- Author
- Martin, J. W. | Rossiter, W. J., Jr. | Embree, E.
- Title
- Is Your Adhesive Layer Thick Enough?
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Journal
- Professional Roofing, Vol. 21, No. 5, 30-37, 1991
- Keywords
- roofs | adhesives | seams | bonding | joint failures | strength | creep rupture | peel stress | stress (mechanics)
- Abstract
- Research indicates that the lifetime of an EPDM roof may be prolonged significantly with a thicker layer of adhesive in the seams. The objectives of this research on the strength and creep-rupture properties of EPDM joints were: [*] To determine from a small but important set of material and fabrication variables (adhesive thickness, cure time, mechanical load, adhesive type and surface cleanness), those variables which are primarily responsible for causing joint failures; [*] To rank these experimental variables in the order in which they affect the strength and creep-rupture life of butyl-adhered EPDM joints; and [*] To determine the maximum peel stress an EPDM joint can sustain over its design life.