Drain Boxes (Inspection Chambers) 

Drain Boxes, also known as Inspection Chambers, are specially designed for use in green roofing systems to provide accessible, protected drain points within vegetative assemblies. These boxes surround roof drains, allowing for inspection, debris filtration, and maintenance without disturbing the surrounding growing media.

Fabricated from .063″ mill finish aluminum, each unit features perforated or slotted walls to allow water flow while preventing soil and plant material from clogging the drain. The removable top cover ensures easy access to the drain below while blending into the rooftop environment.

Key Features:

• Made from .063″ mill finish aluminum for durability and corrosion resistance

• Standard sizes designed to fit most roof drains; custom sizing available

• 3/8″ x 2″ perforated or slotted walls allow effective drainage while retaining soil

• Removable lid for easy inspection and maintenance access

Applications:

• Green roofs with built-up or modular growing media

• Surrounding primary or overflow drain locations

• Protecting and maintaining roof drain access without disturbing vegetation

• Used in conjunction with root barriers, filter fabric, and drainage layers

These boxes provide essential protection and accessibility for roof drains, helping ensure your green roofing system performs reliably for years to come.