Homeowners need to supervise the installation process of ground decoration. Once quality problem is found after installation, it will need to dismantle the previous work, which will cause inconvenient to homeowner’s normal life. Then, what should homeowners pay attention to when having ground decoration?
How to prevent uneven surface of plastic flooring?
Poor surface evenness of plastic flooring is mainly caused by the following reasons:
1 substratum has poor evenness.
2 operator do not apply adhesive uniformly. The diluent in adhesive is volatilized when paving plastic flooring, which causes the fluidity of adhesive decrease; it is not easy to smooth adhesive, so finished plastic flooring is undulate.
Operators must strictly following the steps mentioned below to solve this problem:
1 control the evenness of substratum strictly. Have leveling treatment for substratum when it is uneven.
2 apply adhesive with jugged scraper blade. It can make the adhesive layer uniform in thickness. The adhesive applying direction should be crossed.
3 the construction temperature should be controlled in 15 to 30 degree. Relative humidity should no more than 70%.
How to prevent the cavity of tile and natural stone
After tile or natural stone is pasted, knock on the plate to check whether there is cavity phenomenon. Sometimes, the plate is loose when people step on it. The reasons that cause this phenomenon may be:
1 the substratum is not clean or do not absorb enough water; the cement paste does not applied uniformly or the applying time is too long, which decrease the cohesive action of cement paste.
2 the dust on the back of the tile or natural stone do not remove or tile and natural stone do not absorb enough water before pasting. When you paste dry tile and natural stone directly without soaking in water, the water content in cement mortar will be absorbed quickly which will cause the dehydration of cement mortar and decrease its strength, affect the bonding of cement mortar, substratum and tile.
3 the cement mortar should be dry mortar. Dilute or uneven mortar can also cause cavity.
Method for preventing cavity:
1 the surface of substratum must be clean and wet by water for good bond of substratum and cement mortar. No excessive water is found on substratum. Neat cement grout should be brushed uniformly on the substratum and applying cement mortar binding layer timely after cement grout is brushed.
2 clean the dust and stain on the back of tile and natural stone slab and wetting before pasting. The best time to paste tile and natural stone slab is when it reaches surface dry saturated condition.
3 the mix proportion of dry cement mortar is 1:2 to 1:3 (cement: sand). Cement is better to be ordinary Portland cement with cement mark higher than 325. Sand must be medium-coarse sand with mud content no more than 3% and screening out organic sundries. The thickness of cement mortar is better to be 2cm to 4cm. cementation of fissures
4 crack pouring on the second day of pasting stone slab. Clean the floor and remove the mortar before having crack pouring. Crack pouring should be done in several times.
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