Black jack eterna kote 4 75 gallon silicone reflective roof coating lifetime warranty item 484330.
													
																	Roof coating material square footage. 
									
	
		
	
																	Square footage is based on multiplying the length of an area x width of that area. 
																	For instance a 7 12 roof pitch means that the roof rises 7 inches for every. 
																	Black jack elasto kool 1000 5 gallon elastomeric reflective roof coating 10 year limited warranty item 139941. 
																	It is often compared to slope but is not exactly the same. 
															
													
									
	
		
	
																	How do i calculate square footage. 
																	What about non rectangular areas. 
																	Knowing the square footage of your roof helps determine how many pails of elastek coating you will need. 
																	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. 
															
													
									
	
		
	
																	1 it can resist ponding water for extended periods of time and 2 it can adhere to most substrates without a primer. 
																	Measure the length and width of the roof to determine the size in square feet by using the following formula. 
																	The cost of applying a polyurethane foam coating can be as little as 3 per square foot. 
																	These coatings are applied anywhere from 2 to 3 5 gallons per 100 square feet depending on the substrate. 
															
													
									
	
		
	
																	6 25 square foot 1 12 square foot 2 25 square foot 1 50 square foot 3. 
																	For pricing and availability. 
																	Length x width square feet a good rule of thumb is that every 100 square feet of roof equals one gallon of coating. 
																	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. 
															
													
									
	
		
	
																	The cost of acrylic coating will be between 5 to 6 per square foot. 
																	Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run. 
																	Gaf roof mate base coat 5 gal. 
																	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. 
															
													
									
	
		
	
																	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. 
																	Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy. 
																	This price is for a coating over a pre existing roof system such as a rubber membrane or metal roof. 
																	For instance an l shaped surface can be broken into 2 smaller rectangles see illustration below.