Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy.
Roof coating material square footage.
6 25 square foot 1 12 square foot 2 25 square foot 1 50 square foot 3.
Black jack eterna kote 4 75 gallon silicone reflective roof coating lifetime warranty item 484330.
Length x width square feet a good rule of thumb is that every 100 square feet of roof equals one gallon of coating.
For instance an l shaped surface can be broken into 2 smaller rectangles see illustration below.
The cost of applying a polyurethane foam coating can be as little as 3 per square foot.
For pricing and availability.
Silicone has two major advantages over the other four types of coatings that should be considered when searching for the best roof coating.
It is often compared to slope but is not exactly the same.
How do i calculate square footage.
Flat roof coatings will cost between 0 15 to 2 00 per square foot for materialsand an additional 0 50 to 3 00 per square foot for laboras broken down in the cost per square foot section above.
In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches.
Black jack elasto kool 1000 5 gallon elastomeric reflective roof coating 10 year limited warranty item 139941.
1 it can resist ponding water for extended periods of time and 2 it can adhere to most substrates without a primer.
Light gray acrylic reflective elastomeric roof coating 15 year limited warranty model 890277419 view the roof coatings.
If your roof is flat or has no more than a 3 in 12 pitch you can calculate its total square footage by simply multiplying the length by the width.
What about non rectangular areas.
Measure the length and width of the roof to determine the size in square feet by using the following formula.
These coatings are applied anywhere from 2 to 3 5 gallons per 100 square feet depending on the substrate.
Gaf roof mate base coat 5 gal.
Square footage is based on multiplying the length of an area x width of that area.
This price is for a coating over a pre existing roof system such as a rubber membrane or metal roof.
For instance a 7 12 roof pitch means that the roof rises 7 inches for every.
The cost of acrylic coating will be between 5 to 6 per square foot.
Silicon is the agreed upon premier spray application but the material costs can drive installation prices up to 9 10 per square foot or more.