sexes to work with or for, I definitely, would pick the males.

Oh, and your comment about they would slap you upside the head? That is my point.

This is basically very true,
"Strange as it may seem, no amount of learning can cure stupidity, and formal education positively fortifies it."
Stephen Vizinczey