Eave
The lower edge of sloped roof, extending past the wall. |
Eave Vent
Protected openings along roof perimeter (edge) used as the intake part of a ventilation systems, to disapate heat and moisture. |
Elasticity
The flexibility property of returning to an initial for or state following deformation (streching, pulling, compression etc) |
Elastomeric Coating
A coating that is capable of being streched at least twice it's orginal length (100% elongation) and returning to it's original dimensions when pressure is released. |
Elongation
The extension of a material (streching) beyond it's original state. |
Emulsion
A mixture of bitumen (asphalt) and water, with uniform dispersion of the bitumen or water glbules, usually stabilized by an emulsifying agent or system. |
End Lap
The distance of the overlap where one ply, or piece extends beyond the end of the immediatly adjacent underlying ply / piece. |
EPDM
(Ethylene Propylene Diene Monomer) A material used for low slope roof installations. Typically black in color, although some manufacturers have introduced white sheets. |
Epoxy
A class of synthetic, thermosetting resins that produce though, hard, chemical-resistant coatings and adhesives. |
Ethylene Interpolymers (EIP)
Thermoplastic compounds generally based on PVC polymers from which single ply roofing membranes can be formulated |
Exhaust ventilation
Aire that is vented, / exhasted from the roof cavity or attic space. Typically through vents installed near the ridge of a sloped roof. |
Expansion Joint
A structural separation between two building elements that allows free movement between the elements without damage to the roofing system. |
Eyebrow
A dormer, typically small, whose roof line is arched, (curved) resembling the arch of an eyebrow. |
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