I came across this job recently in an upscale development. I don't know the builder or the mason but it is hard to believe that someone is still so ignorant of the proper way to prep for thin veneer stone.
I have seen the results of this type of installation often when I am called to look at a three year old house with leaks and black mold. The tear off and replacement is ugly and expensive, and I hate this kind of work. The only ones happy in the whole mess are the lawyers.
Really, no water resistance? the typar that I researched passed the 1" puddle of water for 1 hour test (barely) and also whatever the water vapour permeability test was (which tyvek also far surpassed)
the first you mention is a water column test,it's not a hold an inch of water in a puddle test but a specific height of a column of water
the other you speak about is also known as the ''boat test'' they make a little boat out of the material and sprinkle in a powder that changes color in the presence of moisture,then they float it in water to see how long it takes for the color to change
because of tyveks higher permeability it can not pass the boat test but does great in the water column test which DuPont claims is a more accurate permeability test
Well you seem to know a lot about it but when I did my research the specific test was that the product needed to hold a puddle of water 1" deep for an hour without passing any water. Tyvek lasted something like 2 hrs and typar lasted an hour 5 mins or something. I remember that very specifically because it seemed like such a real life test. One that actually means something to me. The other was just a result saying that tyvek allowed 1gram of water vapour through each mm2 every 5 minutes (or something I don't remember since it wasn't the same real life type result)
I know that I said ASTm earlier but it was actually a CAN/CSA specification which is usually but not always the same as ASTM standards.
ok i will rephrase. Tyvek is less permeable to liquid and more permeable to vapour (i though it was only in one direction but I'm probably wrong). Typar is more permeable to liquid and less permeable to vapour.
I'm pretty sure I was like 11 or something when I first saw Tyvek in the building trades. You must have been what, 2? It was trademarked the year I was born. In 1979 Devo was wearing it on stage.:laughing:
all kidding aside Lone has his preference and i wouldn't ever question how he does his jobs,cause i know no matter what he put under his siding he knows it's the detailing thats most important:surrender:
i had a designer jacket made out of the stuff,i still have it somewhere i think:laughing:,tell you what that thing was pretty warm for something you could ball up in your hand:thumbup:
you missed putting on foil faced kraft paper? you wanna talk a waste of time
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