This is for a DIY kitchen project. The floor has overlay UFH with self levelling compound (TileMaster Level+ Depth) as the top layer and planning to lay Karndean Van Gogh glue down LVT. Seeking some advise on on a couple of things: Is Karndean Universal the best adhesive for the application? Have read and am concerned about the recommended maximum floor temperature of 27 degrees. Is there an alternative adhesive that can withstand a higher temperature? Does the self levelling compound need a primer coat prior to applying the LVT adhesive? Would appreciate any advice or suggestion. Thanks.
If it’s a dusty yes prime the screed for adheisve. We go 5-1 of ardex p51 that’s a decent adhesive or use ardex 1K if you want better.
All lvt or most only withstands a maximum temperature of 27°. There’s no reason it should be reaching that temperature with or without UFH. Make sure you have decent blinds up also.
You don’t want it running at 27 it will be cooking the floor, 21-22 is enough and keep it constant, don’t wack it up and down all the time
Thanks for all the replies. Much appreciated. Based on the advise/tips, Will prime the floor with Ardex-P51 and Karndean Universal adhesive as it is a small kitchen with light usage. Will keep the UFH water temp to a minimum the mixer valve will allow.
Using Karndean Universal adhesive with a primer coat of Ardex P51 on the self-leveling compound sounds like a sensible approach for your DIY kitchen project. Especially in cases of dust or residue, priming the surface guarantees appropriate adherence. Maintaining the underfloor heating (UFH) water temperature at or below 27°C is absolutely vital given high temperatures can compromise the LVT and glue. Maintaining the floor and guaranteeing lifespan depend on a continuous, lower temperature between 21 and 22°C.
Why call it self levelling like a builder does ? Smoothing compound is what people in the flooring trade call it.