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Lucas Specialty Rock 3/8 in. Fire White Marble Roofing Aggregate Bright White 80 lb. Bag
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Lucas Specialty Rock 3/8 in. Fire White Marble Roofing Aggregate Bright White 80 lb. Bag
This is a bag of Lucas Specialty Rock Fire White™ 3/8 in. marble roofing aggregate in Bright White, meeting ASTM D1863. Each 80 lb. bag provides loose ballast and surfacing aggregate for built-up and modified bitumen roofs. Pair with a mineral-surfaced membrane system or flood coat as specified.
Key Features:
- Bright white marble: Marble aggregate in Bright White reflects sunlight on low-slope roofs.
- 3/8 in. sizing: Graded 3/8 in. stone sized for roofing ballast and surfacing.
- ASTM D1863: Meets ASTM D1863, the standard specification for mineral aggregate used on built-up roofs.
- Fire White formula: Fire White™ marble aggregate designed for roofing applications.
- 80 lb. bag: Supplied in an 80 lb. bag for manageable handling on the roof.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Lucas Specialty Rock |
| Sell unit | 1 bag, 80 lb. |
| Product line | Lucas Specialty Rock Fire White™ Marble Roofing Aggregate |
| Color | Bright White |
| Nominal size | 3/8 in. aggregate |
| Material | Marble aggregate |
| Coverage per unit | Depends on specified ballast rate (typically stated as lb per sq ft in project specs) |
| Weight | 80 lb |
| Approvals | ASTM D1863 |
| Intended use | Roofing ballast and surfacing aggregate for low-slope roofs |
| Algae resistance | No |
Coverage & How Much You Need:
One 80 lb. bag covers an area determined by the specified ballast or surfacing rate in the project specification; at common ballast rates, calculate bags needed as roof area times rate divided by 80 lb.
Fit and Compatibility:
Use over built-up or modified bitumen membrane systems where loose aggregate ballast or flood-coat surfacing is specified. Not a standalone roofing product; membrane and flood-coat materials are sold separately.
Frequently Asked Questions (FAQ):
Q: What is included?
A: One 80 lb. bag of 3/8 in. Fire White™ Bright White marble roofing aggregate.
Q: What standard does it meet?
A: It meets ASTM D1863 for mineral aggregate used on built-up roofing.
Q: How many bags do I need?
A: Divide the total pounds of ballast required by the project specification by 80 lb per bag.
Q: Why white aggregate?
A: Bright White marble reflects sunlight and brightens the roof surface.
Q: Can I spread it by hand?
A: Yes, it is commonly broadcast or spread from bags; an 80 lb. bag requires two-person handling or a buggy on the roof.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Confirm the specified ballast rate in pounds per square foot before ordering; under-ballasting can compromise wind resistance on loose-laid systems. Broadcast evenly to the specified depth and keep aggregate away from drains and flashings where the detail calls for it. White marble also brightens work areas on the roof.
80 lb. bags are heavy; use proper lifting technique or material-handling equipment, and wear gloves, boots and eye protection when spreading aggregate.
Order Lucas Specialty Rock 3/8 in. Fire White™ marble roofing aggregate in 80 lb. bags today.
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