Vinyl plank flooring is usually made of planks or tiles that can be installed in almost any area of your home. The vinyl can mimic other types of soil and is very easy to install making it ideal for a DIY project. However, the ground beneath your vinyl materials must be properly prepared before installation. This means not only cleaning the floor, but also filling the cracks that could lead to moisture expansion or difficulties later.
If you are preparing specifically for vinyl plank flooring, changed to a patching compound instead of wood filler. This compound is prepared with an epoxy material, plastic and self-leveling pour down and let it harden. This helps block cracks and increases the depressed areas. If your floor concrete has a lot of cracks, I replace it completely. Even the patching compound will not stop an old concrete slab cracking and eventually damage the vinyl.
If you are considering vinyl plank flooring, the floor cannot be pasted or nailed. Floating floors are more tolerant to cracking than other types of soil, so if you only have a couple of small cracks in an area that otherwise is reliable; do not worry about patching up the entire floor. However, you must ensure that the substrates are level and sealed before.