You can choose the thickness of the tin sheet yourself, and then buy the materials and ask someone to install them, which is more affordable;

the thickness of tin sheet is different, and the price is different;

1.5 is about 55 square meters, excluding heat preservation materials;

about 65 square of p>1.6;

about 81 square of p>1.75;

about 91 square of p>1.1;

about 111 square of p>1.2;