Modified Bitumen
Membrane degradation due to exposure to chemicals, oils and UV is a concern with modified bitumen.
Known Issues
 |
 |
 |
| Alligatoring Cracking of a membrane roof producing a pattern similar to an alligator's hide. Granule loss accelerats this condition unless the membrane is protected by a roof coating. |
Seam Failure Open and unadhered seams are often the caused by improper torch application. They must be repaired immediately while the membrane is still in good condition. |
Ponding Water Retention of water on a caused by inadequate roof drainage or structural deflection. Water can enter failed seams or punctures and cause leaks. |
Modified Bitumen Roof Maintenance
Leaks in modified bitumen roofs are difficult to isolate and a seamless roof coating system is a cost effective solution.
The surfacing of the sheets is also a maintenance concern. Modified Bitumen sheets are not as sensitive to ultraviolet light as built up roofs but there is still degradation. Studies have indicated that a reflective coating applied within five years of installation can extend the service life of the membrane by 10 or more years.
Water-borne or solvent-borne roof coatings may be used. However, a solvent-based coating offers greater resistance to ponding water.
Modified Bitumen Roof Restoration
Add 10 or more years to your built up roof with our modified bitumen roof restoration system. Get a seamless roof without costly tear off and disruption. Stop roof leaks and prevent further degradation.
