The last thing I want is our flooring looking and sounding cheap! We recommend to have your sub-floor completely leveled before installing a new floor. Hi! This is usually recommended regardless and an easy fix at the doorsways. Thanks. The floor is down and it looks beautiful, but I can see the floor indenting/flexing in many spots when anyone walks on them. Our last instance was quite severe (3-4 inches of runoff filled with sediment, but no “sewer” backup – the only drain in our basement is our sump pump, which doesn’t connect to sewer lines). ft of Pergo Gold 3mm that is new never opened that I had planned to use for part of it. We build houses and had been using laminate flooring. There is a linoleum floor there now. I would recommend a COREtec that is rigid core and has attached cork backing that can be glues or floated. Thanks for clarifying, Vinh! We always recommend adding a small expansion gap, regardless of the installation type. If you are a condo or multi-family, sound ratings do matter. My biggest fear here is with the drain. Concrete should be as level as possible, or the floating floor can dip into the low spaces, causing noise or joint damage. The cork attached cork underlayment that comes with the COREtec may not offer sufficient sound suppression to meet the needs of multi-tenant buildings. Hi, I’m installing a 8.5mm LVP that does have an attached pad. Best of luck with your install! How would I prep the floor and do I need any underlayment for it? I had already pre-purchased pre-stick vinyl planks for the new ‘look’, but now Nothing will adhere (even with primer/sealer) to the cardboard coat. Oh no! What is the best underlayment should I use? The contractor wants to glue the click floor down as well. This brand is a click lock vinyl that comes with an attached cork backing that is a moisture barrier and sound insulator. Hi Ken, thanks for your question. *I know using additional underlayment can void the warranty of LVT which I’m ok with cause very very rarely manufactures honor them anyway. After researching the Delta-FL, I would not recommend using this under your vinyl. Laminate flooring is designed for quick and easy installation over almost any flat, smooth floor surface. Hey Danh, thank you for reaching out. I’ve been reading that rubber underflooring is not recommended for vinyl due to potential stain issues? It is normal for underlayment to get lightly dented or scratched in transit, however if it is ripped and the flooring is exposed, that is damage and you may want to consult with the store where you purchased your flooring. Unlike laminate flooring, most vinyl floors are designed to lay directly on top of the subfloor. Hi Tom, how thick is your particle board? So I don’t think I can make a transition-free install from the kitchen to the living room (unless someone knows a good trick for this). It was replaced, and within a week it started warping again, but so far only over the areas where they placed a leveling compound. I can hammer the staples down to be fairly flush, but it will never be totally flush. Interesting if it’s good idea to cover plywood with waxed paper for reason of elimination potential squeaking then install 5mm luxury vinyl planks Hi Jill, thanks for your question. Is there a glue or can heat be used? I am open to finding another vinyl click in company. Not sure I want to know…. Seams should be OVERLAPPED 8” and taped using a waterproof adhesive tape (duct tape). Vinyl planks with attached cork underlayment (which is usually only 1mm- 1.5mm thick) is also a slightly thicker vinyl plank than normal vinyl.