Quartz stone is a new type of artificial stone made of 92% quartz sand powder as the main aggregate, 8% resin, pigment and other auxiliary materials as the main binding material, after mixing, it is made by vacuum pressure vibration molding, curing and polishing.

Due to its high density and strong hardness, quartz stone has excellent scratch resistance and stain resistance, no scratches, no penetration, stain resistance, corrosion resistance, high-temperature resistance, green environmental protection, and direct contact with food.

But from a physical point of view, quartz stone has slight thermal expansion and contraction and has certain mechanical properties such as shrinkage stress, impact toughness, and elongation at break. When the material cannot withstand the internal stress caused by thermal expansion and cold contraction Cracks occur when subjected to severe external impact.

Quartz stone countertop cracking situation and reasons:

1. Cracks in the center of the countertop: high temperature, external impact, uneven cabinet or backing plate, internal damage to the plate, etc.;

2. Cracks at the corners: the wall is too tight without shrinkage joints, the height and height between the two cabinets are uneven or not leveled, and the tabletop shrinks unevenly due to external impact or temperature changes and cracks;

3. Cracks around the above-counter basin: There is no gap between the above-counter basin and the basin hole, the basin hole is not polished smooth, and the countertop shrinks unevenly due to external impact or temperature changes and cracks;

4. Cracks around the furnace hole: there is no gap between the gas stove and the furnace hole, the furnace hole is not polished smooth, and the surface shrinks unevenly due to external impact or temperature changes;

5. Cracking of the back retaining water: the cabinet is not flat or the backing plate is not flat;

6. Cracks on the part of the table top connected to the backwater edge: the glue is not firmly bonded;

7. Cracks at the joints of the countertops: When the installation workers are jointing, the seams are not aligned, the glue is not evenly applied, or the glue is added to the glue, or too much glue is added to make the joints more brittle, and they will crack when they are slightly impacted during use. 

In order to prevent the quartz stone from breaking, you should pay attention to the following situations.

In order to ensure the installation quality of the countertop, the following points need to be paid attention before installation:

1. When designing plane splicing, the physical properties of quartz stone should be considered to avoid the consequences of joint cracking caused by thermal expansion and contraction or stress concentration. When selecting the splicing position, the force of the plate must be fully considered. Avoid connecting at corners or furnace mouths.

2. When designing the corners of the tabletop, stress concentration should be fully considered, which may cause cracks at the corners of the tabletop. Therefore, during processing, all corners should be kept with a radius of more than 25mm.

4. When the countertop is installed, there should be a 2-4mm telescopic gap between the countertop and the wall, so as to effectively ensure that the countertop will not crack due to thermal expansion and contraction. The maximum distance between the table and the support frame or support plate shall not exceed 600 mm to reduce deformation or even breakage of the table;

5. During daily use, it is also necessary to avoid cracking caused by external factors, such as: do not hit the quartz stone countertop with gravity, do not directly contact the extremely high-temperature pot or utensil with the countertop, etc., you can put a layer of heat insulation

3. When designing the opening position, the opening position should be greater than or equal to 80mm from the edge of the table to prevent cracking of the hole position, and the corner of the opening should be rounded with a radius of more than 25mm.

Welcome to communicate more details about quartz countertops and quartz slabs.