- 3M™ Roofing Granules are available in a variety of beautiful colors.
- Tough, dense, non-porous, weather and UV resistant, ceramic-coated rock.
- Includes proprietary DREW coating to reduce staining, color variability and improve adhesion.
- Available in Size 11, Size 14 and Size 18 grade.
- Sold in 1.1 and 2 ton bags, bulk truck and railcar.
- The 3M™ Blended Roofing Granules are manufactured in the USA.
These Grey Slate colored roofing granules are manufactured and blended in Little Rock, AR
Size 11 grade; sold in 1.1 ton bags