Here is a quick comparison:
|CATEGORY||MECHANICALLY ATTACHED||FULLY ADHERED||WINNER|
|WIND UPLIFT:||Great wind uplift resistance (depending on attachment method)||Superior wind uplift resistance||FA|
|HAIL RESISTANCE:||Good resistance (depending on substrate)||Superior resistance (depending on substrate)||FA|
|INSTALLATION COST:||Less expensive||More expensive||MA|
|INSTALLATION TEMPERATURE:||Any temperature||Warmer temperature||MA|
|ENERGY EFFICIENCY:||Lower due to air intrusion and fluttering of the membrane||Higher – acts as an air barrier||FA|
So which is best?
- That all depends on your budget, type of building, and your performance expectations.
- A Fully Adhered system will out perform a Mechanically Attached system every time.
- When it’s time for a new roof, always consult with an experienced and trusted roofing contractor to determine the best system for your building.
Pro Tip: Mechanically Attached and Fully Adhered both require proactive preventative maintenance programs to prevent hazards from becoming leaks and to prolong the life of the membrane. Manufacturer’s require a maintenance program to keep the warranty in good standing. Rhoden Roofing offers a preventative maintenance program called RoofCare. RoofCare is designed to save building owners money, increase the lifespan of the membrane, and reduce headaches that come from unexpected & preventable leaks.
Fully Adhered Illustration
Mechanically Attached Illustration