How to Solve The Problem of Insufficient Temperature for PVC Flooring Roll Installation in Winter
As we all know, it is difficult to install resilient pvc flooring roll in winter. PVC flooring rolls installed in low temperature environment in winter is very easy to bulge when the spring is warm and the flowers are blooming. Summer and spring are the "maintenance season" of PVC flooring industry. How to avoid the old problem of poor installation quality in winter construction? First of all, start with the resilisent PVC flooring roll itself and the installation auxiliary materials to understand the low temperature characteristics of the material.
PVC flooring is mainly composed of polyvinyl chloride resin and fillers, plasticizers, a small amount of additives and additives, and colorants. The plasticizer determines the softness of the material. The nature of the plasticizer is that the plasticizing effect is very poor at low temperatures. So the floor is particularly hard at low temperatures, and even becomes brittle. This is an innate property that cannot be changed. The water-based adhesive is mainly composed of acrylic emulsion. At low temperatures, the film-forming performance of acrylic emulsion seriously declines, and the performance of the adhesive decreases.
Self-leveling, scientifically known as "cement-based self-leveling mortar" is not ordinary cement mortar. It is a hydration product produced by the reaction of silicate cement, aluminate cement and gypsum. It reacts slowly or even does not react at low temperatures. The material properties are like this, which means that the performance of the floor will definitely be seriously degraded when it is constructed at low temperatures. Let's take a look at the situation in various places. Most construction sites in the north have heating conditions. If there is no heating, water will freeze and there will be no construction conditions at all. In the south, in Shandong, Henan, and Anhui, many sites have no heating, and the site temperature is often less than 10 degrees. Further south, from the Yangtze River Basin to Hunan, Guizhou, and Jiangxi south of the Nanling Mountains, there are even less heating conditions on site, and the average indoor temperature in winter is below 10 degrees.
What are the requirements of the temperature and humidity of installation environment for pvc flooring roll? Many domestic companies, including manufacturers and OEMs, do not understand, and often mark the product promotional materials at random. Resilisent PVC floor roll is an imported product, and its origin is in Europe. European standards have very strict requirements on the "air temperature and humidity" of the installation environment. The air temperature is 218℃, the surface temperature is 215℃, and the relative humidity of the air is 40~70%. The air temperature and humidity are these three indicators. If it is lower than this standard, it is easy to have problems. What are the common heating methods on construction sites at present?
Arson! Arson! Arson! The main solution now is to set fire!
Flames heat the local area quickly and at high temperature for a period of time. When the flames leave, they cool down immediately. The floor shrinks unevenly and seems to be firmly glued, but there is internal stress. When the temperature changes in the spring or the owners move in and turn on the air conditioner, bulging may occur at any time. Flames are more likely to burn the stain-resistant coating on the surface of the floor, causing the floor's stain resistance to deteriorate.
The temperature and humidity conditions for floor installation have been clarified. Setting fire cannot solve the problem, and the construction site is not ready for heating or air conditioning. So what can we do? It's very simple, a high-power industrial hot air blower! Oil-fired, 380V or 220V electric hot air blowers, or even oil-electric dual-purpose hot air blowers. Hot air blowers are not expensive and are very popular!
Look at the problem outside the inherent thinking mode of the industry and find solutions across industries. Hot air blowers are very cheap and will not be much more expensive than the latest iPhone. This is production equipment that can reduce the losses caused by low temperatures and is worth the money. Fuel is not necessarily more expensive than gas bottles, and the electricity on site is provided by Party A or the general contractor.
With hot air blowers, many floor problems are solved, especially for permeable floors. It is normal for the floor to deform due to low-temperature unrolling.
Please note that the site after heating is extremely dry! Extremely dry! Extremely dry! Important things are said three times! Measures to increase humidity must be taken on site! The relative humidity of the air must not be lower than 40%! If no measures are taken to increase humidity, self-leveling will lose a lot of water in the early stage of condensation, and the strength loss will be serious. In an extremely dry environment, the water-based adhesive may only take 10 minutes from scraping to completion of construction, which is too short! Increasing humidity is very simple. Just boil water on site, and boil water in a large iron bucket.
After only three minutes, the boards can be laid normally.
The two pictures above were taken in a city in the northeast, where there is floor heating and Teming T200 commercial roll adhesive is used.
In the picture above, the glue has just been applied for two minutes, so it cannot be laid yet. In the picture below, in the humid south, you need to wait at least half an hour. The red arrow area is the "drying time" of the glue. During this period, the boards are too "wet" to be laid.
The blue arched area is the "construction time" of the glue. This period is the best time for laying. When it reaches the gray arrow area, ordinary water-based adhesives will become ineffective.
In the above picture, the adhesive is within the "construction time". When pressing with fingers, the glue can be clearly transferred to the hand. If the drying time is insufficient, the transferred glue is blurry and the scraping marks cannot be seen clearly. The picture below shows that the "construction time" has been exceeded and it is no longer sticky. Even if it looks sticky on the surface, the bonding strength is very low. The drying time and construction time are closely related to the air temperature! The grasp of time and the understanding of humidity are crucial! Thermometers are essential tools on the construction site. They are smaller than mobile phones and cost less than 100 yuan. Taobao supplies them in large quantities. With a thermometer and hygrometer, you will have a good idea before construction.