Most manufacturers recommend that the floor be flat to within 3/16” in a 10 ft. radius. These measurements are consistent with most other types of floor coverings. On floating floors, vertical movement needs to be kept to a minimum.
Underlayment can help smooth things out, though, but the type you choose will vary depending on your specific reasoning for wanting an even subfloor. That can make choosing the right one for you rather tricky, so here's a quick guide that should lend a helping hand in getting the best underlayment for uneven subfloors.
Floating flooring is not recommended for uneven floors as this increases risk of the planks moving or splitting apart. Ceramic and porcelain tiles will also crack over time if the subfloor is uneven.
The best flooring for uneven floors due to its attractiveness and durability is epoxy, which can also be designed to mimic a wide variety of appearances. Not only will epoxy finish out the floor, but it'll also even it out.
But, it can also be one of the big disadvantages of floating floors if you live somewhere that experiences extremely high humidity. This is also due to the space between the floor and subfloor. If a lot of moisture accumulates in there, it may contribute to warping, pitting, or mold growth.
Without underlayment to add a layer between these damp subfloors and the surface flooring, your laminate can quickly become wet, warped, and mildewy, harming its overall integrity. Moisture over time can also break down floor adhesive which causes the floor to start warping.
Fibreboard underlay
If you're wondering what's the best underlay for laminate or wood flooring, Fibreboard is a brilliant choice. It helps smooth uneven floors, reduces noise and acts as an excellent thermal insulator. Not to mention, it's also the number one choice of underlay for laminate and wooden floors.
Uneven floors in a house are usually a sign of a foundation problem, but not always.
Don't install your laminate on any floor with a drain. Don't install laminate on any uneven subfloor or outdoors. Don't install your laminate over residential carpet. Don't install a second layer of laminate underlayment.
The main things that you need to consider when choosing the thickness of your laminate floor are the evenness of your subfloor and any reason you may have to be worrying about noise reduction. If you have a subfloor that is in any way uneven, it pays off to choose a thicker laminate.
One of the best ways to fix the issue of uneven floor is to use floor patch product. It can be used in concrete subfloor or wooden subfloor. It is best for leveling floors that has dips, slanting issues, cracks and chipping problems.
For only slightly uneven flooring, sturdy materials such as luxury vinyl plank can also be used for full coverage. The benefit of sturdier types of flooring is that they will give the floor the illusion of being more even than it actually is. For very uneven flooring, laminate sheets or tiles may be a better bet.
Laminate flooring can hold up to general wear and tear as long as you take proper precautions. Tightly seaming the boards to protect them from moisture is one such precaution. Installing padding is also necessary for laminate flooring in most cases.
The direction you install your flooring makes an immense impact on the flow and spatial feel of a room. We recommend placing the planks parallel to the widest wall. This will create an elongated look by drawing attention to the longest portion of the space.
Laminate flooring cannot ever be installed on a subfloor made of carpet or padding. Wood and concrete are the idea subfloors. In some instances, you might be able to install your flooring over an existing floor, but it is important to check prior to installation if it is a suitable material.
While there are a number of good options in the market, cork and foam are the usual favorites for a laminate floor underlay. Depending on your lifestyle, you may appreciate cork for its thickness and sound absorption; foam, on the other hand, is an excellent, cost-efficient material that works as a moisture barrier.
Floating floors can be susceptible to moisture and humidity, which can cause warping or buckling. They also tend to be more prone to gaps between planks due to their lack of attachment.
A floating floor can have a slight bounce or give underfoot, but it should not feel excessively bouncy or unstable. A small amount of deflection is normal and can be caused by a number of factors, such as the type of subfloor, the thickness and quality of the underlayment, and the installation method.
Glue-down floors are better for rooms with heavy load and foot traffic because they're more stable. On the other hand, floating floors have more room for warping and buckling that are triggered by changing temperature and moisture levels in the room.