FAQ of Steel Roofing Sheet

1.Which kind of steel is best for roofing sheet?
Hot dipped galvanized steel sheets are cheaper steel roofing solution for you. Hot dipped galvalume/alu-zinc steel sheets are better steel roofing solution than galvanized steel sheets. Color coated galvanized or galvalume steel sheet(PPGI/PPGL) are the best choice for roofing sheet with long use time and beautiful color surface although its price are higher.
2.What size are steel corrugated roofing sheets?
GI/GL/PPGI/PPGL corrugated roofing sheets are available and popular in thicknesses from 0.12mm to 0.50mm. 
900mm/800mm width after corrugation(1000mm/900mm width before corrugation) are very common in market.
WITOP steel  can supply sheet length from 1m up to 12m. 
Especially, customers can choose all of our standard colors for roofing surface for color coated corrugated roofing sheet.
3.Which roofing color is best for hot and wet climate?
According to data, green color roofing sheets are the best for hot and wet climate, considering green color can naturally reduce the heat island effect and keep indoor in low temperature.