Residential Backfill
Lightweight, free-draining fill around foundation walls.
Enviro-Rock is a lightweight foam glass aggregate used as backfill around residential foundations, basement walls, and other below-grade structures. At approximately 200–240 kg/m³, it can replace heavier conventional granular fill while reducing loading against foundation walls and providing drainage and thermal performance within the same backfill layer.
Key Uses
- Backfill around basement and foundation walls
- Deep residential excavations
- Additions and other below-grade structures
- Drainage zones adjacent to foundations
- Insulating backfill around heated below-grade spaces
- Sites with weak or compressible soils
- Replacement for heavier conventional granular backfill
- Frost-sensitive below-grade applications
Overview
Residential backfill needs to manage water while limiting unnecessary loading against foundation and basement walls. Using conventional aggregate can add significant weight around below-grade structures, particularly where deeper backfill is required.
Enviro-Rock provides a lightweight, free-draining alternative with approximately 42% void space to support drainage through the backfill layer. Its design thermal value of approximately R-2 per inch also allows the same layer to contribute insulation and frost protection around below-grade portions of the building.
Residential Backfill
Lightweight, free-draining fill around foundation walls.
Enviro-Rock is a lightweight foam glass aggregate used as backfill around residential foundations, basement walls, and other below-grade structures. At approximately 200–240 kg/m³, it can replace heavier conventional granular fill while reducing loading against foundation walls and providing drainage and thermal performance within the same backfill layer.
Key Uses
- Backfill around basement and foundation walls
- Deep residential excavations
- Additions and other below-grade structures
- Drainage zones adjacent to foundations
- Insulating backfill around heated below-grade spaces
- Sites with weak or compressible soils
- Replacement for heavier conventional granular backfill
- Frost-sensitive below-grade applications
Overview
Residential backfill needs to manage water while limiting unnecessary loading against foundation and basement walls. Using conventional aggregate can add significant weight around below-grade structures, particularly where deeper backfill is required.
Enviro-Rock provides a lightweight, free-draining alternative with approximately 42% void space to support drainage through the backfill layer. Its design thermal value of approximately R-2 per inch also allows the same layer to contribute insulation and frost protection around below-grade portions of the building.
Key Performance Considerations
Reduced Backfill Loading
Low unit weight reduces the mass of granular backfill placed against foundation and basement walls compared with conventional aggregate.
Drainage & Permeability
Provides an open, free-draining backfill zone adjacent to foundation walls as part of the overall below-grade drainage design.
Thermal Insulation
Allows the granular backfill layer to contribute thermal resistance around basement walls and other heated below-grade spaces.
Key Performance Considerations
Reduced Backfill Loading
Low unit weight reduces the mass of granular backfill placed against foundation and basement walls compared with conventional aggregate.
Drainage & Permeability
Provides an open, free-draining backfill zone adjacent to foundation walls as part of the overall below-grade drainage design.
Thermal Insulation
Allows the granular backfill layer to contribute thermal resistance around basement walls and other heated below-grade spaces.
Bring Enviro-Rock to your project
Request the specs for your design, or reach out and we'll point you to the right details.