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| This PVC roof was built in the 90's and appears to be in good condition. Closer scrutiny revealed a chalky substrate and mild crazing on some sections. |
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Single Ply Roof Maintenance
- Single Ply Roof Repair
- We make spot repairs to your single ply roof. Serviceable repairs will save you money when it is time for the roof to be coated.
- Single Ply Roof Restoration
- Add 10 or more years to your single ply roof with our single ply roof restoration system. Get a seamless roof without costly tear off and disruption. Stop roof leaks and prevent further degradation.
Known Problems with Single-Ply Roofing
- Crazing
- The development of a multitude of very fine cracks on the single ply membrane. It is similar to alligatoring.
| What's a Single-Ply Roof?
Single Ply roofing is a flexible or semi-flexible pre-manufactured membrane typically made of rubber or plastic materials.
Single-ply roofing comes in large rolls and must be glued or mechanically fastened to a roof, and sealed at all seams. This is in contrast to other roofing, typically known as Built-Up Roofs (BUR), which utilize hot asphalt and other hazardous components as the roof is constructed in place. The three major categories of single-ply membranes are Thermosets, Thermoplastics and Modified Bitumens.
- Types of Single-Ply Roof
- Ethylene Propylene Diene Monomer
- Chlorinated Polyethylene
- Chlorosulfonated Polyethylene
- Polyvinyl Chloride
- Thermoplastic Polyolefin
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Why Consider a Single Ply Roof Coating Application?
A single ply roof coating can extend the life of your roof by 10 years or more. Inadequacies in the early generations of single ply membranes have caused roof leaks and premature failure due to chalking, shrinking, adhesive failure and flashing deterioration in many EPDM and CSPE roofs.
Crazing is the development of a multitude of very fine cracks in the roofing material. Plasticizer migration and UV-instability in thermoplastic roof materials such as PVC and CPE have resulted in shrinking, chalking, crazing and embrittlement. |
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| BEFORE: The seams of this EPDM roof have pulled apart, causing leaks in several areas. |
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Single Ply Roof Restoration Process
- Cleaning and Surface Preparation
- The entire single ply roof was thoroughly washed using a 3,000 psi pressure washer. A biodegradeable degreaser was used to ensure a clean surface. All seams, flashings and penetrations were carefully sealed to render the roof watertight.
- Priming
- Priming ensures a good adhesion between the single ply roof surface and the elastomeric coating.
- Top Coating
- 30 dry mils of elastomeric roof coating is applied on the entire single ply roof in 2 coats
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| AFTER: A leak-free, seamless elastomeric roofing membrane now covers the old, weathered single ply roof. The cool roof coating reflects about 90% of the heat from the sun. The roof-top airconditioining units also operate more efficiently since the temperature intake air around the units have been noticeably reduced. |
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