Roofing Aggregates

Roofing aggregates are specialized crushed stone materials used in roofing systems, particularly for built-up and flat roofs. They serve multiple purposes: protecting the roof membrane from UV damage, adding fire resistance, and providing weight to keep the roofing system in place.

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Features & Benefits

• Fire resistance – Aggregates like crushed stone or gravel placed on built‑up or modified bitumen roofs help protect roofing membranes from fire and UV exposure.
• Ballast stability – Heavy aggregate helps weigh down roofing materials, resisting wind uplift and reducing risk of blow‑offs.
• Improved durability and roof protection – Shields underlying roofing layers from physical damage (hail, foot traffic, debris) and extends roof lifespan.
• Low maintenance – Once installed, roofing aggregate requires minimal upkeep compared with coatings or membranes that need periodic resealing.

Note: All products are sold by weight (bulk & palletized) unless otherwise noted.

Roofing Aggregate Types

#2 ROOF BALLAST

1″ x 3″ Delaware Blend

#3 ROOF BALLAST

3/4″ x 2″ Pearl Pebble

#4 ROOF BALLAST

1-1/4″ Delaware Blend

3/8″ DELAWARE BLEND

ROOF SPAR

3/8″ Marble Chip

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