The difference between Butyl self-adhesive waterproof membrane and asphalt waterproof membrane

In the field of building waterproofing, choosing the right waterproof material is crucial to ensure the quality and service life of the building. Butyl self-adhesive waterproof membrane and asphalt waterproof membrane are two common choices, they have certain differences in material composition, application methods, performance characteristics etc.

1. Materials 
Butyl self-adhesive waterproof membrane is mainly composed of butyl rubber, isolation film and reinforced fiber, its unique self-adhesive makes it in the construction process without additional glue or hot melt equipment, can achieve excellent adhesion with the base. Asphalt waterproof membraneis made of asphalt as the main component, by adding filler, modifier, etc. Its waterproof performance mainly depends on the viscosity of asphalt and the compactness of filler.

2, Application methods
The application of butyl self-adhesive waterproof membrane is relatively simple, just lay the material on a clean, dry base, and then compacted. Due to its self-adhesive, there is no need to use additional glue or hot melt equipment in the construction process, which greatly improves the construction efficiency. The application of asphalt waterproof membrane is relatively complex, it is necessary to heat the asphalt to the appropriate temperature, and then paint it on the base, and then carry out the next process after cooling and curing. In addition, the technical requirements of asphalt waterproof membrane for construction workers are relatively high.

3, performance characteristics
Waterproof performance: butyl self-adhesive waterproof membrane has excellent waterproof performance, and its self-adhesive can ensure a sticking with the base layer and effectively prevent water in. Although asphalt waterproof membrane also has a certain waterproof performance, but in the long-term use process may appear aging, cracking and other problems, resulting in decreased waterproof performance.
Weather resistance: butyl self-adhesive waterproof membrane has good weather resistance and can maintain stable performance under various climatic conditions. Asphalt waterproof membrane is more sensitive to temperature changing, in high or low temperature environment, it may appear softening or embrittlement phenomenon, affecting the waterproof performance.
Environmental protection: butyl self-adhesive waterproof membrane in the production and using of the process are in line with environmental requirements, will not cause pollution to the environment. The asphalt waterproof membrane may produce harmful gas in the heating process, causing certain pollution to the environment.

4. Application place

Butyl self-adhesive waterproof membrane is suitable for waterproof engineering of various building structures, such as roof, basement, toilet and so on. Its unique self-adhesion enables it to adapt to the construction requirements of various base materials, while its excellent waterproof performance and weather resistance, also an ideal choice for long-term waterproof projects. Asphalt waterproof membrane is more used in some temporary or short-term use of waterproof projects, such as road repair, temporary waterproof and so on.