GreenSkin Shear test over 1/2" rigid foam
Head to head against Ardex 8+9 over rigid foam. Notice the thin-set around the tile, again not curing as fast as the Ardex. Could moisture be "Wicking" to this location????
Green Skin Shear testing over Drywall
More shear testing prep.
These photo's do not prove to me that the design is non-wicking. Who said non-wicking is a feature anyway? JW
GreenSkin over tile vs 8+9
Some head to head battling over tile. I installed some GreenSkin and Ardex 8+9 over tile to see which fares better in a shear test. In the back you can see the same match up over concrete board.
The uncoupling membrane show down
Top Row: Kerdi Ds, GreenSkin WallSeal over drywall
Bottom row: Noble Deck, Strata MAt, Ditra, Spider Web2, Noble Seal TS, GreenSkin and SPider Web1
All my samples and off cuts going head to head. This is a first for me and I'm very excited to see who comes out the victor in this show down.
GreenSkin Shear Testing - First Round a Fail
My daughter decided to help me prepare some extra test boards last week and wanted to make her own. She loves helping me around the house and loves playing with thin-set. Her first test board was constructed with a little bit of GreenSkin, StrataMat and WallSeal. Now these tests can not be added to my Shear testing data because she lacks the ability and the experience on the tools but her test board did bring a scary observation to light.
I helped her with these boards and gave her advice and even placed the GreenSkin on the drywall for her. She was the one who pressed the GreenSkin down hard with a rigid taping blade and spot set a slate tile with some Laticrete 254. Her StrataMat sample was horrible and she thought it was fine and the WallSeal sample looked pretty good.
We tested it yesterday and while trying to test the StrataMat her tile came off before any weight could be added. The coverage she had did not even cover 20% of the tiny tile and she did not first prefill the waffles of the StrataMat. When we added the rig to the GreenSkin the GreenSkin started to sag after 14lbs and failed 41.28. When I looked at the drywall none of the paper faced was damaged. My concern here is that it must be so important to get a full coverage and press hard the GreenSkin into the drywall for a proper bond. The Wall Seal sample pulled off at 32.46 lbs and had upon inspection far to much thin-set underneath.
The warning of the day is certainly the quality and force of the installation of these products. My daughter is seven and certainly not strong enough to install these products. I however am and did a much better job with my samples. I'm curious to see how my samples fair under weight and if the GreenSkin starts pulling away at such low forces.
GreenSkin and bond-breakers - effects on Shear Testing
Jim the drywall was cleaned and dry. I found that any moisture really made the GreenSkin not stick at all.
Originally Posted by jadnashua
There where no bond breakers when we added the GreenSkin and no moist drywall - just clean drywall. This is not my first rodeo and ruling out bond breakers is something I have been very careful of. I also in all my tests back buttered the tile to ensure proper coverage. The sagging of the GreenSkin at such low weight scares me.
I have a number of Green Skin samples to test at home. I will get a good read on this new products ability very soon. Most likely Monday I'll have a much broader data scope to view and ponder.
Once I know how these products fair with no water exposure I will reset a few test to see how they fair with water exposure. I think it's crazy so many men online over on John's forum are promoting a product they know very little about. Guys using GreenSkin like it is approved by ANSI 118.10 standards. 50 PSI for indoor use. Bare minimum standard.
Does GreenSkin have what it takes to meet it? Maybe - maybe not.... The proof is in the pudding.
I wonder how I can test for sagging? Maybe a tension line made out of fishing line or something??? JW
GreenSkin Shear Testing - 2"x2" set over GreenSkin over Drywall Failed - 42.59 lbs
Placed another GreenSkin sample on the wall today to test for shear strength.
The GreenSkin was attached to plain 1/2" drywall and a 2"x2" Porcelain Tile set over top with Laticrete 254. The GreenSkin let go of the drywall cleanly behind the tile and fully failed at 42.59 lbs PSI. Another test sample on the same piece of drywall was set without GreenSkin and the test needed to be stopped because I ran out of room to add water. This second test was aborted at 63.40 lbs PSI
Waterproofing products need to meet a 50 psi shear requirement for interior uses - this test for GreenSkin nets a Fail.
I have many more samples and will re-test this scenerio and others to see if I can manage to get GreenSkin over this 50 psi requirement.
Hanging here with 60 liters of water aprox
The GreenSkin let go and the CClamp feel off the tile. In the end the tile was still attached to the GreenSkin.
Left and right of the test sample the GreenSkin pulled the paper off. I wonder what to make of that? Perhaps once the shearing happens the adhesive on the GreenSkin lets go but with a sharp pull it can take the paper with it???
Some slight separation here on top.
Same drywall - same thin set but excluding the GreenSkin. Well over the ANSI 118.10 requirement of 50 psi.
I would say after this test perhaps the reason GreenSkin does not have an ANSI 118.10 approved is not because they did not want to spend the money but rather because the product does not meet the standard. Lets see how it does over concrete board, tile and foam. We can see if we get any different data.
Update July 22 2013 Evening
Repeat the Green Skin Shear test again tonight with another sample and once again at 75 liters of water the test failed. With the rig this makes 170.375 lbs over four square inches. That makes two exact same results with GreenSkin over drywall at 42.59 lbs psi
This time the greenskin failed both on the top and let go from the drywall on the back side. The Laticrete 254 for still adhered to the fleece on the face of the GreenSkin.
When I went out tonight the test I left hanging (254 and drywall) the drywall failed with a massive blow out. The test hung there all day from 8:00AM till 5:00 PM. I'm not sure what happened and my daughter might have kick a soccer ball off of the garbage can. I did see the test still hanging at 9:00 AM, 10:30 AM, 11:30AM, 4:00 PM and 6:15 PM.