Picture of soffit or eave box by J le Roux Ceilings

Soffit or Eave Boxing



Eaves are the edges of the roof which overhang the face of a wall and, normally, project beyond the side of a building. The eaves form an overhang to throw water clear of the walls In architecture, a soffit describes the underside of any construction element.

Some examples of soffits:

  • the underside of an arch or architrave,
  • the underside of a flight of stairs,
  • the underside of a projecting cornice, or side of chimney
  • the underside of a ceiling to fill the space above the kitchen cabinets, at the corner of the ceiling and wall,
  • the exposed undersurface of any exterior overhanging section of a roof eave.
  • a drop-down box used to mount a kitchen ventilation hood under a sloped or high ceiling.


Damage caused due to exposure to elements
Damage caused due to exposure to elements


Besides being much more aesthetically pleasing than an open eave, a soffit also serves a practical purpose. Boxing eaves prevent birds nesting in the eave and bats entering, through and under, the roof overhang. A main purpose of a soffit is also the reduction in excessive dust accumulation. When one boxes an external geyser it insulates it and thus provides a cost effective energy saving solution. Fascia boards protect wooden rafters from the elements causing rot,cracking and discoloration.




Picture of Nutec Cement Fascia
Nutec Fiber Cement Fascia
Sheet Metal Fascia
Sheet Metal Fascia

Eave boxing is usually done with Nutec fiber cement boards – known for their weather resistance. Between joints a bishop or H-strip is used. These are usually mounted on a wooden frame. A L-shape fascia board can be made up of materials like metal or Nutec fiber cement many of these prefabricated to standard sizes. Architectural plans may specify different materials. Feel free to Contact us if you need more information. When boxing a geyser, a geyser blanket or insulation can also be added. A grill can be installed that covers the venting opening on the bottom of the soffit and this is called a soffit vent. Fascias and Soffits can be constructed in a wide range of sizes anywhere from a couple of centimeters to few metres.


Soffits and eave boxing are used in a wide variety of applications. These  range from Domestic to Industrial applications and everything in between.

Do you Need Soffits or Eaves?

At J le Roux Ceilings we specialize in the installation of Ceilings, Drywall and Soffits. We are ready to help so feel free to call us if you are unsure about what option will best suit your needs. Call us or  alternatively fill in our online request form for a Free Quotation and we’ll get back to you.

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