MR-24® Roof System
The world's finest roof system.
Whether you're tired of dealing with costly roof
repairs or you simply want to avoid them from
the outset, you'll find the ideal solution in the
MR-24™ roof system by Butler—the industry's
most specified standing-seam metal roof system.
Proprietary technologies have established the
MR-24 roof system as the recognized standard
in the industry. It acts like a monolithic steel
surface covering your entire building, providing
superior protection for the inventories, assets,
and lives inside.
More than 2 billion square feet of the MR-24
roof system have been installed since 1969,
and life cycles of 35+ years have been achieved.
It's a testament to the unmatched protection
it provides.
The MR-24 clip (below) allows the roof to expand
and contract with changing temperatures. This
mobility prevents stress at the clips, fasteners,
and panel splice that could otherwise make the
building vulnerable to leaks and wind damage.
The Pittsburgh Double-Lock Seam
Only the MR-24 roof system seams are
mechanically field-rolled 180 degrees to complete
a 360-degree Pittsburgh double-lock seam. Other
manufacturers simply crimp or snap the seams
into place, forming a loose, vulnerable seal.
Perfect Alignment
All roof panels and structural members
of the MR-24 roof system are factorypunched
to assure proper alignment and
weathertightness, as well as the accurate
installation of closures, roof accessories,
and trim.
Staggered Panel Splices
Locating panel splices at the same position
across the roof makes it almost impossible
to seal and protect against leaks. The MR-24
roof system eliminates this problem with
staggered panel splices. All splices are also
located over supporting steel to reinforce
vulnerable areas, as opposed to midair
splices common with other manufacturers.
Energy Savings
Because the MR-24 roof system is metal and
moves freely with the forces of expansion and
contraction, additional insulation thicknesses
will not cause roof deterioration as commonly
happens with conventional built-up roofs.
Wind Uplift Resista nce
The MR-24 roof system carries the highest UL
wind uplift rating (Class 90). It has also been
approved by FM Global as a Class 1 Panel roof,
which may help lower your insurance costs.
In addition, the MR-24 roof system is approved
for use under the strictest codes, including
Miami-Dade County, Florida.
25-Year Waranty
It stands to reason that the industry's best
roof also offers the industry's best warranty.
The MR-24 roof system is available with a
25-year warranty, not just against perforation
but weathertightness as well.
Ask your Butler Builder® for details.








