Comparative analysis of advantages and disadvantages of waterproof membrane and waterproof coating

Due to the difference of material composition and appearance between waterproof membrane and waterproof coating, the material characteristics, construction technology, applicable parts and application environment are different. Degao waterproof engineer made a comparison of the comprehensive performance of the two, through the comparison, let consumers roughly understand what kind of products they need.


Waterproof coiled material: convenient construction, short construction period, no need of maintenance after forming, not affected by temperature, less environmental pollution, easy to master layer thickness according to design requirements, accurate material calculation, convenient construction site management, not easy to cut corners, uniform layer thickness, can effectively overcome the stress of base course when empty laying (can maintain the integrity of waterproof layer when large cracks occur in the base course).

Waterproof coating – any complex base can be made into a continuous and integral waterproof layer; The equipment is simple and the construction technology is easy to master. The coating waterproof layer and the base course have 100% bonding surface (except for cracks, nodes and other parts using the reinforcement layer empty paving method). Most of the water leakage of the coating waterproof layer within the service life is caused by the crack width of the base course, which is larger than the extensible range of the waterproof coating. The causes and parts of the water leakage are very easy to find. The warranty is very convenient, as long as a small amount of waterproof materials are used to repair the cracks and damaged parts. High quality waterproof coating can achieve success in the back water surface waterproof. Some waterproof coatings can be applied on wet base and form waterproof layer.


Waterproofing membrane: it needs to be cut according to the shape of the waterproof base. For the base with complex shape, it needs several pieces of splicing, so it is difficult to bond the overlapping parts of the waterproofing membrane; Complete and absolute sealing will become the main problem, and the hidden danger of water leakage is the biggest; The protection of waterproofing membrane after construction and maintenance after leakage are also difficult problems. If there is only one penetrating damage, degumming and leakage of any part, the waterproof function of the whole coherent layer will all be lost. If the damaged and defective parts cannot be found, it is impossible to repair them locally, so we have to redo the waterproofing.

Waterproof coating – the coating needs a certain time of physical and chemical reaction to form a waterproof layer; Some waterproof coatings produce harmful gas during curing, which is harmful to human body. Some waterproof coatings need to finish a waterproof layer for many times, and each time should have a certain interval, so the final completion of the waterproof layer takes a long time; In the construction process of waterproof coating, the site management is very important. There will be opportunities for shoddy work and shoddy manufacture in the case of management negligence; The thickness of waterproof coating layer is determined by the coating times during construction. In addition to the coating times, the solid content of coating itself is the decisive factor of film thickness.

Post time: Jul-14-2021