Yes, it is highly recommended to install underlay before installing laminate flooring. The underlay plays a crucial role in ensuring the success and longevity of your laminate flooring. Here are the primary reasons why underlay is essential before installing laminate floors:

1. Moisture Protection: Underlay with moisture-resistant properties creates a barrier that prevents moisture from seeping up through the subfloor and reaching the laminate planks. Moisture can cause laminate flooring to warp, swell, or develop mold, leading to costly damage. Using underlay with moisture protection safeguards your laminate flooring from potential moisture-related issues.

2. Subfloor Cushioning: Underlay provides a soft and cushioned layer between the laminate floorboards and the subfloor. This cushioning effect helps absorb impacts and reduces wear and tear on the laminate planks, enhancing their durability and lifespan.

3. Noise Reduction: Laminate flooring can produce echoing sounds when walked on, especially in spaces with hard subfloors. The underlay acts as a sound-absorbing buffer, minimizing noise transmission between floors and rooms. This creates a quieter and more comfortable living or working environment.

4. Thermal Insulation: Underlay with thermal properties helps retain heat and provides added insulation to your laminate flooring. During colder months, this contributes to a warmer and cozier feel underfoot, enhancing the overall comfort of your space.

5. Subfloor Leveling: Uneven subfloors can cause laminate flooring to appear uneven and may lead to joint stress and damage over time. The underlay helps level out minor subfloor irregularities, providing a smooth and stable foundation for the laminate planks.

6. Easy Installation: Underlay with a simple installation system, such as a click-lock mechanism or adhesive strips, makes laying laminate flooring much more manageable. It also helps prevent gaps or buckling between the floorboards, ensuring a seamless and professional finish.

7. Manufacturer's Warranty: Many laminate flooring manufacturers require specific underlay to maintain the warranty validity. Installing the appropriate underlay according to the manufacturer's guidelines ensures your flooring is covered in case of any issues.

In conclusion, installing underlay before laying laminate flooring is vital and offers numerous benefits. It protects against moisture, reduces noise, provides thermal insulation, cushions the floor, and creates a level surface. It is an investment that enhances the overall performance and longevity of your laminate flooring while contributing to a comfortable and pleasant living or working environment.