IBR is an abbreviation for Inverted Box Rib, an angular trapezoidal fluted profile sheet with a bold appearance which makes it both attractive and practical. Tufdek has an effective covering width of 686 mm designed for use as side cladding or roofing material in commercial, industrial and residential buildings. The deep broad flute design offers excellent drainage characteristics combined with optimum weight versus load/span capabilities. Tufdek can be factory cranked, curved and bullnosed to various radii depending on customer's requirements.

  • Category: Pierced Fix Profiles


Product Description and Features: 

  • IBR is an abbreviation for Inverted Box Rib, an angular trapezoidal fluted profile sheet with a bold appearance that makes it both attractive and practical. Since IBR was introduced to the South African market in 1958, it has become the most popular sheeting used in the construction of commercial and industrial buildings.
  • The general shape and appearance of the trapezoidal flutes ensure that IBR is totally acceptable for use as roof and wall cladding. The deep and broad flutes of the IBR type sheeting ensure excellent drainage characteristics.
  • IBR is designed to provide the most advantageous load/span characteristics consistent with economy.
  • IBR is rolled with stiffening ribs in the sheet which help to remove oil canning from the broadflute.
  • IBR can be factory cranked, curved and bullnosed to a wide range of radii.

Sample Specification:

Safintra 0,47mm thick, AZ 150 ZincAl® Tufdek IBR profiled roof sheeting, fixed to intermediate steel purlins at 1900mm centres and to ridge and eaves purlins at 1600mm centres, with 12x65mm metalfix Fixtite® or Safintra approved hex head self-drilling fasteners at every second crest, at intermediate purlins and at every crest at eave purlins. Side laps to be stitched at 500mm centres between purlins with a #14 x 22mm metal-fix stitching fastener, in accordance with manufacturers recommendations.

The sheeting shall be Tufdek IBR type profile as manufactured by Safintra. The profile shall be roll-formed with 5 trapezoidal ribs at 171mm, centres with a effective cover width of 686mm. The rib height shall be 36,5mm and shall be fixed in accordance with the manufacturer’s recommendations.





Purlin Spacing:

Purlin Spacing's are dependent on both downward loading and negative suction loading caused by wind. An engineer should be consulted to calculate your load (kN/m2) for your particular application.


Lengths and Roof Pitch: 

When using Tufdek IBR sheeting the recommended minimum pitch for roof slopes in excess of 15m is 7.5° and for slopes less than 15m is 5°. Tufdek IBR sheeting can be ordered in any length, subject to transport limitations, up to 13,2m. Longer lengths require special transport arrangements.

Fixing Guide: 


Tufdek IBR is pierce fixed to timber or steel supports. This means that fastener screws pass through the sheeting. Always drive the fasteners perpendicular to the sheeting, and in the center of the rib. It is recommended that side laps be stitched at 500mm centers. Its further recommended that every rib is fixed at the eaves, ridges and the apex of the roof. Side laps to be sealed using a suitable butyl product or neutral cure silicone.

Refer to the Fixtite Fastener section for fixing guidelines.


Download Data Sheet

Tufdek IBR Data Sheet.pdf