
DURA-RIB
Robertson Dura-Rib
Robertson SSR (Standing Seam Roof)
Robertson Standing Seam roof system
From the deep winter snowdrifts of the north to the torrential rains of
the south, a Robertson roof system will perform superbly under the most challenging
weather conditions.
It is not enough to say Robertson's three roof
systems are weather tight. They are also light weight, energy efficient and virtually
maintenance free. Fabricated from high-strength steel, they are resistant to decay and
thermal shock. To resist steel's normal oxidation and deterioration, roof systems are
available painted, or with a long life coating which is warranted for up to 20 years
against rupture, structural failure, or perforation to normal atmospheric corrosion.
Choose the Dura-Rib roof system for function and economy. The Robertson SSR (Standing Seam Roof)
system offers superior weather tightness and architectural flexibility.
StarTherm II is designed for superior thermal efficiency. No matter which Robertson roof system selected, you have made
a sound investment.
Dura-Rib
A 36" wide panel with 1 1/8" high ribs on 12" centers. It is available in 24
and 26 gauge steel. The 80,000 pound per square inch yield enhances walkability,
resistance to hail damage and load carrying capacity.
Details about Dura-Rib
StarTherm II RP-1 and RP-2
These roof panels have a composite insulating core of urethane modified
isocyanurate foam between a 26 gauge embossed
exterior and planked, embossed 26 gauge interior skin. U-factors of .061 (R-
16.4) for RP- 1, and .047 (R-21.3) for RP-2 can be achieved, depending on panel thickness.
Isocyanurate helps reduce the cost of heating and cooling equipment and saves you money.
The snap-on cap and sealants at panel sidelaps yield a weather resistant roof membrane and
vapor barrier.
Robertson SSR (Standing Seam Roof)
A 24" wide panel with a standing rib which is
machine double lock seamed 2 7/8" above the drainage surface. The system's two piece
sliding clips connect the weathering surface to the structurals eliminating panel to
structural fastener penetrations, and allowing the weathering surface to move with
temperature changes, thereby resisting thermal shock.
High energy efficiency is achieved with concealed clip standoff design
which minimizes compression of the insulation. With 6 inches of fiberglass insulation an
R-value of 17.29 can be attained. The system's heavy 24 gauge steel materials with long life coating and
Underwriters Laboratories class 90 rating for wind uplift resistance reduces maintenance
costs.

