Box gutter

A box gutter, parallel gutter, or trough gutter is a rain gutter on a roof usually rectangular in shape; it may be lined with metal, asphalt, or roofing felt, and may be concealed behind a parapet or the eaves, or in a roof valley.

• File:Provision is made in the design of the gutter to have a rain flow to the outlet with a maximum slope of 1:200 and a minimum of 1:400.
• File:==Gallery Of Sketches==
• 
  A section through a box gutter at the intersection of the bottom of a sloping roof and a parapet wall.
• 
  A simpler box gutter arrangement at a parapet wall that give a bare minimum of compliance to the Building Code of Australia (BCA)
• 
  A boxed gutter at a valley.
• 
  A sketch of a now illegal gutter construction under the BCA. A design to be avoided!

External links

• An Illustrated glossary of roofs and roofing terms.