Ethylene-Propylene-Diene-Monomer (EPDM) is a single ply sheet membrane used for roof waterproofing by reliable roofing companies in Ottawa. It can be used in a variety of system designs, and can be fully
adhered, inverted and loosely laid and ballasted. The sheet in its final form is a
combination of the rubber polymer(EPDM) and other components including carbon
black. The sheet is typically manufactured non-reinforced, in a thickness of 45 mils, 60
mils and is now available in 90 mils. Some manufacturers produce a polyester
reinforced sheet for use in a mechanically fastened system. Flashings for detail work are
formed with semi-cured EPDM, which can be molded to fit the contours of corners and
other flashing shapes. Bonding of EPDM rubber is accomplished by roofing contractors in Ottawa with the use of adhesive and seaming tap.
 
 
Advantages and Disadvantages
 
PRIMARY ADVANTAGE of EPDM are:
 
1. Excellent water resistance
2. Excellent weather resistance
3. Excellent heat resistance
4. Good acid and alkali resistance
5. Excellent flexibility
6. Affordable 
 
 
PRIMARY DISADVANTAGES of EPDM are:
 
1. Available only in black and white
2. Poor oil and gas resistance
3. Shrinkage has been a problem ( Certain Manufacturers)
4. Uses adhesive which contains flammable solvents for bonding