3. Longevity of Roofs Heat reflective sheets can also contribute to the longevity of roofing systems. By reducing the thermal expansion and contraction that roofs experience due to temperature fluctuations, these materials help prevent cracking and other forms of damage, ultimately prolonging the lifespan of the roof.
Once the graphics are finalized, manufacturers move to the creation of the tin boxes themselves. The process involves cutting and shaping sheets of steel, which are coated with a layer of tin to prevent rusting and ensure durability. The pieces are then pressed into shape and assembled—usually featuring a hinged lid and a sturdy handle, reminiscent of the lunch boxes popularized in the mid-20th century.
