Magna-loc, System components – Metal Sales Magna-Loc 180 User Manual
Page 15
PML-15
MAGNA-LOC
© Metal Sales Manufacturing Corporation/ Subject to change without notice/ Effective Date 9/11
800.406.7387 (Corporate Office) • www.metalsales.us.com
d
esign
/ i
nsTallaTion
C
onsideraTions
(
ConT
)
Steel roofing panels are subject to dimensional changes after installation due to exposure to varying temperatures. The greatest
influence is solar energy. Steel roofing absorbs various amounts of heat depending upon color, finish, angle of exposure, and time
of exposure.
The relationship of ambient temperature to building structural temperature must be considered when designing a Magna-Loc roof
system. The floating clips for the Magna-Loc panels are designed for expansion and contraction of the panels in the longitudinal
direction. Lateral expansion and contraction is accommodated by the configuration of the panel cross section and causes negli-
gible panel movement.
When the total length of panel run exceeds the capability of the clips to accommodate the thermal movement, expansion joints
must be designed into the structure.
SYSTEM EXPANSION / CONTRACTION
The Magna-Loc roof system can be installed with components that allow the panels to either float independently or fix perma-
nently to the substructure. Choice of system will depend upon building design and regional temperature range
(from summer highs to winter lows).
SELECTION OF SYSTEM COMPONENTS
Magna-Loc Floating Clips- The floating clips allow the roof surface (panels) to move independently of the roof substructure to
allow for thermal expansion and contraction. These clips are designed with a vertical tab that slides along the base section of the
clip.
Magna-Loc Fixed Clips- Fixed clips may be used on panel runs of less than 20'-0", unless considerable thermal expansion or
contraction is a consideration. When utilizing a Fixed Utility Clip, a pancake headed fastner must be used.
MAGNA-LOC FIXED CLIP
MAGNA-LOC FLOATING CLIP**
Vertical tab
Base
The following chart should be used to determine proper fasteners required for clip installation on the selected applications.
(See Product General Information page PGI-12 for other fasteners available.)
* Length of Deck Screw will vary depending on the total thickness of the rigid insulation and metal (see page PGI-12).
** Based on UL-580. Subject to project loading, closer clip spacing may be required. Contact your local Metal Sales branch
representative for more information (see pages PGI-2 and 3).
2 FASTENERS
2 FASTENERS
2 FASTENERS
CLIP OVER RIGID
INSULATION /
METAL DECK
2 FASTENERS
2 FASTENERS
1
/
4"
-14 x 1
1
/
2
" SELF DRILLER N/W
1
/
4"
-14 x 1
1
/
2
" SELF DRILLER N/W
#10 X 1" PANCAKE HEAD WOOD
2 FASTENERS
NUMBER
REQUIRED
TYPE OF FASTENER
APPLICATION
INSTALLATION
REQUIREMENTS
24 GAUGE
24 GAUGE
**CLIP
SPACING
**5'-0" O.C.
**3'-0" O.C.
**5'-0" O.C.
STANDARD
#10 X 1" PANCAKE HEAD WOOD
22 GAUGE
**3'-0" O.C.
CLIPS
OVER PURLINS
(16 GA. MIN)
CLIPS OVER
5
/
8
" WOOD DECK
1
/
4
"-13 DECK SCREW*
24 GAUGE
**4'-0" O.C.
22 GAUGE
**4'-0" O.C.
1
/
4
"-13 DECK SCREW*
STANDARD
STANDARD
STANDARD
STANDARD
STANDARD
22 GAUGE
RAKE ZEE
2
1
/
8
" UTILITY
2
3
/
8
" LOW
3
3
/
8
" HIGH
SYSTEM COMPONENTS
SYSTEM
CLIP
EAVE PLATE
THERMAL BLOCK
INSULATION
UTILITY
LOW
HIGH
2
1
/
8
" UTILITY
(FIXED ONLY)
2
3
/
8
" LOW
(FLOATING OR FIXED)
3
3
/
8
" HIGH
(FLOATING)
3
/
8
" LOW
1
3
/
8
" HIGH
NONE REQUIRED
NONE REQUIRED
1"
1
/
2
" TO 4" BLANKET
4" TO 6" BLANKET
4" TO 6" BLANKET
NONE REQUIRED