We had vinyl plank flooring installed. Around 3 months later the thinline started lifting from the floor beneath. Floor bulged plus thinline joins started raising, vinyl planks still attached to the thinline but our floor is bubbled and raised in places. It has been looked into and Harrisons told us it is due to subfloor moisture - which they are supposed to test for prior to install but did not. Their expert lifted a plank and tested moisture content and found it was dry and well within the maximum permitted. Harrison are still saying its our problem. Much communication between us but at this stage they will not even confirm what the warranty period is on our floor. Everytime we look at our floor it is a reminder of the miserable dealings we have with Harrisons. WE VERY MUCH REGRET BUYING FROM THIS COMPANY.