STAB
New Member
I was wondering if anyone has experience with with both Karndean K-99 pressure sensitive versus Karndean dry set adhesive. I had about 2000 square feet of Kardean Vangogh LVP flooring installed. The entire floor was installed on a new layer of sure ply with Karndean pressure sensitive adhesive. The LVP planks were properly acclimated to the house prior to installation. After about 1 year 1/4” gaps started to form between the ends of the planks. Karndean agreed to warranty the entire floor. I did not want to tear up all 2000 square feet so I only had them replace about 400 square feet. The installation company choose to use another manufacture pressure sensitive adhesive which was supposed to guarantee “no shrink”. I week after this installations the LVP began to pop up at the seams. The installer attributed this failure to not using the correct notch trowel and so they ripped up all of the replaced planks and repeated the installation with a deeper notch trowel. Again approximately 2 weeks after installation several of the planks began to buckle/pop up at the seams. When I spoke to a Kardean installer technician he claimed that the pressure sensitive adhesive has no shear strength and that our installer should have used Kardean dry set adhesive. So my question to any knowledge about these adhesives is Karndean Dry set adhesive a better option to eliminate tile buckling issues?
