Historical building restoration projects demand polymer waterproof membranes that preserve aesthetics while enhancing durability. Weifang Luyang’s transparent silicone coatings, applied over existing roofing materials, provide invisible protection against water and UV damage. A centuries-old cathedral in Italy adopted our coatings to safeguard its terracotta tiles without altering their appearance. The silicone’s breathability allowed moisture trapped beneath the tiles to escape, preventing blistering and delamination. Our technical experts conducted on-site trials to optimize application thickness, ensuring compatibility with the building’s historical materials.