We would recommend an underlay of 3 – 5mm for laminate flooring. It should be at least 3mm thick to provide comfort and ground levelling properties. But, it should be no more than 5mm thick. If it's any thicker, you could experience problems with the laminate's locking system.
Best underlay for laminate flooring is foam or cork. Best underlay for laminate flooring is foam because it is simple to install, it is a good sound barrier, and is very cost effective. Some best foams have attached additional layer which functions as the best moisture barrier.
Extra Padding Poses a Risk
By adding unnecessary cushioning, you could actually be causing more harm to your floor than good. The added friction could cause the underlayment to wear down quickly and make your floors less stable over time, causing stress on the floating floor's locking system joints.
It comprises padding materials and is typically about 1/4 to 1/2 inch in thickness. The purpose of the underlayment is to provide a sturdy yet comfortable layer for your outer flooring to sit on. Underlayment can be made of wood or even cement, but most often is some type of foam padding.
Two major factors though, will help you to decide which one is ideal for you. The two most important factors you need to consider when choosing an underlay for laminate flooring, is the type of sub-floor you have in the room, on which the floor will be fitted and the kind of insulation you want to provide to it.
There is such a thing as too much cushioning. A thick underlayment with low density will compress when weight is put on the flooring system, causing the flooring planks to bend and ultimately damage the locking mechanism.
We'd like to get one thing clear from the start – underlay thickness does matter. Getting it right can make a huge difference to the final look and feel of your new flooring, having a significant impact on its underfoot comfort, sound and heat insulation, and longevity.
Underlay thickness affects the feel of the carpet. A thick underlay, between 11 and 12mm, will give your carpet a cushioned, soft feel. However, a thinner underlay on the stairs may be easier to install. 9mm is ideal.
Room humidity can vary according to the season, so it is vital that the floor is able to expand and contract. For this reason, make sure you leave an expansion gap on all sides of the floor, around pipes, thresholds and under doors.
When laying laminate flooring it is essential that you leave at least a 10-12mm expansion gap around the perimeter of the floor. There are important reasons to do so, and we will cover them in this article. However, you won't need to worry about any spaces around the perimeter of your installation.
While laminate tends to be more forgiving of subfloor imperfections compared to other types of flooring, it is still important to level your flooring to avoid future damage if you are installing laminate flooring on an uneven subfloor. A level subfloor ensures a more attractive and long-lasting finish.
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.
Underlayment, or “padding” as it's often called, is the spongy, closed-cell plastic foam sheet that comes in rolls. It is rolled out between the actual laminate flooring planks and the subfloor.
12mm planks have an upper hand when it comes to hiding the subfloor imperfections. And thicker flooring can be installed with ease. However, 8mm laminate flooring works only when your subfloor is well levelled and flat.
If it cost an extra $200 for the underlayment for your flooring, it will last for years longer compared to lower quality made underlayment. Basically it will cost a couple of pennies each day for you to have your floor looking nice and staying strong.
When installed with staples, the underlayment sheets are fastened every 2 inches along the edges of the sheet and every 4 inches in the field area. Screws and nails may be spaced farther apart. Sheets can be butted together (just touching, not forced tightly together) or they can be gapped about 1/8 inch, or so.
The answer would be no due to underlayments are specifically designed to work with only one layer. Adding a double layer can actually cause issues with your chosen flooring as the click and lock mechanism can give us due to too much cushion provided by the layers.
This thicker layer provides a good insulation barrier, helping bare feet feel more comfortable in the winter, and an excellent sound buffer, which is ideal for upper floors and apartments and condos. With a built-in vapor barrier, this underlayment is suitable for moisture-prone areas.
The answer will vary depending on the material used for the floor and the way that the boards are constructed, but, as a general rule, both laminate and engineered timber floating floors do need some form of underlay to have optimal functionality and longevity.
Standard Underlay
It acts as a cushion between your floor and the subfloor and is ideal for anyone looking for sound proofing or thermal resistance.
Underlayment is manufactured and meant to be used as only a single layer to allow your floor to be balanced and float properly. If you install any additional underlayment, the base for your flooring will end up being too soft and could jeopardize the integrity of the locking system.
Fibreboard Underlay
This is the best choice for both types of flooring. It works to smooth uneven floors, reduces noise, and acts as a thermal barrier. If the subfloor is uneven, fibreboard works to even dips and dents you can't level out.