Small construction of metal roof insulation and waterproof felt

It is directly constructed on rusty, aging, leaking and leaking metal roofs without replacement. It is fully covered and waterproof. It does not leak for a long time and takes into account waterproof and thermal insulation. It has been used for ten years.

Waterproof and leakproof, anticorrosion, heat insulation, cooling, sound insulation and heat preservation;

The material is soft, light, and easy to install, and it is not affected by the seasonal climate's thermal expansion and contraction, resulting in the destruction of the metal layer;