How Much Area Will A Gallon Of Roof Coating Cover

What about non rectangular areas.

How much area will a gallon of roof coating cover. 1 gallon at 1 mil thick will cover 1600 sq. For instance an l shaped surface can be broken into 2 smaller rectangles see illustration below. Do not apply in temperatures below freezing above 120 f 49 c or if rain is expected within 2 hours. For two coats double that figure.

1 gallon at 20 mils thick will cover 80 sq. For example to cover 2000 sq. 1 gallon at 10 mils thick will cover 160 sq. 22 dry mils applying temperature.

In those instances you need to break the area down into smaller rectangles. Ft divide by 500 sq ft to equal 1 coat application. 1 gallon at 5 mils thick will cover 320 sq. Any derivative of 1600 based on the thickness of the coating will tell you how many square feet the product yields.

Add the 2 areas 100 200 300 sq ft to get a total. Add the 2 areas 100 200 300 sq ft to get a total. Square footage is based on multiplying the length of an area x width of that area. 100 square feet per gallon per coat.

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. Highly porous concrete roofs may require more coating for proper coverage. 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.

Square footage is based on multiplying the length of an area x width of that area. See our how to measure your roof guide. One gallon will cover 50 square feet of foam or modified bitumen roofing concrete or bonded tar and gravel roofing.