How Much Area Will A Gallon Of Roof Coating Cover

One 5 gallon pail covers 250 square feet of roof with 2 coats.

How much area will a gallon of roof coating cover. 1 gallon at 5 mils thick will cover 320 sq. 22 dry mils applying temperature. Highly porous concrete roofs may require more coating for proper coverage. 1 gallon at 10 mils thick will cover 160 sq.

1 gallon at 20 mils thick will cover 80 sq. Square footage is based on multiplying the length of an area x width of that area. 1 gallon at 1 mil thick will cover 1600 sq. Square footage is based on multiplying the length of an area x width of that area.

One gallon will cover 50 square feet of foam or modified bitumen roofing concrete or bonded tar and gravel roofing. For example to cover 2000 sq. Ft divide by 500 sq ft to equal 1 coat application. 2000 500 4 5 gallon pails.

What about non rectangular areas. For all three products allow one gallon of roof coating for every 80 square feet of corrugated metal roof or 100 square feet of smooth metal roofing. 100 square feet per gallon per coat. In those instances you need to break the area down into smaller rectangles.

For instance an l shaped surface can be broken into 2 smaller rectangles see illustration below. For instance an l shaped surface can be broken into 2 smaller rectangles see illustration below. Add the 2 areas 100 200 300 sq ft to get a total. In those instances you need to break the area down into smaller rectangles.

Add the 2 areas 100 200 300 sq ft to get a total. For two coats double that figure. What about non rectangular areas.