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How to stop laminate floor from creaking


1 Precautions against the floor creaking

1.1 Control measures for milling flutes accuracy in the production process

Reasonable control of the machining accuracy of the milling flutes of the floor lock can not only ensure the normal installation and use of the floor, but also optimize the production cost and product quality. The specific control measures are as follows.

1) When producing in the factory, it shall be produced in strict accordance with the standard locking drawings and projection drawings and modules provided by the tool company.

2) When adjusting the thickness of the mortise, the tenon should be 0.02 mm smaller than the thickness of the mortise, forming a gap between the two, and ensuring that the assembly in the horizontal direction after lock assembly is ≤0.05 mm.

3) Pre-tension can ensure a seamless connection between the floors, and can also prevent dust and foreign bodies from entering the floor. When adjusting the positioning, the pretension force of the mortise should be controlled from 0.03 to 0.05 KN.

4) When assembling the floor, it must be flat, and it must not be lower or upward. When it tilts down, the vertical support force of the floor is not in place, and it will shift each other when stepping on it, causing noise, and it is easy to damage the mortise structure.

5) When installing or adjusting the tool, the final action must be adjusted inward or upward, so that the operation can effectively reduce the error.

6) In order to ensure an accurate projection effect (see Figure 1), when sawing the sample, the saw blade should be perpendicular to the floor to be cut, and the thickness of the sawed sample should be 3±0.5 mm.

(Figure 1:Projection calibration diagram of laminate floor lock)

7) Because the line width on the projection figure itself is 0.03 mm, the projector is not completely accurate. In order to better ensure product quality, it is recommended to use other measuring tools such as callipers for auxiliary inspection.

8) In the process of producing laminate flooring in the factory, the locking buckle should be checked regularly every two hours, and the locking accuracy should be checked by projectors, gauges, cursor callipers, and laying experimental floors.

Strictly complying with the above 8 requirements can effectively avoid the inconvenience to people's lives caused by the noise.

1.2 Control measures for the stability of laminate flooring during production

The stability of laminate floor mainly depends on the stability of the substrate. Good stability of the substrate can ensure the stability of the physical and chemical properties and appearance of the floor for a long time. Therefore, in the process of producing laminate flooring in the factory, it is necessary to strictly control the physical and chemical properties of the substrates used, especially the expansion rate of water absorption thickness, and strictly implement the corresponding standards. Substrates that do not meet the corresponding standards should be rejected.

1.3 Quality control measures for the installation of laminate flooring at the construction site

After passing the quality inspection, the laminate floor reaches the construction site, and its installation quality is the key to ensure the normal use of the floor. According to the analysis of the impact of installation on the sound of the floor, the installation specifications and requirements should be strictly implemented before installation.

1) Conscientiously do a good job in ground levelling testing. If the levelling of the ground does not meet the installation standards (the height difference ≤ 5/2 000 mm), the customer should be informed in time about the possible floor noise and other problems, and it is recommended to re-repair the ground to level it. Even if the customer insists on installing, it can prepare the customer for the sound problem and reduce the later customer's dissatisfaction.

2) When installing the floor, you should reserve enough expansion joints (the surrounding expansion joints ≥ 8 mm), lay the floor mats in place and clean the ground.

3) After the floor is installed, the floor should be detected in time for noise problems. When the floor is installed in 5 rows, it needs to be trampled along the splicing place 3 to 4 times, focusing on the sound of the splicing at the end of the floor (width), by the sound of the connection in the length direction. If there is a serious floor noise problem, the installation direction must be changed in time, or other practical on-site solutions, such as gluing, must be adopted. Solve the problem of floor noise in time on site can avoid secondary rework, reduce unnecessary maintenance costs, and reduce after-sales maintenance costs.

2.Simple and effective sound detection method for laminate floor

1) The floor levelling of the laminate floor must meet the floor levelling requirements for paving.

2) The floor mat film of 2 to 4 mm thickness should be laid before laying the laminate floor.

3) When laying each batch of floors, you should ensure that the width direction is no less than 6 to 8 wood floors and the length direction is not less than 3 to 6 wood floors.

4) After the laminate floor is paved, step down at least 5 to 8 times along the mosaic of the floor to judge whether there are floor creaking noises. If there is no sound at the floor splicing, the floor is qualified, otherwise the installation will be adjusted.

5) In the conventional quality control, the factory should carry out lock projection detection every 2 hours in actual production, and at the same time, the laying sound test should be carried out according to the above steps for each batch of floors.

6) The judgement criterion (evaluation indicator) is that no sound can be heard.

The above testing methods are suitable for controlling the quality of floor locks in the factory production process. If obvious noise problems are found in the process of testing and paving, the production equipment should be adjusted in time to avoid batch unqualified floors. We can offer laminate flooring pre-shipment inspection for you.

About Us

Global ZX Floor Doctor Limited Professional China Floor Inspector We focus on floor inspection only! After high school, Peter Zhang (President of Global ZX Floor Doctor Limited) directly went into foreign trade for 5 years. This trade normally has nothing to do with the inspection work, but it led to his first connection with import/export business, and made him know clearly about the different desires of international buyer and seller. From 1995, Peter started to run flooring export business of his own in China, called “New Century company”. The export volume of this company was in the top three of local area since 2003. This experience also introduced many important friends with sparkling ideas to us. And in 2012, our factory “VGreen flooring” was first founded. In this capacity, our team not only saw how flooring was made but also many manufacturing defects, which are crucial to the flooring buyers and the final use of terminal consumer. With sense of responsibility, the thought of “find a way to help foreign buyers reduce import risks” was inspired among us. A reliable friend of Peter, whom own his flooring wholesale mall in Russia called Michael suggested, “a professional inspector or quality control manager in China locally is what I am looking forward to, that may ease burden and save my time.” This great idea is quite a proper answer and very specific to our long-time preoccupation----all clouds were dispelled, thus Global ZX Floor Doctor Limited Company (A.K.A. CFI) is ready to be born. As an independent third-party, we chose Hongkong, a neutral and open city, as our basement to offer the international flooring services. Over the past 20 years worked in flooring field, the crew  have learned deeply inside the China flooring Industry and maintained communications with hundreds of Chinese floor factories and suppliers that involving various kinds of flooring, such as bamboo, hardwood, laminate, engineered, WPC, SPC, etc. With advanced management system, professional training and long-term contact with Chinese flooring suppliers, the team of Global ZX Floor Doctor is mainly specialized in “flooring inspection of origin” and “flooring field advisor”. With efforts of more than 20 professional Project Managers, our services of inspection and advisor are available for flooring importers, distributors, contractors, architects all over the world; or anyone on the globe concerning a flooring import business with China. CFI SPECIALIZES IN FLOORING INSPECTION CFI inspectors will examine the floor factory, carry out your order specifications, inspect random units and identify defects. You are in control of the whole processes through our constantly updated reports on quality and producing progress. Onsite Monitoring CFI personnel are available to monitor production at your floor supplier factory to ensure all customer requests of quality are full satisfied. Customized floor Inspection Options CFI strictly assist in customized inspection criteria to meet your special requirements. Detailed Inspection Report CFI personnel will submit detailed flooring inspection report on specification and models, assembled appearance, T&G deformity, color variation, moisture content, coating adhesion etc.. Various floor styles inspection We can handle most types of flooring: Bamboo floor, Hardwood floor, Laminate floor, Engineered floor, Outdoor Decking, WPC floor, LVT, Cork and floor accessories.

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Along with the increasing global trade needs, and supply chains get more and more complex. Floor buyers of brands, retailers and importers are urgently need to strengthen the communication with their manufacturer around the globe. Our target on Flooring Inspection is to make this process much more easier for our clients to control over the quality and seize more latest information of China flooring industry by our services. CFI would like to be your eyes in China floor factories, we do hope to be your best valuable partner in Flooring Industry of China.


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