MR-24® Roof System
Consistent, weathertight performance under demanding
conditions.
 The
MR-24® roof system is specifically designed to
accommodate roof movement.
Roofs expand and contract with daily and seasonal
temperature changes. Unless your roof is designed as a
system to accommodate this movement, fasteners will work
loose on metal roofs and cracks, blisters and splits
will appear on built-up roofs.
The system is attached to the building's structure with
a special clip and tab assembly formed into the
double-lock seam. Because the tab can move within the
clip, the entire roof can expand and contract freely
without sacrificing structural integrity.
 Butler's
exclusive Pittsburgh double-lock standing seam
(illustrated in the animation) assures you of consistent
weathertight performance.
Independent surveys show that the MR-24 roof system is
the most specified standing seam roof on the market,
with over 2 billion square feet installed since its
introduction in 1969.
ENERGY SAVINGS
Because the MR-24 roof system is metal and moves freely
with the forces of expansion and contraction, additional
insulation thickness will not cause roof deterioration
as commonly happens with conventional built-up roofs.
Also, when metal roofs are installed, insulation is
often crushed at points where the roof is fastened to
the structural members. At these points, a thermal short
circuit is created. The MR-24 roof system offers special
thermal blocks to rectify this problem. A variety of
colors are available.
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