Sandwich or puff sheets, also known as PU (polyurethane) forms, are a type of roofing material that consists of two metal roofing panels with a layer of high-density polyurethane foam in between. This unique construction offers a number of benefits for homeowners and business owners alike.

One of the main advantages of PU forms is their ability to provide excellent heat insulation. The foam layer in the middle acts as a thermal barrier, helping to keep your building cooler in the summer and warmer in the winter. This can help to reduce your energy costs and make your building more comfortable year-round.

In addition to their heat insulation capabilities, PU forms also offer excellent sound insulation. The foam layer helps to absorb and dampen noise, making your building quieter and more peaceful. This can be particularly beneficial if you live or work in a noisy area or if you have a home theater or other sound-sensitive space.

PU forms also offer an attractive look for your roof. The foam layer gives the roof a distinctive and modern appearance, and the sheets are available in a range of colors and finishes to suit your personal taste.

Overall, PU forms are a highly effective and attractive choice for roofing. Their ability to keep out heat and noise, as well as their good looks, make them a popular choice among both home and business owners.