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																	Modified bittumen roof. 
									
	
		
	
																	Modified bitumen roofing may have a granular surface as shown here or it may be smooth. 
																	Get to know more about one of the most popular commercial roofing systems. 
																	The base layer provides waterproofing and a surface for the cap to bond to. 
																	Renting a large propane torch is inexpensive. 
															
													
									
	
		
	
																	Modified bitumen was developed in europe during the 1960s and it is a rendition of the old built up roofing bur system. 
																	Modified bitumen sbs roofing systems. 
																	Bitumen roof advantages and disadvantages. 
																	These steps show a torch down method which looks a bit scary but actually is not too difficult. 
															
													
									
	
		
	
																	One of the longer lasting roofing options for flat roofs is bitumen roofing or a modified bitumen roof. 
																	Advantages there are a wide range of methods available for installing modified bitumen roofing from using a hot torch to using a sealant backed peel and stick rolls. 
																	Modified bitumen is a 2 part low slope roof system that is made when polymers are added to asphalt to change its properties. 
																	The 2 part system consists of a base layer and a cap layer. 
															
													
									
	
		
	
																	Modified bitumen roofing was designed for use on buildings that have a low slope or flat roof. 
																	What is modified bitumen. 
																	If you install the smooth product cover it with aluminum coating.