Grace Ultra
Grace Ultra is a premium butyl-based self-adhered roofing underlayment offering the highest thermal stability in the Grace lineup at 300°F. Features 100% butyl rubber adhesive and high-density cross-laminated polyethylene film.
Key Features of Grace Ultra
- 300°F thermal stability - highest in class
- 100% butyl rubber adhesive
- High-density cross-laminated polyethylene
- 30 mil thickness for durability
- Best-in-class waterproofing
- Self-sealing around penetrations
Technical Specifications
25°F - 300°F
Temperature Range
60 days
UV Exposure Limit
Excellent
Split Resistance
Yes
Self-Sealing
198 sq ft
Coverage Per Roll
$120-$160
Per Square (100 sq ft)
Compatible Roofing Types
Advantages
- Highest thermal stability (300°F)
- Butyl rubber for superior adhesion
- Works with all roofing types
- Longer UV exposure window
Disadvantages
- Highest price in Grace lineup
- May be excessive for standard applications
- Professional installation recommended
Grace Ultra Regional Performance Ratings
See how Grace Ultra performs in different climate zones across the United States.
Premium protection
Excellent heat tolerance
All-weather performer
Best for extreme heat
Superior waterproofing
Temperature extremes handled
Frequently Asked Questions
What is Grace Ultra?
Grace Ultra is a premium butyl-based self-adhered roofing underlayment offering the highest thermal stability in the Grace lineup at 300°F. Features 100% butyl rubber adhesive and high-density cross-laminated polyethylene film.
How much does Grace Ultra cost?
Grace Ultra costs between $120 and $160 per square (100 sq ft). Each roll covers approximately 198 square feet.
What temperature range can Grace Ultra withstand?
Grace Ultra is rated for temperatures from 25°F to 300°F, making it ideal for high-temperature applications like metal roofing.
Where should Grace Ultra be installed?
Grace Ultra should be installed at critical areas prone to ice dams and water infiltration, including eaves (minimum 3 feet from edge, 6 feet in snow country), valleys, around chimneys and skylights, and at roof-to-wall intersections.