Recently, the building materials industry has witnessed an important comparison of results. Through tests by professional institutions

and verification in actual projects, synthetic roof underlayment has shown outstanding performance far exceeding that of traditional

asphalt felt in terms of waterproof performance, providing a better choice for building waterproofing projects.

In the key indicator tests of waterproof performance, synthetic roof underlayment performed remarkably. It has the characteristics of

high water resistance and low hygroscopicity. Whether facing continuous rain erosion or water flow invasion caused by snowmelt, it

can firmly hold the defense line and maintain stable waterproof performance. This is due to its precise multi-layer bonding structure,

which cleverly forms a continuous and uniform waterproof barrier, effectively eliminating the hidden danger of water leakage at seams

and fastening points, and providing a solid protective shield for the internal space of the building.

On the contrary, although traditional asphalt felt can play a certain waterproof role initially, with the relentless passage of time, its

disadvantages gradually emerge. In a high-temperature environment, the asphalt layer will soften, reducing its ability to resist water

flow; while in a low-temperature environment, it becomes brittle and easy to crack. Over time, moisture can take advantage of the

situation, and microcracks and delamination phenomena will appear, greatly reducing its waterproof performance and unable to

provide long-term and reliable waterproof protection for buildings.

Industry experts said that the comparison results clearly show the huge advantages of synthetic underlayment in terms of waterproof

durability and reliability. It is expected to gradually replace traditional asphalt felt and become the mainstream material for future

building waterproofing projects, promoting building waterproofing technology to a new level, contributing key forces to improving

the quality and lifespan of buildings, and injecting new vitality and confidence into the sustainable development of the construction

industry. When choosing roof underlayment materials, construction enterprises and property owners should fully consider the long-term

waterproof performance of materials to ensure the safety and stability of buildings and reduce the maintenance costs and inconveniences

caused by water leakage problems.