Roof Ballast
Roof ballast, consisting of crushed rock or gravel, is spread on a roof surface to secure the membrane, protect against wind uplift, and provide durability.
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Definition
Roof ballast is crushed rock or gravel spread on a roof surface to form its final surface.
Purpose
The purpose of roof ballast is to weigh down the roofing membrane, protecting it from wind uplift and mechanical damage while providing a durable and aesthetically pleasing surface.
Examples of Use
- Flat or low-slope commercial roofs often use gravel as ballast to secure the roofing membrane.
- Green roofs incorporate ballast materials to support vegetation and manage stormwater.
- Industrial buildings use ballast to protect roofing systems and extend their lifespan.
Related Terms
- Roofing Membrane: A continuous layer used to waterproof a roof.
- Built-Up Roof: A roofing system made of multiple layers of roofing felt and bitumen.
- Green Roof: A roof covered with vegetation to provide environmental benefits.
Notes
Roof ballast must be evenly distributed and appropriately sized to ensure it effectively secures the roofing membrane and provides adequate protection.
Related Terms
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